sae dimensioning

8/13/2019 SAE Dimensioning

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WCDMA R5/GSM R12.1, SAE Dimensioning

This document provides Traffic Size Alteration Event (SAE) list for WCDMA /GSM.

Not all SAEs are analysed in this document. Only critical (traffic affecting) SAEs areconsidered.

This document is divided into the following sections!

". #S$. %$TS

GSM! This section covers!

- Node sizes for #S$- Assumptions used for dimensioning SAEs- SAE settings for different node sizes- $iscellaneous SAE impacts due to #S$ features (such as #&'S * +S

A$E+ &h, -N/ased $N&)

UMTS! This section covers!

- Node sizes for %$TS- Assumptions used for dimensioning SAEs- SAE settings for different node sizes

GSM

1.1 Node Sizes

A node has /een categorised into three types! Small medium or large sized node.

The size of an $S01+' or $S01+'0SS2 node is defined /y the amount of traffic (inErlang) handled /y the node.

&'A and 3A can /e integrated with an $S and its size depends on the num/er ofaccesses.

Table 1: GSM 900/100 R12.1 !o"e si#e "e$ini%ion &$o' A() 212 *0+

!o"e T-e Small si#e no"e2 Me"im si#e !o"e2 a'ge si#e no"e2

$S01+'"456 Erlang 7 /elow("668 su/s 7 /elow)

"49" ,9:6 Erlang("668 ; 668 su/s)

,9:" 9,46 Erlang(668 ; ,668 su/s)

"


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$S01+'0SS2",66 Erlang 7 /elow(4,666 su/s 7 /elow)"

",6" peaB margin has /een used when computing SAE settings.

9. N- values are calculated at the /locBing factor of 6.66".

1.3 SAE Settings

!TE: SAE se%%ings -'oi"e" in %is "o3men% a'e base" on E'i3sson "e$al%%'a$$i3 mo"el &See Re$41+. Te SAEs aen6% been "imensione" $o' %e 7o's% 3ases3ena'io.

2or each node it is recommended that SAEs /e set to at least the followingrecommended N- values after the upgrade. ECact0precise calculations were no%performed for the SAEs in this document. Only settings for guiding the operator duringthe upgrade are provided. Each node should /e investigated for more refined SAEsettings.

1.3.1 MSC/VLR

2or each $S01+' node SAEs need to /e set to at least the recommended N- values(as shown in Ta/le ).See section "."for details on the node size (small medium andlarge).


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Terms used in the Ta/le are!

A D Size of the node in Erlang

Sf D peaB margin (6>)

Table 2: SAE is% $o' MSC/8R

SAE!mbe'

lo3name

SAE Se%%ing

'ie$ ;o'mla/3ommen%sSmall!o"e

Me"im!o"e

a'ge!o"e

" T'AO 4403 8748 13093 A Sf

( individuals per call)

966 A&

13084 26119 39153 < A Sf

(< individuals per call)

966 OFG 4403 8748 13093 A Sf


966 O$A-N 19595 39147 58698 5 A Sf

(5 individuals per call)

966 4S'$F 165 306 448

Used for processing connectionlessmessages

966 E*F 2200 2200 2200

" individual for call with Echo ancellor

966 E*SE " individual for call with Echo ancellor

966 $A*A& 1077 2092 3107 Authentication data $A& 1,

966 $E*F 3107 6047 8976 ".9 A Sf

('eplacing SAE


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SAE!mbe'

lo3name

SAE Se%%ing


Me"im!o"e

a'ge!o"e

966 $FONA&, 90 155 207 -nter $S Fandover Non Anchor $S

$A& 1,

966 $-G%*SE 221 419 617

One per ircuit Switched data calls

966 $O-&F- 3255 6452 9648 " A Sf

(" individual per call)

966 $O-&FO 2673 5285 7898 A Sf


966 $SEA&, 287 550 814

966 $%SSAN One per %SS* procedure

966 $1-&F 398 773 1145

One per call /ut "9 sec hold time

96"964 3 302 580 859

Falf of SAE 96: 3

96 $E*F 27 45 63

Event charging for S$S SS and +S

96, $E*F 228 433 638 Event harging for Advice of harge

SS invocation and alternate speech0faC

96: 3 580 1135 1671 = individuals held for 9 sec during call

setup

9659"" 3 99 99 99

+ess usage of the /ig /uffers

of

calls)


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SAE!mbe'

lo3name

SAE Se%%ing


Me"im!o"e

a'ge!o"e


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SAE!mbe'

lo3name

SAE Se%%ing


Me"im!o"e

a'ge!o"e

":,=":,< +A* 75 75 75


":9" +A$EAS 40000 40000 40000 1aria/le access and &rogram store

access for each active /locB

1.3.2 MSC/VLR/SSF

2or each $S01+'0SS2 node SAEs need to /e set to at least the recommended N-values (as shown in Ta/le ,).

Terms used in the Ta/le , are!


Sf D &eaB margin (6>)

Table *: SAE is% $o' MSC/8R/SS;

SAE!mbe'

lo3!ame

SAE Se%%ing


Me"im!o"e

a'ge!o"e

" T'AO 3222 6359 9530 A Sf


966 A& 12699 25249 37934 : A Sf

(: individuals per call)

966 OFG 4801 9508 14264 , A Sf

(, individuals per call)

966 O$A-N

17438 34694 52136 "" A Sf

("" individuals per call)

966 4S'$F 165 306 448

Used for processing connectionlessmessages

966 E*F 2200 2200 2200

" individual for call with Echo ancellor


966 $A*A& 790 1534 2274

Authentication data $A& 1,


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SAE!mbe'

lo3!ame

SAE Se%%ing


Me"im!o"e

a'ge!o"e

966 $E*F 2296 4435 6575 ".9 A Sf

('eplacing SAE


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SAE!mbe'

lo3!ame

SAE Se%%ing


Me"im!o"e

a'ge!o"e


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SAE!mbe'

lo3!ame

SAE Se%%ing


Me"im!o"e

a'ge!o"e

"655 #'-

""6, $A3 1842 3610 5396

One individual per call

""6< $SE"." A Sf

("." individuals per call)

"""" $&A#

"",6 O$A-N 34813 69326 104210 A Sf


"", $$$ 2153 4229 6327 -ndividual reIuired for all

communication to 3S (calls +% etc.)

":


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Table includesonly #&'S su/scri/ers (not #S$).

. "9> of the su/scri/ers in the networB have /oth #&'S and non#&'S su/scription.

,. The following ta/le gives information only on News for #&'S. There are common

SAEs (used /y /oth #S$ and #&'S systems) that are affected (due to increasedsignalling0paging) when #'&S is present (eg. 4T& SO $&A# etc.). Thesecommon SAEs are not considered in this document.

Table 5: SAE is% $o' G(RS

SAE!mbe'

lo3!ame

!o"e %o bese% in

SAE Se%%ing 'ie$ ;o'mla/3ommen%s

Small

!o"e

Me"im

!o"e

a'ge !o"e

966 F#+%A& F+' 24 37 50 2or location updating of #&'S

su/scri/ers

966 F#S*F F+' 24 37 50 2or #&'S su/scri/er data update

operations (-nsert0*elete)

966 FSA-A&, F+'21 21 159 2or reIuesting Authentication

information for #&'S calls

"6


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SAE!mbe'

lo3!ame

!o"e %o bese% in


Small!o"e

Me"im!o"e

a'ge !o"e

966 $#$F $S 149 274 400 &acBing0unpacBing of messages

/etween S#SN$S

966 $#&'O $S149 292 427 All 3SSA& communication /etween

S#SN$S

966 $#S-2 $S 157 292 427 'eception of connectionless

message /etween S#SN$S

of the positioning reIuests will reIuire Assisted #lo/al &ositioning System (A#&S) method

9. Num/er of $o/ileoriginated location reIuests per su/scri/er during the /usy hourD 6.69

""


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1.4.4 IN-BASED MOBILE NUMBER PORTABILITY SPECIFIC SAES

-N/ased $o/ile Num/er &orta/ility ($N&) service is used for the Iuery of the $N&data/ase during the call set up. The routing information returned /y the data/ase isused for routing the call towards the recipient networB.

The SAE settings provided in Ta/le 4 are for information purposes only. These SAEsmust /e set in case the -N/ased $N& feature is activated in the networB. -f the -N/ased $N& feature is no%present in the networB the N- value of the SAEs should /e setto zero.

Note

". 2ifteen > of traffic uses $o/ile Num/er &orta/ility ($N&) feature and terminates toported num/ers.

Table >: SAE is% $o' M!(

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge !o"e

966 *KF 21 22 28

Only when -N/ased $N& featurepresent. harging of calls to porta/le

num/ers

966 *KO-&- 248 471 678

Only when -N/ased $N& featurepresent. 2or each incoming call to

ported num/er

966 *KO-&O 241 456 657

Only when -N/ased $N& featurepresent. 2or each outgoing call to

ported num/er

966 *K$NT 248 471 678 %N) data*ase +"er,

"69" S2+-*F 60 111 153 &-N#) dialog"e (andler

1.4.5 CALL DATA COLLECTION SPECIFIC SAES

all *ata ollection function is used to collect traffic data. The collected traffic data can

/e used to o/tain various information for the node liBes statistics. The statisticalinformation may /e used to maBe decision on the modifications to the nodalconfiguration.

The SAE settings provided in Ta/le : are for information purposes only. These SAEsmust /e set in case all *ata ollection function is active in the node. -f this function isnot present is not active in the node then the N- value of the SAEs should /e set tozero.

",


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Note!

". The values listed in Ta/le : are recommended for a $S01+' node

Table : Call Da%a Colle3%ion S-e3i$i3 SAEs

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

966 + 2042 4024 6006

.nl, /(en 'all ata collection is acti!e

1 indi!id"al per call


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

466 SFS$S 22 34 48

Num/er of A& v, $O S$S

46" SFS$S 22 34 48


46 SFS$S 22 34 48


"9


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2 WCDMA

2.1 Node SizeA node has /een categorised into three types! Small medium or large sized node.

The size of an %$S01+' or %$S01+'0SS2 node is defined /y the amount of traffic(in Erlang) handled /y the node.

Table 10: UMTS MSC !o"e si#e "e$ini%ion &A() 212 **+


%$S01+' ,66 Erlang 7 /elow

("668 su/s 7 /elow)

,6" =466 Erlang

("668 ; 6"8 su/s)

=46" 4"66 Erlang

(6"8 ; ,68 su/s)

%$S01+'0SS2 "566 Erlang 7 /elow(:6666 su/s 7 /elow)"

"56" ,:66 Erlang(:68 ; "


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2.3 SAE settings

!TE: SAE se%%ings -'oi"e" in %is "o3men% a'e base" on E'i3sson "e$al%%'a$$i3 mo"el &See Re$41+. Te SAEs aen6% been "imensione" $o' %e 7o's% 3ases3ena'io.

2or each node it is recommended that SAEs /e set to at least the followingrecommended N- values after the upgrade. ECact0precise calculations were no%performed for the SAEs in this document. Only settings for guiding the operator duringthe upgrade are provided. Each node should /e investigated for more refined SAEsettings after the upgrade.

2.3.1 MSC/MGW (100% ISUP)

2or each $S0$#G node SAEs need to /e set to at least the recommended N- values(as shown in Ta/le ""). The SAEs settings are recommended for a $S0$#G nodeusing -S%& signalling at the Einterface.

See section."for details on the node size (small medium and large).

Terms used in the Ta/le "" are!


Sf D &eaB margin(6>)

Table 11: SAE is% $o' MSC/MGW

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

" T'AO 5797 11531 17270 L A L Sf


"


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


966 4S'$F 189 354 520

966 OFG 5797 11531 17270

A Sf


966 O$A-N 28733 57404 86100 "6 L A L Sf

("6 individuals per call)


966 ETA*E1 1 de!ice per call

Fardware related

966 $A*A& 1081 2099 3118 Stores Send #"t(entication nfo %#)

!3 operation data

966 $A%TF 1098 2133 3170 Stores security related function

information

966 $E*F 3862 7537 11213 ".9 L A L Sf

('eplacing SAE


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

966 $SEA&, 288 552 817

966 $%E& 605 1181 1741

message *"ffer for "nsent $rror ndicationmessages

966 $%-%$ 2506 4949 7395 " L A L Sf


966 $%'E+ 117 212 306 -ntra$S S'NS relocation and %$TS

to #S$ handover

966 $%S+ 3467 6871 10278 Stores connectionless message data

/etween $S01+' Server and 'N

966 $%SSAN 171 319 468

One per %SS* procedure

966 $1-&F 493 963 1420

One per call /ut "9 secs hold time

966 T'A&F .ne indi!id"al per call

Fardwarerelated

96"964 3 391 759 1125

Falf of SAE 96: 3

96 $E*F 28 46 64




96: 3 759 1478 2187 = individuals held for 9 sec during call

setup

9659"" 3 99 99 99


9", AT+ 612 1195 1762

AA+ message /uffers

9


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


21/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

":,, +A* 835 1626 2406 = individuals held for 9 sec during call

setup

":,=":,< +A* 75 75 75


":9" +A*S* 40000 40000 40000 1aria/le access and program store

access for each active /locB

2.3.2 MSC/SSF/MGW (100% ISUP)

2or each $S0SS20$#G node SAEs need to /e set to at least the recommended N-values (as shown in Ta/le "). The SAEs settings are recommended for a$S0SS20$#G node using -S%& signalling at the Einterface.

Terms used in the Ta/le " are!



Table 12: SAE lis% $o' MSC/SS;/MGW

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

" T'AO 4658 9259 13863 L A L Sf


"


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


966 3T$ 4658 9259 13863 L A L Sf


966 4S'$F 207 390 573

966 OFG 6955 13857 20764 , A Sf

(, individuals per call)

966 O$A-N 27634 55241 82867 " L A L Sf

(" individuals per call)



Fardware related

966 $A*A& 871 1695 2513

Stores Send #"t(entication nfo %#)

!3 operation data


information

966 $E*F 3124 6081 9031 ".9 L A L Sf

('eplacing SAE


23/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

966 $S*F 35 50 64

Su/scri/er data handler

966 $SEA&, 235 447 660

966 $%E& 489 955 1409

message *"ffer for "nsent $rror ndicationmessages

966 $%-%$ 2021 3981 5943 " L A L Sf


966 $%'E+ 96 174 250 -ntra$S S'NS relocation and %$TS

to #S$ handover

966 $%S+ 2791 5522 8256 Stores connectionless message data

/etween $S01+' Server and 'N

966 $%SSAN 142 261 380


966 $1-&F 400 777 1152

One per call /ut "9 secs hold time

966 T'A&F .ne indi!id"al per call

Fardwarerelated

96"964 3 1197 2333 3470

Falf of SAE 96: 3

96 $E*F 24 39 54




96: 3 2332 4604 6878 : individuals held for 9 sec during call

setup

9659"" 3 99 99 99


9", AT+ 495 967 1426

AA+ message /uffers

9


24/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


25/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

"", $$$ 2770 5481 8194 " L A LSf


":

9

ISUP

;ig'e 1: !e%7o' S3ena'io 1

R!CR!CC

UE 1

PSTN

MSC/MGW

MSC/MGW

BICC

UE 2UE1 to UE2

UE2

Speech

Signalling


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. &ercentage of calls using 3- signalling 6>

Terms used in the Ta/le ", are!



Table 1*: SAE lis% $o' MSC/MGW &0@ SU(, 20@ CC+

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

" T'AO

11531 22999 34479 = L A L Sf

(= individuals per call)

"


27/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


966 O$A-N 44503 88943 133427 "< L A L Sf

("< individuals per call)



Fardware related

966 $A*A& 1081 2099 3118 Stores Send Authentication -nfoP ($A&

v, )operation data


information

966 $E*F 3862 7537 11215 ".9 L A L Sf

('eplacing SAE


28/35


29/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

duration


30/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


":


31/35

Terms used in the Ta/le "= are!



Table 1


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

966 O$A-N 42799 85589 128325 "5 L A L Sf

("5 individuals per call)

966 E*SE" individual for call with Echo

ancellor


Fardware related

966 $A*A& 871 1695 2511 Stores Send Authentication -nfoP

($A& v, )operation data


information

966 $E*F 3124 6081 9025 ".9 L A L Sf('eplacing SAE


33/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


966 $%'E+ 96 174 250 -ntra$S S'NS relocation and

%$TS to #S$ handover

966 $%S+ 2791 5522 8250

Stores connectionless messagedata /etween $S01+' Server

and 'N

966 $%SSAN 142 261 379


966 $1-&F 400 777 1151 One per call /ut "9 secs hold

time

966 T'A&F

.ne indi!id"al

Fardwarerelated

96" 3-&FT 15 N !al"e of S#$ 500 ):

96"964 3 1197 2333 3468

Falf of SAE 96: 3

96 3-&FT 05 N !al"e of S#$ 500 ):

Kueuing of T'A$ core message

96 $E*F 24 39 54 Event charging for S$S SS and

+S

96, $E*F 229 435 640

Event harging for Advice ofharge SS invocation and

alternate speech0faC

96: 3 2332 4604 6873 = individuals held for 9 sec during

call setup

9659"" 3 99 99 99


9", AT+ 966 1879 2787

AA+ message /uffers

9


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SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e


35/35

SAE!mbe'

lo3name


Small!o"e

Me"im!o"e

a'ge!o"e

"""" $&A# 149 275 401 -ndividual seized at paging

reIuest

"",6 O$A-N 50611 101222 151771 6 A Sf

(6 individuals per call)

"", $$$ 2770 5481 8189 " L A L Sf


":

sae dimensioning

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