Performance Metrics Overview

1. Performance Metrics Overview

2. 2
Performance Data
> There are 3 main sources of performance data in Nortel’s CDMA
equipment
• MTX
• BSS (BSC + BTS)
• PDSN
> Each of these are unique and comes under different format and
performance data are configured, collected, stored, and
retrieved separately on each system
> The focus for RF engineering is on the MTX and BSS side

3. 3
Performance Data - Overview
> BSS data can provide
• XCEM usage – Per sector Traffic/Erlang
• Paging/Access performance (normal + border repage)
• Handover performance
• Power measurement (Tx/Rx)
• Data performance
> MTX data can provide
• Performance (call setup and drop call)
• Total call attempt (new and hard handoff)
• SMS statistics
• MCTA
• Authentication
• Trunk utilisation

4. 4
 BSC – timestamp
 CPDSSubsystem – timestamp
 CSVSSubsystem – timestamp
 MCBTSSubsystem – timestamp
 CompactMCBTSSubsystem – timestamp
 SBSCSubsystem – timestamp
where timestamp is yyyymmddhhmmss
BSS Performance OM File Naming Conventions

5. 5
BSS Data Format
> File will commence with date/timestamp
> Data line format is
|DT|Seq|Value|
Where:
DT = Data Type (5 = 16 bit word, 7 = 32 bit word)
Seq = Sequence Number
Value = Value for this half hour

6. 6
BTS Performance Data
> The MO’s of interest for Radio engineers are :
• AdvancedFA MO,
• PowerManagement MO, and
• AdvancedSector MO.
> Every half-hour, all BTSs report the following information:
• Handoff state information
• Transmit power information
• Received power information
• Call/Handoff blocking reasons
> From these, can also deduce:
• Total carried traffic
• Available RF capacity
• Transmitter faults
• Receiver faults

7. 7
AdvancedFA MO
Contain Carrier specific information mainly Channel element
availability and usage
 NumOfTCAvailable
Total number of channel elements available for traffic across all
channel cards after overhead channels have been subtracted
 TCEUtilMaximum
The peak number of channel elements in use simultaneously
during this half hour

8. 8
#LOGNUM|2|OPERATIONAL
|O%:CCLN-1-CBS1:CELLS-1-CELLS1:MCBTS-1-MC800BTS136:MCBTSSUBSYSTEM-1-
MCBTSSUBSYSTEM1:ROOT-1-ROOT1:BTSCALLPROCESSING-1-
BTSCALLPROCESSING1:ADVANCEDFA-1-ADVANCEDFA1
|33.2.0.150.1.1|33.2.0.150.1.1|0x3|0|0|1
|0|14
|5|23|43
|5|24|3
|7|72|250
|7|74|0
|7|75|0
|7|76|1
|7|77|124
|7|79|0
|7|80|0
|7|81|1
|7|88|1
|7|89|1
|7|90|1
|7|91|0
#END
Peak simultaneous CCEM in use, if deployed
Reverse direction XCEM OMs
Total available CCEM, if deployed
Forward direction XCEM OMs
Actual simultaneous XCEM resources used
AdvancedFA MO

9. 9
Advanced Sector MO
Contain :
• Origination/Termination/Soft Handoff Blocking Reasons/Counts
• Non-blocked Origination/Termination/Soft Handoff Counts
• Digital Power Averages
• Paging and Access channel utilisation
• Walsh Code utilisation
Units for Power usage is Digital gain squared
Where digital gain of a particular channel element is a value from 0 to 254
representing the voltage at the output of the element
Example Uses:
Calculate percentages of blocks due to different reasons
In conjunction with AdvancedFA MO data, estimate available forward
air link capacity

10. 10
Advanced Sector MO: Example Log
#LOGNUM|9655
|O%:CCLN-1-C
ROOT1:BTSCAL
ADVANCEDSECT
|706.2.0.158
|5|59|0
|5|60|0
|5|61|0
|5|62|0
|5|63|0
|5|64|0
|5|65|0
|5|66|0
|5|67|0
|5|68|0
#END

11. 11
Power Information
 MO Name: PowerManagement
 Allow engineers to determine whether sector went into software power
limiting
 Information include
RF Transmit Power Information
RF Received Power Information
Both Max and Average are captured
 In conjunction with AdvancedFA MO data, estimate available forward
and reverse air-link capacity on a per sector carrier level (CE + RF)
 Units:
 Receive power is 16*dBfW
 conversion to dBm = (value/16) – 120
 Transmit power is 16*dBm
 Conversion to dBm = (value/16)

12. 12
PowerManagement MO
#LOGNUM|96
|O%:CCLN-1
ROOT1:BTSC
ADVANCEDSE
|710.2.0.1
|5|62|133
|5|63|131
|5|59|548
|5|64|240
|5|65|237
|5|60|556
|5|67|0
#END

13. 13
MTX Performance Data
> MTX OMs are organized and reported on a per-system,
per-sector, or per-carrier-sector basis.
> MTX OMs are divided into two categories: non-CDMA
specific OMs and CDMA specific OMs
> Non CDMA specific would include such things are MTX
memory and link utilizations, VLR and HLR transactions
> MTX specifically for CDMA-related events and normally
labelled as CAUxxx

14. 14
How to read an MTX OM table

15. 15
Voice Metric for a 30 minute collection period
Call Attempts = Summed across all sector - carriers
CAUCPSCT. (CAUPGRES + CAUOATTS + CAUHATTS)
+ CAUSCT3V. (CAUPGRES + CAUOATTS + CAUHATTS)
+ CAUSCT2.(WPSRETRY + WPSTRTRY) +
CAUST3V2.(WPSRETRY + WPSTRTRY) –
CAUXTFRQ.(MCTPRSO + MCTPRST) –
CAUXTF3V.(MCTPRSO + MCTPRST)
Data Metric for a 30 minute collection period
Data Call Attempts = Summed across all sector - carriers
CAUSCT3D. (CAUPGRES + CAUOATTS + CAUHATTS) –
CAUXTF3D.(MCTPRSO + MCTPRST)
MTX Performance Data

16. 16
Drop Call Rate all scenarios across all sector - carriers
(Σ (CAUDROPR + CAUDROPN) for all sectors/ Σ (CAUOSUCC +
CAUTSUCC + CAUHSUCC) for all sectors) x 100
RF only Drop Call Rate across all sector
( Σ CAUDROPR for all sectors / Σ (CAUOSUCC + CAUTSUCC +
CAUHSUCC) for all sectors) x 100
Network only Drop Call Rate across all sector which include issues
such as “RLM locked, TCE locked, Trunk problem or a Selector
problem
( Σ CAUDROPN for all sectors / Σ (CAUOSUCC + CAUTSUCC +
CAUHSUCC) for all sectors) x 100
MTX Drop Call Rate

17. 17
Successful call attempt across all sector - carriers
(CAUOSUCC + CAUTSUCC + CAUHSUCC) for all sectors
Unsuccessful Call Attempt across all sector
(CAUOBLKS + CAUTBLKS + CAUHBLKS + CAUORLS + CAUTRLS + CAUHRLS +
CAUORODR + CAUERLFL + CAUHRLFL + MISCFLT + NORFSEFL + NRFSEFHH +
NWKFLBS - (WQTOUT + WQOVFL + WINVALDQ) for all sectors- MCTPRSO - MCTPRST
+ MCTPRRO + MCTPRRT for all frequencies for all sectors
Overall RF Access failures
This metric provides the combined RF access failure for originations & terminations on the
common channels and Hard Handoffs.
(Σ (CAUERLFL + CAUHRLFL) for all sectors / “Total Calls Attempted”) x 100
> NORFS - Non-RF resource failure during origination or termination, NRFSEFHH Non-RF
resource failure during Hard Handoff
> MCTPRST- MCTa Paging channel Redirection Successful for call Termination. Pegged,
along with MCTPGRES and CAUPGRES, when the mobile re-send a page response after
the mobile was redirected to the alternate band.
> WQTOUT - WPS Queue failure due to queue TimeOUT, Wireless Priority Service
Operational Measurements, Winvaldq - WPS total INVALiD originations while Queued.
> NWKFLBS - NetWork rp session FaiLure Before Service connect completion is pegged
when RP session setup failures for packet data calls before service connect completion
> MISCFLT - MISCellaneous Faults
MTX Access Failure Rate

18. 18
Call Attempt Formulas
Traffic Type Call Attempt Formula
Packet Data = CAUSCT3D.(CAUPGRES + CAUOATTS + CAUHATTS)
Total SMS
= CAUDATSC.(SMOCSRAC + SMOATTAC + SMOATBTC +
SMSPGRES + SMSPRRES + SMSDVCAT)
SMS Over Traffic Channel = CAUDATSC.(SMOCSRAC + SMSORATS)
Total Voice (2G + 3G)
= CAUCPSCT.(CAUPGRES + CAUOATTS + CAUHATTS) +
CAUSCT3V.(CAUPGRES + CAUOATTS + CAUHATTS) -
CAUXTFRQ.(MCTPRSO + MCTPRST) -
CAUXTF3V.(MCTPRSO + MCTPRST) +
CAUSCT2.WPSRETRY + CAUST3V2.WPSRETRY
The MCTPRSO and MCTPRST OMs are subtracted in the above formula to account
for the origination or termination attempts that get redirected by MCTA to the alternate
CDMA band resulting in MCTORIGS or MCTPGRES OM being pegged twice in those
events – not really applicable for Bakrie

19. 19
SMS Attempts Calculation
Termination - Over Busy Traffic Channel
= 100 * CAUDATSC.SMSDVCAT / CAUDATSC.(SMSPGRES
+ SMSPRRES + SMSDVCAT)
Termination - Over Idle Traffic Channel
= 100 * CAUDATSC.SMSORATS / CAUDATSC.(SMSPGRES
+ SMSPRRES + SMSDVCAT)
Origination - Over Idle Traffic Channel
= 100 * CAUDATSC.SMOCSRAC /
CAUDATSC.(SMOATTAC + SMOCSRAC + SMOATBTC)
Termination - Over Paging Channel
= 100 * CAUDATSC.SMSTATPG / CAUDATSC.(SMSPGRES
+ SMSPRRES + SMSDVCAT)
Origination - Over Access Channel
= 100 * CAUDATSC.SMOATTAC / CAUDATSC.(SMOATTAC
+ SMOCSRAC + SMOATBTC)
Origination - Over Busy Traffic Channel
= 100 * CAUDATSC.SMOATBTC / CAUDATSC.(SMOATTAC
+ SMOCSRAC + SMOATBTC)
Metric Formula

20. 20
SMS Origination and Termination
Failure Metrics
Metric Formula
Origination - Access Channel Failure Rate = 100 * CAUDATSC.SMOFAIAC / CAUDATSC.SMOATTAC
Origination - Radio Link Setup Failure Rate - Traffic Channel = 100 * CAUDATSC.SMOCSFTC / CAUDATSC.SMOCSRAC
Origination - Idle Traffic Channel Delivery Failure Rate = 100 * CAUDATSC.SMOFAITC / CAUDATSC.SMOATITC
Origination - Data Burst Failure Rate = 100 * CAUDATSY.SMODBRTO / CAUDATSC.SMOCSSTC
Origination - Idle Mobile Failure Rate
= 100 * (CAUDATSC.SMOFAIAC + CAUDATSC.SMOCSFTC +
CAUDATSC.SMSORCFL + CAUDATSC.SMOFAITC +
CAUDATSY.SMODBRTO) / (CAUDATSC.SMOATTAC +
CAUDATSC.SMOCSRAC)
Origination - In-Call Mobile Failure Rate = 100 * CAUDATSC.SMOFABTC / CAUDATSC.SMOATBTC
Termination - Paging Channel Failure Rate = 100 * CAUDATSC.SMSTFLPG / CAUDATSC.SMSTATPG
Termination - Radio Link Setup Failure Rate - Traffic Channel = 100 * CAUDATSC.SMSTMCFL / CAUDATSC.SMSORATS
Termination - In-Call Mobile Failure Rate = 100 * CAUDATSC.SMSDVCFL / CAUDATSC.SMSDVCAT
Termination - Idle Traffic Channel Delivery Failure Rate = 100 * CAUDATSC.SMSTFLTC / CAUDATS2.SMSTATTC
Termination - Idle Mobile Failure Rate
= 100 * (CAUDATSC.SMSTFLPG + CAUDATSC.SMSTMCFL +
CAUDATSC.SMSTFLTC) / (CAUDATSC.SMSPGRES +
CAUDATSC.SMSPRRES)
OM definitions and Metric can be found in NTP 411-2133-525