Volte Drop Documentation_v1

VoLTE Drop Documentation

Contents 1) DSP restart 2) HOSR Issue due to X2 link Fluctuation 3) External Interference Resolution 4) Poor CQI/Pilot Pollution 5) Overshooting Cell 6) DL_Coverage_comment 7) UL_Coverage_comment 8) Neighbour Outage Comment 9) Neighbour Sleeping Cell 10) PCI Conflict/CPRI Fail 11) Self Outage 12) Backhaul Fluctuation 13) Software Issue 14) HOSR Issue 15) DCR due to capacity issue 16) Uama Card issue 17) Hard Reset issue 18) Tilt Mismatch 19) IntraEnb_Traffic_Reduction issue 20) IntraEnb_SleepingCell 21) L9CA Card Issue 22) A2 Threshold Parameter Optimization-VoLTE 23) Swap Check Combine 24) VoLTE_DCR_Analysis_aging 25) P0_NOMINAL_PUSCH parameter Optimization 26) 316 CC> 0 && 34C== 0

Action Codes 1) DSP Restart

1.1)

Detection Mechanism

IF

RAN_VoLTE_Drop_Rate_ %_WDH> 20%

VoLTE Drop Rate=RAN_VoLTE Drop Rate_Nom/RAN_VoLTE Drop Rate_Denom Calculated at Worst VoLTE Drop Hour

RAN_VoLTE Drop Rate_Denom_WDH Ratio of 343 cc and 301 cc multiplication by 100.

RLF_To_Reconfiguration Failure %< 5%

([0x0343] Ecc_RadioLinkFailure_WDH/[0x0301] EccTmout_WDH)*100. Calculated at Worst VoLTE Drop Hour

DSP Restart

Notes: WDH (Worst VoLTE Drop Hour): Hour for highest VoLTE Drop absolute number.

1.2)

Resolution Mechanism Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody Folder for DSP restart. To raise service affecting PE for whole scope via HPSM for DSP restart

Band Specific DSP Restart

1.3)

Case Study

1.3.1) MH-MH-REM-05-A, ENB_4473-cNum15

VoLTE Drop Rate at worst VoLTE Drop Hour

DSP Reset

343 CC to 301 CC ratio multiplication by 100, calculated at Worst VoLTE Drop Hour

1.3.2)

MH-MH-REM-05-A, ENB_1068-cNum24

VoLTE Drop Rate at worst VoLTE Drop Hour

DSP Reset

343 CC to 301 CC ratio multiplication by 100, calculated at Worst VoLTE Drop Hour

1)

HOSR issue due to X2 link Fluctuation

2.1) Detection Mechanism

IF Calculate at Worst VoLTE Drop Hour

Volte_HOSR%_WDH< 95%

(Volte_HOSR_Nom/Volte_HOSR_Denom)*100 VoLTE_HOSR_Nom='VoLTE_IntraEnbSucc'+'VoLTE_Int erX2OutSucc'+'VoLTE_InterS1OutSucc’ VoLTE_HOSR_Denom=(('VoLTE_IntraEnbAtt'+'VoLTE_I nterX2OutAtt'+'VoLTE_InterS1OutAtt’

InterS1OutAtt.RADIO_R EASON> 0 Calculate at Worst VoLTE Drop Hour

HOSR issue due to X2 link Fluctuation

2.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for HOSR issue due to X2 link Fluctuation To check for X2 link disable between relations or frequent fluctuation of X2 link To raise TT for NOC FM for enabling the X2 link.

2.3) Case Study

2.3.1)

3) External Interference Resolution 3.1) Detection Mechanism

IF

RAN_Avg_Interference>110 for >=4 Quarter Hour

PreambleSent_7+8+9_W DH>100

RAN_Avg_Interference=Interference PowerTot/InterferencePowerCnt

Sum of RACH preambles sent for 7,8 & 9 Calculated for worst VoLTE Drop Hour

PreambleSent_7+8+9_% _WDH> 5%

% for Sum of RACH preambles sent for 7,8 & 9 form Total Preambles sent. Calculated for worst VoLTE Drop Hour

% Sample ULVoLTESinrDistPostCo mBin less than equal 5_WDH> 5%

If % for Sum of ULVoLTESinrDistPostComBin for less than 5 from total bin samples greater than 5. Calculated at Worst Drop Hour

Interference Cell

3.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for Interference cell. To Correlate with Spectrum Analyser option in Configuration Tab in LSMR for Interference greater than -110 for any specific frequency. To find the Source of External Interference with the help of Anritsu Spectrum Analyser tool. To check if cell is TDD having Internal interference due to Special Subframe configuration change.

3.3) Case Study

3.3.1)

2)

Poor CQI/Pilot Pollution

4.1) Detection Mechanism

IF

DLVoLTECQI_Max_WDH> 7

Max CQI of DLVoLTECQIAvg.DL Layer2.codeword1 and DLVoLTECQIAvg.DL Layer1.codeword0 calculated at Worst VoLTE Drop Hour

BLER_WDH< 1 BLER calculate at Worst VoLTE Drop Hour

QPSK%> 30% QPSK Sample is greater than 30 % calculated at Worst VoLTE Drop Hour

Poor CQI/Pilot Pollution

4.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody Folder for Poor CQI/Pilot pollution. To check for Physical Optimization RET/MT mismatch/change required, Azimuth Change, Antenna Height Modification To check if any VSWR issue, High no of Ping Pong Handover- drill down the cell into LTEToLTE Neighbour for ping pong HO,Execution failure, and MRO Failures.

4.3) Case Study

4.3.1)

5) Overshooting Cell

5.1) Detection Mechanism

IF

CellUnavail_Time_Dn_NB R_Worst_Volte==0

% TA Samples > 2KM_BBH> 30%

Overshooting Cell

Checking the availability of all the NBRs, should not be down.

If TA samples greater than 2 km calculated at BBH greater than 30 %. Cell qualifies for Overshooting cell.

QPSK Sample is greater than 30 % calculated at Worst VoLTE Drop Hour

5.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for Overshooting Cell To check for Physical Optimization RET/MT mismatch/change required, Azimuth Change, Antenna Height Modification. Uneven Terrain issue. To check if any VSWR issue, High no of Ping Pong Handover- drill down the cell into LTEToLTE Neighbour for ping pong HO,Execution failure, and MRO Failures.

5.3) Case Study

5.3.1)

3) DL_Coverage_comment

6.1) Detection Mechanism

IF

CellUnavail_Time_Dn_NB R_Worst_Volte==0

TA Samples > 2KM_BBH == 0

DLVoLTECQI_Max_WDH <7

Checking the availability of all the NBRs, should not be down.

“TA Samples > 2KM_BBH” Kpi is calculated at BBH, if < 30% for TDD, and < 40% 1800 FDD and < 50% for 850 FDD means that TA Samples are nearby only

Max CQI of DLVoLTECQIAvg.DL Layer2.codeword1 and DLVoLTECQIAvg.DL Layer1.codeword0 calculated at Worst VoLTE Drop Hour

BLER_WDH> 1

BLER calculate at Worst VoLTE Drop Hour

DL Coverage Issue Cell

6.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for DL Coverage Cell To check for Physical Optimization RET/MT mismatch/change required, Azimuth Change, Antenna Height Modification. Uneven Terrain issue. VSWR need to be checked for all RRH Ports.ALDM communication fail alarm

6.3) Case Study

6.3.1)

7) UL_Coverage_comment

7.1) Detection Mechanism

IF

CellUnavail_Time_Dn_NB R_Worst_Volte==0

TA Samples > 2KM_BBH == 0

PreambleSent_7+8+9_W DH>100

Checking the availability of all the NBRs, should not be down.

> 2KM_BBH” Kpisent is for 7,8 %“TA forSamples Sum of RACH preambles at BBH, if < 30% for TDD, and &calculated 9 form Total Preambles sent. < 40% 1800 FDD and < 50% for 850 FDD means that Samples areDrop nearby only Calculated forTAworst VoLTE Hour

Sum of RACH preambles sent for 7,8 & 9 Calculated for worst VoLTE Drop Hour

PreambleSent_7+8+9_% _WDH> 5%

% Sample ULVoLTESinrDistPostCo mBin less than equal 5_WDH> 5%

If % for Sum of ULVoLTESinrDistPostComBin for less than 5 from total bin samples greater than 5. Calculated at Worst Drop Hour

UL Coverage Issue Cell

7.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for UL Coverage issue cell. To check for UL RSSI for the particular cell Power Ramp Parameter Optimization.

7.3) Case Study

8) Neighbour outage comment

8.1) Detection Mechanism IF

(If(((('CellUnavailableTimeDown'==0.0)And(( ('DedicatedPreambles'+'RandomlySelectedP reamblesHigh')+'RandomlySelectedPreambl esLow')>500.0))And('AirMacDLByte'==0.0)), 1.0, 0.0)== 0)

Sleeping Cell Condition is checked at Worst VoLTE Drop Hour for Neighbours For cell to be NBR Outage, it should not be sleeping cell.

CellUnavail_Time_Dn_NB R_Worst_Volte> 0

((('UL_Coverage_WDH'>0.0)Or('D L_Coverage_WDH1'>0.0)Or('%TA Samples>2KM>30_new'>0.0))

Checking the availability of all the NBRs.

If there is NBR Outage, we must be having issue with UL Coverage OR DL Coverage OR TA samples > 2 km are more than 30 % for Source Cell.

Neighbour Outage

8.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for Neighbour Outage. To check for availability issue alarms in LSMR in CLI in Configuration TAB OR in Event History in Fault Management.

8.3) Case Study

9) NBR_Sleeping Cell_comment

9.1) Detection Mechanism

IF

(If(((('CellUnavailableTimeDown'==0.0)And(( ('DedicatedPreambles'+'RandomlySelectedP reamblesHigh')+'RandomlySelectedPreambl esLow')>500.0))And('AirMacDLByte'==0.0)), 1.0, 0.0)== 1)

Sleeping Cell Condition is checked at Worst VoLTE Drop Hour for Neighbours 3 conditions are checked Site should not be down Sum of all the RACH preambles > 500, & DL Data Volume==0

((('UL_Coverage_WDH'>0.0)Or('D L_Coverage_WDH1'>0.0)Or('%TA Samples>2KM>30_new'>0.0))

If NBR is sleeping Cell, we must be having issue with UL Coverage OR DL Coverage OR TA samples > 2 km are more than 30 % for Source Cell.

Neighbour Sleeping Cell

9.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for Neighbour Sleeping Cell To check for L9CA card Reset Or Jack In or Jack Out EARFCN Mismatch Clock Parameter mismatch for 2300 Band RRH Reset/Faulty

9.3) Case Study

10) PCI conflict/CPRI fail

10.1) Detection Mechanism

IF

[0x034D]Ecc_RcvCellReleaseIndFromEcmb> 0

34D CC calculated at Worst VoLTE Drop Hour, if greater than 0

PCI conflict/CPRI fail

10.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder. To check for Hardware Alarm in Cell/Site-CPRI Fail or PCI conflict.

10.3) Case Study

11) Self outage

11.1) Detection Mechanism

IF

‘[0x034D]Ecc_RcvCellReleaseIndFrom Ecmb’== 0

‘[0x034C]Ecc_S1SctpOutOfService’==0

Calculated at worst VoLTE Drop Hour

Calculated at worst VoLTE Drop Hour

‘CellUnavailableTimeDown’> 0

Calculated at worst VoLTE Drop Hour

Self Outage

11.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder. To check for current alarm and frequent alarm coming from LSMR->Configuration->CLI tab.

11.3) Case Study

12) Backhaul Fluctuation

12.1) Detection Mechanism

IF

[0x034C]Ecc_S1SctpOutOfService> 0

Backhaul Fluctuation

12.2) Resolution Mechanism

Calculated at worst VoLTE Drop Hour

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder. To Ping end to end from ENB to CSS to SGW/MME To check for Latency end to end and IP issue (Router Configuration Mismatch) To check for Backhaul Type- MW or Fibre

12.3) Case Study

13) Software Issue

13.1) Detection Mechanism

IF

[0x0350]Ecc_DspAuditRlcMacCallRele ase> 0

Calculated at worst VoLTE Drop Hour

Software Issue

13.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder. To check for Software Version/Firmware mismatch To Raise PE for Software/Firmware check via RJIL Configuration Team for Software/Firmware Correction.

13.3) Case Study

14) HOSR Issue

14.1) Detection Mechanism

IF

Sleeping Cell_NBR_WDH==0

Pls go to S.NO 9 for NBR Sleeping Cell

Volte_HOSR%_WDH< 95% Calculate at Worst VoLTE Drop Hour (Volte_HOSR_Nom/Volte_HOSR_Denom)* 100

HOSR Issue

VoLTE_HOSR_Nom='VoLTE_IntraEnbSucc' +'VoLTE_InterX2OutSucc'+'VoLTE_InterS1 OutSucc’ VoLTE_HOSR_Denom=(('VoLTE_IntraEnbA tt'+'VoLTE_InterX2OutAtt'+'VoLTE_InterS1 OutAtt’

14.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder. To Check for Dedicated Preambles Assign Fail To Check for failures in Intra HO OR X2 HO OR S1 HO, and for Counter bifurcation to check Failures in preparation or Execution.

14.3) Case Study

15) DCR due to Capacity Issue

15.1) Detection Mechanism

IF

DL_Coverage_WDH1==0

RAN_CQI_QPSK_PERCENTAGE> 30%

Sum of CAC_WDH counters> 1

DCR due to capacity issue

15.2 ) Resolution Mechanism

There should be no DL Coverage Issue. Pls go to S.No 6 for DL Coverage description

Calculate at Worst VoLTE Drop Hour CQI Samples is greater than 30% for QPSK

Its is Sum of 367 CC, 20C CC, and HO blocking calculated at Worst VoLTE drop Hour 'IntraEnbPrepFail_CpQosCacFail.RADIO_R EASON'+'IntraEnbPrepFail_CpCapaCacFail. RADIO_REASON'+'IntraEnbPrepFail_CpBh CacFail.RADIO_REASON'+'InterX2InPrepFa il_CpCapaCacFail.RADIO_REASON'+'InterX 2InPrepFail_CpBhCacFail.RADIO_REASON' +'InterX2InPrepFail_CpQosCacFail.RADIO_ REASON'+'InterS1InPrep_FailCpBhCacFail. RADIO_REASON'+'InterS1InPrep_FailCpCa paCacFail.RADIO_REASON'+'InterS1InPrep _FailCpQosCacFail.RADIO_REASON'+'Conn Release_CpBhCacFail'+'ConnRelease_CpC apaCacFail'+'ConnRelease_CpQosCacFail'+ '[0x0371]Rrm_SrRscFail'

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for DCR due to Capacity issue. To check for idle mode parameter setting change, CIO change for connected mode. Multi carrier Parameter setting change. New Site/Capacity Solution

15.3) Case Study

16) Uama Card Issue

16.1) Detection Mechanism

IF

( 301 CC(Today)- 301 CC(Today-7))*100/(301 CC(Today-7))> 30 %

Condition for 301 CC, will be checked for all the IntraCell Relations Purpose is increase in 301 CC by 30% from previous week for at least 7 Intracell relations

E-RAB Connection Setup Success Rate %< 95 %

SumErabEstabInitAttNbr> 500

[0x0367]Rrm_MaxCa llCountOver== 0

UAMA RESET/REPLACE

Initial ERAB Attempt> 500

RRC CAC Failure equal to Zero

16.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for Uama Card Replace/Jack In Jack Out/Uama card Hang.

16.3) Case Study

17) Hard Reset Issue

17.1) Detection Mechanism

IF

( RRC Failures/RRC Attempt)> 50 %

( 300 CC(Today)- 300 CC(Today-7))*100/(300 CC(Today-7))> 50 %

( 300 CC(Today)- 300 CC(Today-14))*100/(300 CC(Today-14))> 50 %

Hard Reset issue

Purpose is increase in 300 CC by 50% from previous week same day.

Purpose is increase in 300 CC by 50% from previous 2nd week same day

17.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template in everybody folder for Hard Reset Hard Reset, DSP Reset

17.3) Case Study

18)

Tilt Mismatch

18.1) Detection Mechanism (2300-1800)

IF

Alpha

Beta

VoLTE Attempt_2300> 100

VoLTE Attempt_2300> 100

Gamma

VoLTE Attempt_2300> 100

(VoLTE Attempt_2300-VoLTE Attempt_1800)*100/VoLTE Attempt_2300< 100

(VoLTE Attempt_2300-VoLTE Attempt_1800)*100/VoLTE Attempt_2300< 100

(VoLTE Attempt_2300-VoLTE Attempt_1800)*100/VoLTE Attempt_2300< 100

(VoLTE Attempt_2300VoLTE Attempt_1800)*100/VoLTE Attempt_2300>= 60

(VoLTE Attempt_2300VoLTE Attempt_1800)*100/VoLTE Attempt_2300>= 60

(VoLTE Attempt_2300VoLTE Attempt_1800)*100/VoLTE Attempt_2300>= 60

Tilt Mismatch (2300-1800)-Alpha

Tilt Mismatch (2300-1800)-Beta

Tilt Mismatch (23001800)-Gamma

18.2) Detection Mechanism (2300-850)

IF

Alpha

Beta

VoLTE Attempt_2300> 100

VoLTE Attempt_2300> 100

Gamma

VoLTE Attempt_2300> 100

(VoLTE Attempt_2300-VoLTE Attempt_850)*100/VoLTE Attempt_2300< 100

(VoLTE Attempt_2300-VoLTE Attempt_850)*100/VoLTE Attempt_2300< 100

(VoLTE Attempt_2300-VoLTE Attempt_850)*100/VoLTE Attempt_2300< 100

(VoLTE Attempt_2300VoLTE Attempt_850)*100/VoLTE Attempt_2300>= 60

(VoLTE Attempt_2300VoLTE Attempt_850)*100/VoLTE Attempt_2300>= 60

(VoLTE Attempt_2300VoLTE Attempt_850)*100/VoLTE Attempt_2300>= 60

Tilt Mismatch (2300-850)-Alpha

Tilt Mismatch (2300-850)-Beta

Tilt Mismatch (2300850)-Gamma

18.3) Detection Mechanism (1800-850)

IF

Alpha

Beta

VoLTE Attempt_1800> 100

VoLTE Attempt_1800> 100

Gamma

VoLTE Attempt_1800> 100

(VoLTE Attempt_1800-VoLTE Attempt_850)*100/VoLTE Attempt_1800< 100

(VoLTE Attempt_1800-VoLTE Attempt_850)*100/VoLTE Attempt_1800< 100

(VoLTE Attempt_1800-VoLTE Attempt_850)*100/VoLTE Attempt_1800< 100

(VoLTE Attempt_1800-VoLTE Attempt_850)*100/VoLTE Attempt_1800>= 60

(VoLTE Attempt_1800-VoLTE Attempt_850)*100/VoLTE Attempt_1800>= 60

(VoLTE Attempt_1800VoLTE Attempt_850)*100/VoLTE Attempt_1800>= 60

Tilt Mismatch (1800-850)-Alpha

18.4) Resolution Mechanism

Tilt Mismatch (1800-850)-Beta

Tilt Mismatch (1800850)-Gamma

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” Template in everybody folder for Tilt Mismatch between 2300-1800, 2300-850, and 1800-850 for all sectors. All the ET changed will be done form JCP via Work Order.

18.5) Case Study

19) IntraEnb_Traffic_Reduction issue

19.1) Detection Mechanism

IF

NBR_Traffic_Reducti on > 30%

IntrEnb_Traffic Reduction> 1 relations

Intra_Enb_Traff ic_Reduction

19.2) Resolution Mechanism

Condition will be checked on every IntrCell NBR for traffic Reduction for greater than 30% from previous day (-3)+day(-4) to Current day(-2)+day(-1). Condition will be check at Worst VoLTE Drop Hour

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” Template in everybody folder for IntraEnb_Traffic_Reduction. Check for ET/MT changed in previous days for all the IntraCell Relations.

19.3) Case Study

20) IntraEnb_SleepingCell_Comment

20.1) Detection Mechanism

IF

('CellUnavailableTimeDown'==0.0 )

Sleeping Cell Condition is checked at Worst VoLTE Drop Hour for IntraCell Neighbours 3 conditions are checked

('DedicatedPreambles'+'Rand omlySelectedPreamblesHigh' )+'RandomlySelectedPreambl esLow')>500.0))

('AirMacDLByte'==0.0)

IntraEnb_SleepingCell

Cell should not be down Sum of all the RACH preambles > 500, & DL Data Volume==0 Condition will be checked for all the Intra Cell relations

DL Data Volume equal to Zero

20.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template for IntraEnb_SleepingCell To check for L9CA card Reset or Jack In or Jack Out. EARFCN Mismatch Clock Parameter mismatch for 2300 Band RRH Reset/Faulty.

20.3) Case Study

21)

L9CA Card issue Comment

21.1) Detection Mechanism

IF

( 301 CC(Today)- 301 CC(Today-7))*100/(301 CC(Today-7))> 30 %

[0x0367]Rrm_MaxCa llCountOver== 0

301 CC> 500

2300 L9CA/1800 L9CA/850 L9CA issue

Condition for 301 CC, will be checked for all the IntraCell Relations of the same Band Purpose is increase in 301 CC by 30% from previous week same day for all IntraCell Relations of same Band.

RRC CAC Failure equal to Zero

21.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template for L9CA Card issue for specific Band. To check for L9CA card Reset or Jack In or Jack Out.

21.3) Case Study

22) A2 Threshold Parameter Optimization-VoLTE

22.1) Detection Mechanism

IF

Absolute VoLTE Drop in 2300_WDH< 15

Absolute VoLTE Drop in 850_WDH> 50

PRB_%2300_Total_W DH< 80%

Change VoLTE A2 Threshold from -93 dbm to -105 dbm

22.2) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template for A2 threshold change for VoLTE, so that traffic remains on 2300 Band

22.3) Case Study

23) Swap Check_Combined

23.1) Detection Mechanism (2300-1800) IF

Beta

Gamma

(2300Beta_HOAtt_to_1800 Alpha)(2300Beta_HOAtt_to_1800 Beta)> 500

(2300Gamma_HOAtt_to_1 800Beta)(2300Gamma_HOAtt_to_1 800Gamma)> 500

Alpha

(2300Alpha_HOAtt_to_180 0Gamma)(2300Alpha_HOAtt_to_180 0Alpha)> 500 OR

(2300Alpha_HOAtt_to_180 0Beta)(2300Alpha_HOAtt_to_180 0Alpha)> 500

Swap Suspected

OR

(2300Beta_HOAtt_to_1800 Gamma)(2300Beta_HOAtt_to_1800 Beta)> 500

Swap Suspected

OR

(2300Gamma_HOAtt_to_1 800Alpha)(2300Gamma_HOAtt_to_1 800Gamma)> 500

Swap Suspected

23.2) Detection Mechanism (1800-850)

IF

Beta

Gamma

(1800Beta_HOAtt_to_850A lpha)(1800Beta_HOAtt_to_850B eta)> 500

(1800Gamma_HOAtt_to_8 50Beta)(1800Gamma_HOAtt_to_8 50Gamma)> 500

Alpha

(1800Alpha_HOAtt_to_850 Gamma)(1800Alpha_HOAtt_to_850 Alpha)> 500 OR

(1800Alpha_HOAtt_to_850 Beta)(1800Alpha_HOAtt_to_850 Alpha)> 500

Swap Suspected

OR

(1800Beta_HOAtt_to_850G amma)(1800Beta_HOAtt_to_850B eta)> 500

Swap Suspected

OR

(1800Gamma_HOAtt_to_8 50Alpha)(1800Gamma_HOAtt_to_8 50Gamma)> 500

Swap Suspected

23.3) Detection Mechanism (850-2300)

IF

Beta

Gamma

(850Beta_HOAtt_to_2300A lpha)(850Beta_HOAtt_to_2300B eta)> 500

(850Gamma_HOAtt_to_23 00Beta)(850Gamma_HOAtt_to_23 00Gamma)> 500

Alpha

(850Alpha_HOAtt_to_2300 Gamma)(850Alpha_HOAtt_to_2300 Alpha)> 500

OR

OR

(850Alpha_HOAtt_to_2300 Beta)(850Alpha_HOAtt_to_2300 Alpha)> 500

Swap Suspected

(850Beta_HOAtt_to_2300G amma)(850Beta_HOAtt_to_2300B eta)> 500

Swap Suspected

OR

(850Gamma_HOAtt_to_23 00Alpha)(850Gamma_HOAtt_to_23 00Gamma)> 500

Swap Suspected

23.4) Resolution Mechanism

Ideally taking out the whole scope from mycom from “VoLTE_Analysis_Final_1” template for Suspected Swap cases Can be Azimuth Mismatch, High Mechanical Tilt, and Swap Suspected.