cac - call admission control présentation
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8/9/2019 CAC - Call Admission Control Prsentation
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CAC : Call Admission Control
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Basic procedure for a resource-based adm
Code resource-based admission succeeds if
the remaining code resources are sufficient for
the service to be admitted.
Available cell code resources
Available cell power resources
NodeB credit resources, which are used to
measure the channel demodulation capability of
NodeBs
Available ub transmission bandwidth
Number of !"#PA users $only for !"#PA services%
Number of !"&PA users $only for !"&PA services%
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NodeB Credit Resource-based CAC
On RRC Connection Setup Requests AMR Connection Setup
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Iub & Code Resource-based CAC
Iub Transmission Resource-based CAC
Iub transmission resource-based CAC applies to R99, HSDPA, and HSUPA services in both
uplink and donlink!
Cell Code Resource-based CAC
Cell code resource-based CAC applies to R99 services onl" in donlink! Cell code resource-based CAC does not appl" to HSDPA services because code resource
have been reserved #or HSDPA services! In addition, these resources can be shared b" HSDPA
services!
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CAC Based on the Number of S!A "s
CAC Based on the Number of S!A "sers
$he number o# HSDPA%HSUPA users in the cell is less than or e&ual to the threshold speci#ieMaxHsdpaUserNum/ MaxHsupaUserNumonce the HSDPA%HSUPA service is admitted!
$he number o# HSDPA%HSUPA users in the cell is less than or e&ual to the licensed limit on
HSDPA%HSUPA service is admitted!
$he number o# HSDPA%HSUPA users in the 'ode( is less than or e&ual to the threshold spec
NodeBHsdpaMaxUserNum/NodeBHsupaMaxUserNum once the HSDPA%HSUPA service
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Cell !o#er Resource-based CAC
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Cell !o#er Resource-based CAC
$o#nlin% !o#er-Based Admission $ecision for S!A Cells Based on Alorithm '
P(R-based decision) $he P(R o# all e*istin+ services must +reater than or e&ual to the admissio
HsdpaStrmPBRThd(HsdpaBePBRThd!
oad-based decision) $he total donlink load a#ter the ne RA( access must be less than or
threshold o# the total donlink poer o# the cell .DlCellTotalThd/!
!o#er-Based Admission Alorithm ' for RAB Setup in $)
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Cell !o#er Resource-based CAC
!o#er-Based Admission Alorithm * for RAB Setup in ")
Based on +qui,alent Number of "sers
$he 01!1 kbit%s A2R tra##ic is de#ined as one 3'U
In the normal state, hen the uplink 3'U admission #or a ne RA( is implemented, the R'C cal
3'U o# the RA(, and then estimates hether the ratio o# the total uplink 3'U a#ter the ne R
ma*imum 3'U .UlTotalEqUserNum/ is less than or e&ual to the cell uplink admission thresh
t"pe o# service! $he threshold ma" be UlNonCtrlThdForAMR, UlNonCtrlT
UlNonCtrlThdForther, or UlNonCtrlThdForHo! I# the condition is met, the R'C admits the ac
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Thank foryour
Attention
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