cell designation

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Quadgen Internal Guidelines

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+2222

ALU LTE COUNTERs & KPIs

Prepared (also subject responsible if other) No.

Venkatesh N & Mohammed abir Version 1!ppro"ed #hecked $ate

%ech. $irector 'uren 'heno Market *ead 'achin upte ,2-11-2,1

Copyright

/ #opri0ht uad0en ireless 2,1. !ll ri0hts reser"ed.

is!lai"er

No part of this document ma be reproduced in an form 3ithout the 3ritten permission of the

copri0ht o3ner.


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%he contents of this document are subject to re"ision 3ithout notice due to continued pro0ress in

methodolo04 desi0n and manufacturin0. uad0en ireless 'olutions 5nc. shall ha"e no liabilit

for an error or dama0e of an kind resultin0 from the use of this document.


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Contents

1. Introdu!tion##############################$$$%

2. Counters################################$2.1. #ounter $efinition66666666666666666666666666666...72.2. #ounter Namin0 #on"ention6666666666666666666666666.72.8. %pes of #ounter666666666666666666666666666666.7

%$ A!!essi'ility##############################$$$(

8.1. 99# #onnection :stablishment66666666666666666666666...8.1.1 99# 'etup 'uccess 9ate66666666666666666666666....

3.1.2 Counters for RRC Connection Failures.6

3.1.3 RRC Connection without Repetition Success Rate.8

3.1.4 RRC Connection without Repetition Failure Rate8

3.2 S1 Connection Establishment

3.2.1 S1 Si!nallin! Establishment Success Rate...

3.2.2 Counters for S1 Establishment Failures1"

3.3 ER#$ Connection Establishment..11

3.3.1 %nitial ER#$ Setup Success Rate.11

3.4 &S Call 'ata Success Rate12

4. Mobility13

4.1. &S (an)o*er Success Rate..13

4.2. (+ &reparation Success Rate..14

4.3. (+ E,ecution Success Rate.1-

4.4. Counters for (an)o*er Failures1

5. Retainability23

5.1. ER#$ S/stem Retainabilit/ Rate..23

5.2. %R#0 Re)irection E,clu)in! CSF$...2-

6. Appendix..27

6.1. RRC Connection Establishment Call flow with counters...2

6.2. 2 (+ Call Flow with counters..28


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) Introdu!tion

%he aim of this document is to help the en0ineers to understand the ;e Performance

5ndicators (;P5) & the respecti"e counters.

%his document es used to calculate these ;P5>s and the

respecti"e counters in detail. !lso counters for failures are also es 3hich 3e monitor for our !%&% project is co"ered in this document.

!lso t3o sample call flo3s 3ith correspondin0 counters are pro"ided in the appendi< 3hich 3ill

help the en0ineers to "isuali@e the process.


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* LTE Cell esignations

*$)+hat is !ell designation and ,hy do ,e re-uire it.

#ell $esi0nation is to assi0n certain "alues for the cell le"el parameters dependin0 upon

the location of that cell 3ith respect to other cells in the surroundin0 area that are

facin0Binteractin0 3ith it.

$oin0 so 3ill facilitate in the 59!% reselectionBredirectionBhando"erprocedure of the desi0nated cell 3ith its nei0hbourin0 cell(s)

*$*O'/e!ti0e1

!chie"e traffic balance bet3een the carriers b mo"in0 traffic to the capacit

laers 3ith idle mode as the first option

#ontrol the laer upon 3hich the C:s camp to the desired laer and e"entuall

consume resources predominantl throu0h idle mode traffic balance settin0s.

5mpro"e o"erall 9etainabilit and throu0hput b keepin0 the traffic on the cleanercapacit laers (MDBED) 3hich has better '5N9 conditions.

. Mo"e the traffic out of capacit laers belo3 certain si0nal stren0th conditions so

that the rescued traffic 3ill be handled b co"era0e laer (*D) carriers.

*$%Types o2 LTE Cell esignations1

%here are four tpes of *%: cell desi0nations that can be assi0ned to a cell as follo3sF

a3 Intra LTE !ell designation1


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'3 Inter LTE Cell designation1

!3 Inter4'order LTE Cell esignation1

d3 IRAT LTE Cell esignation1

%$ Intra LTE !ell designation

%$) UsageF hen desi0nated cell is facin0 another *%: cell of the same :!9=#N

0o be use) onl/ on the co*era!e la/er$.5$($ ma/ be use) onl/ when $ is absent

%$* I"pa!tF

5ntra freAuenc E?>s to the nei0hbourin0 *%: cells take place "ia !8 e"ent(based on

relati"e thresholds)

%he load based 5=E? can happen bet3een all cell desi0nations(in both 3as)

*oad based 5=E? is allo3ed "ia :"ent !7 at -1,2dDm

59!% to CM%' can happen either "ia e"ent D2 or b e"en !2(D'=)

59!% 3ill happen "ia e"ent D2 at -11GdDm subjected to measured CM%' 9'#P at

atleast -1,GdDm(core settin0s applied in case of 5ntra *%: cells)


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59!% 3ill happen "ia e"ent !2(D'=) at -122dDm(%%%H12I,ms) 3hen 9'9P

conditions become poorest4for calls to retain in *%:

9eselection toBfrom an other *%: cell is allo3ed includin0 cell reselection toBfrom

nearb CM%' cell

No E0ent A( I56O to any other !ell

%$% 1Idle 7ode Para"eters

'et parameters as sho3n belo3F

%$1RRC7easure"entCon2 I

SectorDesignation

LTECell/RRCMeasurementConf


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Intra 0

$ IRAT LTE !ell designation

$) UsageF hen desi0nated cell borders an CM%'-onl site outside the *%: pol0on

0o be use) onl/ on the co*era!e la/er$

$* I"pa!tF

59!% happens 3hen ser"in0 cell 9'9P falls belo3 J-112dDm "ia e"ent D2

Csed for cells that reAuire a00ressi"e e"ent D2 59!% Eando"er rather than e"ent !2

for P' 59!% E?

59!%s 3ill be allo3ed onl from the co"era0e laer (*D).

No 59!%s are allo3ed from the capacit laer (MD)4 if the C: needs rescue it does an

5nter-=reAuenc hando"er to the co"era0e laer (*D)

*oad based 5=E? 3ill be allo3ed from 5ntra *%: to 5nter *%: "ia :"ent !7.%he load

based 5=E? can happen bet3een all cell desi0nations(in both 3as)

5=E? "ia e"ent ! at -112dDm can happen onl from upper laers to the lo3er laer

ie. MD(or e"en ED) to *D

9eselection toBfrom other 5ntraB5nter *%: cell is allo3ed includin0 cell reselection

toBfrom nearb CM%' cell


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$% 1Idle 7ode Para"eters


$1RRC7easure"entCon2 I

SectorDesignation


IRAT 3


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($ Inter 8order LTE !ell designation

($) UsageF hen desi0nated *D cell borders an *D cell of a different freAuenc

0o be use) onl/ on the co*era!e la/er$

($* I"pa!tF

#ells that reAuire !00ressi"e e"ent !8(since it is based on relati"e threshold)

5=E? to retain calls

5=E? 3ill take place onl from the co"era0e laer

:"ent !8 5=E? bet3een the freAuenc borders are 2 3a defined

9eselection toBfrom other 5ntraB5nter *%: cell is allo3ed

9eselection and hando"er directl to an CM%' cell is disabled

9eselection from an CM%' cell to an *%: 5nter Dorder *%: cell is not allo3ed


5=E? "ia e"ent ! at -112dDm can happen onl from upper laers to the lo3er

laer ie. MD(or e"en ED) to *D

.

($% 1Idle 7ode Para"eters



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($1RRC7easure"entCon2 I

SectorDesignation


Inter-border 2

9$ Inter LTE !ell designation

9$) UsageF hen desi0nated 2# cell borders 3ith a cell of a different freAuenc.

0o be use) onl/ on the capacit/ la/er5$ or ($

9$* I"pa!tF

5ntra freAuenc hando"ers to other capacit laer 5nter *%: cells allo3ed

#o"era0e based 5=E? happens onl to the lo3er laer and is at -112dDm

No 59!%Breselection allo3ed directl toBfrom the capacit laer toBfrom an CM%'

site. 9escue inter freAuenc E? to the co"era0e laer 3ill be reAuired.


#ell reselectionBhando"er allo3ed toBfrom an other *%: cell desi0nation


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9$% 1Idle 7ode Para"eters


9$1RRC7easure"entCon2 I

SectorDesignation


IRAT 1


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9$ APPENI:

9$) RRC Conne!tion Re-uest Call 2lo, ,ith !ounters1


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cell designation

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