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Capacity ManagementAdmission Control & Congestion Control

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Capacitymanagement

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Capacity >> LIMITED RESOURSES

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Capacity >> LIMITED RESOURSES

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Capacity Management

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ADMISSIONCONTROL

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ADMISSION Control OLICIES

If the resource is:

• Up till the admission level, the request is admitted.

ADMITTED

Between the admission and maximum level, (guaranteed, non-handover or (non-

guaranteed, non-handover!handover requests are not admitted unless "# $oft %ongestion

actions can find the required resources to release.

CONDITIONALLY BLOCKED

BLOCKED

BLOCKED

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Admission Re!"est Attri#"tes

Indication of additional resources required, including additional U&!'&

channeliation codes, U&!'& )$*, and so on

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RA$ ASSI%NMENT REUEST message

IE/Group Name Presence Range IE type anre!erence

"emant#csescr#pt#on

Cr#t#ca$#ty Ass#gneCr#t#ca$#ty

+essage pe + ./.0.0 1*$ re2ect

RABs To Be "etup OrMo#!#e L#st

3 1*$ ignore

%RABs To Be "etupOr Mo#!#e Item IEs

0 to4maxnoof")Bs5

%%&#rst "etup OrMo#!y Item

+ 6roupingreason:samecriticalit

*)%7 re2ect

555")B I' + ./.0./ he same")B I' mustonl 8epresent inone group.

-

555#)$$nchronisationIndicator 

3 ./.9.0 -

%%%RABParameters 3 '()(*(+ Includes allnecessarparametersfor ")Bs(8oth for+$% and$6$#including;o$.

-

IE/Group Name

RAB parameters

5raffic %lass

5")B )smmetr Indicator 

5+aximum Bit "ate

56uaranteed Bit "ate

5'eliver 3rder 

5+aximum $'U $ie

%"D, parameters 

5ransfer 'ela

5raffic 7andling <riorit

 %A$$ocat#on/Retent#on pr#or#ty

5$ource $tatistics 'escriptor 

5"elocation "equirement

5$ignalling Indication

5*xtended +aximum Bit "ate

")B <arameters

")B )ssignment "equest message I*sInformation *lements

96<<

/=.>09 ")#)<

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SO'T CON%ESTION

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SO'T CON%ESTION AL%ORIT(M

"# $oft %ongestion will not target users that have alread ongoing 73

attempts, or that have 8een triggered (8ut not finished to do soft congestion

actions 8 earlier admission requests.

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DO)nlin*c+anneli,ationCodes

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Do-nlin* C+anneli,ation codes

"& *

"& )

"&

"& -

"& *."& +)"& ."& *)-"& )3.

0? 7$'<) codes

9 7$-$%%7

0 user @ "<$A>!9> @ $

/ users @ "

<$A>!0/ @ $ 0A

> users @ "<$A>!A> @ $ 9/

)%7

$ A>

%<I%7

B%7

 )I%7

<%7

<I%7

4-"peec5

users 6

"& *)-

"& *

"& )

"&

"& -

"& *."& +)"& ."& *)-"& )3.

"& *

"& )

"&

"& -

"& *."& +)

"& .

/A 7s users @ )-'%7

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Con#t#ona$$y

B$oc7e"o!t Congest#on

Do-nlin* C+anneli,ation

C he admission request can 8e grante if the resource usage p$us t5ea#t#ona$ "& is 8elow the admission level dlCodeAdm.

C )dmission limit (dl%ode)dm is set to ?D (reserving 0?D of the code

tree for new handover legs.

Do0n$#n7 Coe ,sage 8

9 A#t#ona$ Re1uest48

dlCodeAdm

'48

*448

<$ ", 7$,

Eoice,E - "etup

Eoice,E - :O

Grante

GranteGrante

B$oc7e

B$oc7e

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Do-nlin* C+anneli,ation

ADMITTED

CONDITIONALLY BLOCKED

BLOCKED

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DO)nlin* Transmitted carrier

po-er

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%<I%7

%ommon %hannels

0??D (+axransmission<ower F +ax'l<ower%apa8ilit

D (<ower3ffset F 0>

=D (<ower)dm F =

/?D

G 0?D

User raffic

 )dmission %ontrol

%ongestion %ontrol

DO)nlin* T. carrier po-er

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DO)nlin* T. carrier po-er

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C he admission request can 8e granted if the resource usage plus the

additional '& transmitted carrier power is 8elow the admission levelp0rAm.

C )dmission limit (p0rAm is currentl set to =D.

C +onitored 'l ransmitted carrier power is considered for " traffic ( #o

7$'<) <ower

Do0n$#n7 P0r ,sage 8

9 A#t#ona$ Re1uest48

*448

<$ ", 7$,

Eoice, E- "etup

Eoice, E- :O

Grante

GranteGrante B$oc7e

PwrAdm

-38

Con#t#ona$$y

B$oc7e

"o!t Congest#onB$oc7e

DO)nlin* T. carrier po-er

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DO)nlin* T. carrier po-er

ADMITTED

CONDITIONALLY BLOCKED

BLOCKED

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DL & UL Spreading'Actors

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C #ew "equests with $HH, are denied if num8er of

connections exceed sfHH)dm

C ,L "& :#stogram Am#ss#on Po$#cy

/s!Am,$; s!-Am,$; s!*.Am,$; s!-gAm,$

C DL "& :#stogram Mon#tor Am#ss#on Po$#cy

/s!-Am; s!*.Am; s!+)Am; s!*.gAm

C  

DL & UL Spreading 'Actors

Actua$ con!#gurat#on

s!Am,$ < +

s!-Am,$< .

s!*.Am,$ < 34

s!-gAm,$ < .

Actua$ con!#gurat#on

s!-Am < +

s!*.Am < .

s!+)Am < *)

s!*.gAm < .

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Do0n$#n7 %hannel

*lement %onsumption

,p$#n7 %hannel

*lement %onsumption

DL & UL Spreading 'Actors

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UL & DL ()

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C he admission request can 8e granted if the resource usage plus theadditional '&!U& 7ardware is 8elow the admission level dlHwAdm/ulHwAdm.

C )dmission limit dlHwAdm=100% (disabled) and ulHwAdm=90%.

,L := ,sage8 9

A#t#ona$ Re1uest48

*448

<$ ", 7$,Eoice, E- "etup

Eoice, E- :O

Grante

GranteGrante B$oc7e

ulHwAdm

'48

Con#t#ona$$yB$oc7e

"o!t Congest#onB$oc7e

UL & DL ()

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ASE Admision olicyC $ame 8ehavior for 'ownlin and Uplin )$*

C )$*: )ir Interface $peech *quivalents ()$* in uplin and downlinC his monitor accounts for the air interface resources usage in a cell.

C %urrentl 'I$)B&*': ( #o 8locs due to U&!'& )se/ aseDlAdm=500 (MAX A!"#)

/ ase"lAdm=500 (MAX A!"#)

48

<$ ", 7$,

Eoice, E - "etup

Eoice, E - :O

Grante

Grante

aseDlAdm=500 

ase"lAdm=500 

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"er>#ng an Non?ser>#ng E,L Am#ss#on Po$#cy

"# )dmission %ontrol must re2ect an *U& user, requesting the cell as serving cell if the total

num8er of serving cell *U& users including the requested is a8ove eu$"er>#ngCe$$,sersAm 

parameter.

*U& users can 8e in soft!softer handover. It is also possi8le to 8e a8le to limit the *U& usershaving the cell as non-serving cell. his is to 8e a8le to limit the amount of U& hardware

reserved for the non-serving connections.

•eu$"er>#ngCe$$,sersAm; eu$Non"er>#ngCe$$,sersAm(

Ot+er Admission olicies

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CongestionControl

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Congestion Control

C Detects and Reso$>es the following tpes of overload

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CongestionDetection

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UL RT) CELL CON%ESTION

Congest#onCongest#on

so$>eNo congest#on

< . s

< .)*

Actua$$y #sa@$e

#&Cong F A/0F ->. dBm

#&:yst F A??? F A????ms

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DL Cell Congestion

Congest#onCongest#on

so$>eNo congest#on

Actua$ con!#gurat#on

p0rAm < -38

p0rO!!set < *8

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DL CELL CON%ESTION E2AMLE

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DL (SDA Congestion Detection

Congest#on Congest#onso$>e

No congest#on

Actua$ con!#gurat#on

max<ower3verload7stime F 0? s

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CongestionResol3e

(Andling

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DL Cell and DL (SDA Congestion

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DL Cell and DL (SDA CongestionResol3e (andling

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Congestion Control Resol3e Actions

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CON%ESTION CONTROL RESOL4E

< + A"E < * A"E

< + s

< 4(- s< ) s

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racticale.amples

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Spotting #loc*ing in SMART

D'5678 RA$ $loc*ing E2AMLE

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D'5678 RA$ $loc*ing E2AMLEd"e to DL C( Codes & DL T. -r

%" to clear

8locing

J implementation of 7$'<)K

roll8ac to default parameters

#ew %" to reduce 8locing

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I' yo" +a3e a CSSR degradation

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)(AT to loo* 9or:

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RRC $loc*ing

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RA$ $loc*ing

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Congestion

( t l it it+ t i ti :

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(o- to sol3e it -it+ parametri,ation:examples for some common issues

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Additionaldoc"ments

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