Slide 1
Automatic Access Class RestrictionRAN2480R 255 G 204 B 0R 255 G
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Engineering / Rafal Nowicki
RAN2480 Automatic Access Class RestrictionTable of
Contents1Introduction Motivation and Feature OverviewMain
Menu2InterdependenciesInterdependencies with Other Features and
FunctionsTechnical DetailsFunctionality and Implementation, Message
Flows3Configuration ManagementParameters5Performance
AspectsCounters4Deployment AspectsFeature ActivationR 255 G 204 B
0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B 122R
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# Nokia Siemens Networks 2013For internal useMBB CS Network
Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Increase Restriction Level
Hysteresis for Received Total Wideband Power TriggerAutomatic
Access Class Increase Restriction Level Hysteresis for Received
Total Wideband Power TriggerAbbreviated name
AutoACIncRestHysRTWPDescriptionThis parameter defines the time
period during which the UL load of the cell due to total received
wideband power must stay greater than the threshold value to update
(increase) the AC restriction level.MOCRNACData typeNumberRange and
step5...60 s, step 1 sDefault value30 sIn case of overload state,
AC restriction level is increased more frequently for low setting
and less frequently for higher settingMain MenuR 255 G 204 B 0R 255
G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G 234
B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R
60 G 170 B 0Primary colors:To change the document information in
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Engineering / Rafal NowickiIntroductionBrief Introduction Example
ScenarioTable of ContentsOverload detected and one Access Class
barred 0123456789Overload continues so the number of barred Access
Classes is
increased01234567890123456789012345678901234567890123456789Barred
Access Classes are cycled to avoid specific UE from being barred
for long periods of time Overload recovers so the number of barred
Access Classes is reduced and released0123456789Main MenuR 255 G
204 B 0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B
122R 234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B
255Supporting colors:R 60 G 170 B 0Primary colors:To change the
document information in the footer, press [Alt + F8] and use the
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Engineering / Rafal NowickiInterdependenciesSoftware Requirements
and Software Enhancements for RAN2480 Automatic Access Class
RestrictionTable of ContentsSoftware requirements:There are no
software requirements for the RAN2480 Automatic Access Class
RestrictionSoftware features co-existing with the RAN2480 Automatic
Access Class Restriction feature:RAN801 Radio Access Regulation
FunctionRAN1128 Dynamic Access Class RestrictionRAN1167 Domain
Specific Access Class RestrictionRAN2480 Automatic Access Class
RestrictionRAN1167Domain Specific Access Class
RestrictionRAN801Radio Access Regulation FunctionRAN1128Dynamic
Access Class RestrictionMain MenuR 255 G 204 B 0R 255 G 130 B 0R
127G 16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R 170
G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R 60 G 170 B
0Primary colors:To change the document information in the footer,
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# Nokia Siemens Networks 2013For internal useMBB CS Network
Engineering / Rafal NowickiConfiguration ManagementNew Management
ParametersTable of ContentsThere are new management parameters
introduced with the RAN2480 Automatic Access Class
Restriction:RNFC-Automatic Access Class Restriction
EnabledWCEL-Automatic Access Class Restriction Uplink Overload
ThresholdWCEL-Domain Specific Access Class
RestrictionRNAC-Automatic Access Class Restriction Level Update
IntervalRNAC-Access Restriction for Cell_PCH State UERNAC-Automatic
Access Class Restriction Trigger of RNC LoadRNAC-Automatic Access
Class Maximum Restriction LevelRNAC-Automatic Access Class Increase
Restriction Level Hysteresis for Received Total Wideband Power
TriggerRNAC-Automatic Access Class Decrease Restriction Level
Hysteresis for Received Total Wideband Power TriggerRNAC-Automatic
Access Class Increase Restriction Level Hysteresis for NRT Queue
Length TriggerRNAC-Automatic Access Class Decrease Restriction
Level Hysteresis for NRT Queue Length TriggerMain MenuR 255 G 204 B
0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B 122R
234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting
colors:R 60 G 170 B 0Primary colors:To change the document
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Engineering / Rafal NowickiDeployment AspectsLicensing and
Activation AspectsTable of ContentsRAN2480 Automatic Access Class
Restriction is an optional feature and it is controlled by the RNC
level LK Automatic Access Class Restriction with the following
requirements:License control in network element RNC license
keyLicense control attributes are Long-term ON/OFF licenseType of
license key is ON/OFFChanges of the feature state have immediate
effect on the feature activity in the RNCThe following conditions
have to be fulfilled to apply RAN2480 in a cell:State of the
Automatic Access Class Restriction license is OnThe
RNFC-AutoACResEnabled parameter is set to 0b00001111 (enabled for
all triggers)The expected outcome of the activation of the RAN2480
in a cell:The Automatic Access Class Restriction feature is
activated for all of the triggers and restrict the access for the
UEs to the radio network for the list of barred access classes
broadcasted in the SIB3:Received total wideband powerNRT scheduling
queue lengthCN overloadRNC overloadThe RNFC-AutoACResEnabled can be
set to Enabled for any of the triggers independentlyMain MenuR 255
G 204 B 0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B
122R 234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B
255Supporting colors:R 60 G 170 B 0Primary colors:To change the
document information in the footer, press [Alt + F8] and use the
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Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Restriction EnabledTable of
ContentsAutomatic Access Class Restriction EnabledAbbreviated name
AutoACResEnabledDescriptionThis parameter enables/disables the use
of Automatic Access Class restriction in the RNC for different
overload triggers. Activation and deactivation can be done
separately for different overload triggers.
Active triggers can restricted the number of UE Access Classes
using SIB messages in case overload is detected due to those
triggers. Restricted access classes cannot access radio
network.MOCRNFCData typeBitmaskRange and stepBit 0: Received total
wideband power, Bit 1: NRT scheduling queue length, Bit 2: CN
overload, Bit 3: RNC overloadDefault value0b00000000Automatic
Access Class restriction feature is enabled, if at least one bit
(bit0, bit1, bit2, bit3) is set to 1.Main MenuR 255 G 204 B 0R 255
G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G 234
B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R
60 G 170 B 0Primary colors:To change the document information in
the footer, press [Alt + F8] and use the
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Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Restriction Uplink Overload
ThresholdTable of ContentsAutomatic Access Class Restriction Uplink
Overload ThresholdAbbreviated name AutoACResULOLThrDescriptionThis
parameter defines the threshold for the UL interference load to
start barring access classes. The parameter defines the offset from
the planned target level PrxTarget in case of non-HSPA cell and
PrxMaxTargetBTS for HSPA configured cell.MOCWCELData
typeNumberRange and step-5...25 dB, step 0.1 dBDefault value5 dBLow
offset value is used in case of non-HSPA cell and high offset value
for HSPA configured cell.Main MenuR 255 G 204 B 0R 255 G 130 B 0R
127G 16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R 170
G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R 60 G 170 B
0Primary colors:To change the document information in the footer,
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# Nokia Siemens Networks 2013For internal useMBB CS Network
Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Domain Specific Access Class RestrictionTable of
ContentsDomain Specific Access Class RestrictionAbbreviated name
AutoACDSACRestrictionDescriptionThis parameter defines the
particular CN domain (CS/PS/both) and the Cell Access Restriction
for which the Access Classes are restricted to access the radio
network in the cell.MOCWCELData typeNumberRange and stepRestrict CS
and PS domain (0),Restrict PS domain (1), Restrict CS domain (2),
Restrict PS domain and Cell Access (3), Restrict CS domain and Cell
Access (4), Restrict PS and CS domain and Cell Access (5),Cell
Access Restriction (6)Default valueRestrict PS domain and Cell
Access (3)Main MenuR 255 G 204 B 0R 255 G 130 B 0R 127G 16B 162R
163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R 170 G 15B 30R 0 G
0 B 0R 255 G 255 B 255Supporting colors:R 60 G 170 B 0Primary
colors:To change the document information in the footer, press [Alt
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Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Restriction Level Update
IntervalTable of ContentsAutomatic Access Class Restriction Level
Update IntervalAbbreviated name AutoACRLevelUpdIntDescriptionThe
parameter defines the time interval how often the access class
restriction level can updated in System Information broadcast SIB3
during automatic access class restriction. The trigger for the
automatic access class restriction is CN overload, RNC overload or
Cell specific UL overload. MOCRNACData typeNumberRange and
step10...600 s, step 1 sDefault value30 sMain MenuR 255 G 204 B 0R
255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G
234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting
colors:R 60 G 170 B 0Primary colors:To change the document
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Engineering / Rafal NowickiIdeally the value of AutoACRLevelUpdInt
is half of the value of the RNC-RestrictionIntervalConfiguration
ManagementNew Management Parameter Access Restriction for Cell_PCH
State UETable of ContentsAccess Restriction for Cell_PCH State
UEAbbreviated name AutoACRestForCellPCHDescriptionThis parameter
defines the threshold of access class restriction level. If the
access class restriction level goes above the threshold, when ever
UE becomes inactive RNC does not transfer UE to Cell_FACH or
Cell/URA_PCH but releases the UE to the idleMOCRNACData
typeNumberRange and step60...100 %, step 10 %Default value80 %Main
MenuR 255 G 204 B 0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R
104G 113 B 122R 234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255
B 255Supporting colors:R 60 G 170 B 0Primary colors:To change the
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Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Restriction Trigger of RNC
LoadTable of ContentsAutomatic Access Class Restriction Trigger of
RNC LoadAbbreviated name AutoACRTrigRNCLoadDescriptionThis
parameter defines the threshold for the RNC average unit load to
start access class restriction procedure in Radio Network
Controller. The RNC average unit load is determined by the S-RNTI
allocation failure rate in the UE traffic handling units of the
Radio Network Controller. The Trigger starts the automatic access
class restriction procedure in all of the cells in Radio Network
Controller. MOCRNACData typeNumberRange and step10...90 %, step 1
%Default value10 %The Minimum value (10%) triggers the Automatic
Access Class Restriction procedure in a minor RNC overload
situation. The Maximum (90%) value starts the procedure only in a
severe RNC overload.Main MenuR 255 G 204 B 0R 255 G 130 B 0R 127G
16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R 170 G
15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R 60 G 170 B
0Primary colors:To change the document information in the footer,
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Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Maximum Restriction LevelTable of
ContentsAutomatic Access Class Maximum Restriction LevelAbbreviated
name AutoACMaxRestLevelDescriptionThis parameter defines the
maximum number of Access Classes (AC0, AC1, ..., AC9) that are
restricted in a cell at the same time.
- 10% indicates that one Access Class is barred in a cell- 20%
indicates that two ACs are barred at the same time...- 90%
indicates that nine ACs are barred at the same timeMOCRNACData
typeNumberRange and step10...90 %, step 10 %Default value90 %All
ACs cannot be barred. Maximum restriction level is 90%Main MenuR
255 G 204 B 0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G
113 B 122R 234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B
255Supporting colors:R 60 G 170 B 0Primary colors:To change the
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# Nokia Siemens Networks 2013For internal useMBB CS Network
Engineering / Rafal NowickiConfiguration ManagementNew Management
Parameter Automatic Access Class Decrease Restriction Level
Hysteresis for NRT Queue Length TriggerAutomatic Access Class
Decrease Restriction Level Hysteresis for NRT Queue Length
TriggerAbbreviated name AutoACDecRestHysNRTQDescriptionThis
parameter defines the time period during which the averaged length
of the NRT scheduling queue must stay lesser than the threshold
value to update (decrease) the AC restriction level. In case of
overload state is over, AC restriction level is decreased more
frequently for low value and less frequently for high
valueMOCRNACData typeNumberRange and step5...60 s, step 1 sDefault
value20 sIn case of overload state is over, AC restriction level is
decreased more frequently for low setting and less frequently for
higher setting Main MenuR 255 G 204 B 0R 255 G 130 B 0R 127G 16B
162R 163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R 170 G 15B
30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R 60 G 170 B
0Primary colors:To change the document information in the footer,
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Engineering / Rafal NowickiPerformance AspectsNew Counter Access
Class Restriction Active SamplesTable of ContentsAccess Class
Restriction Active SamplesIdentifierM1000C404DescriptionThe number
of samples when access class restriction is active.Network element
nameACCESS CLASS RESTRICTION ACTIVE SAMPLESNetwork element
abbreviationACCESS_RESTR_ACTIVE_SAMPLESUpdatedThe counter is
incremented by value 1 when at least one access class is found as
blocked during the 30 second periodic checking cycle.Main MenuR 255
G 204 B 0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B
122R 234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B
255Supporting colors:R 60 G 170 B 0Primary colors:To change the
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Engineering / Rafal NowickiPerformance AspectsNew Counter Access
Classes Blocked AmountTable of ContentsAccess Classes Blocked
AmountIdentifierM1000C405DescriptionThe number of access classes
blocked due to access class restriction functionality. This counter
divided by M1000C404 provides the average number of blocked access
classes calculated over time when restriction has been
active.Network element nameACCESS CLASSES BLOCKED AMOUNTNetwork
element abbreviationACCESS_CLASSES_BLOCKEDUpdatedThe counter is
incremented by the number of barred access classes when at least
one access class is found as blocked during the 30 second periodic
checking cycleIf for example two classes are blocked for three
minutes duration, the counter gets value 12 because there are 6
samples during three minutesMain MenuR 255 G 204 B 0R 255 G 130 B
0R 127G 16B 162R 163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R
170 G 15B 30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R 60 G
170 B 0Primary colors:To change the document information in the
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Rafal Nowicki# Nokia Siemens Networks 2013For internal useR 255 G
204 B 0R 255 G 130 B 0R 127G 16B 162R 163 G 166 B 173R 104G 113 B
122R 234 G 234 B 234R 170 G 15B 30R 0 G 0 B 0R 255 G 255 B
255Supporting colors:R 60 G 170 B 0Primary colors:To change the
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Engineering / Rafal NowickiR 255 G 204 B 0R 255 G 130 B 0R 127G 16B
162R 163 G 166 B 173R 104G 113 B 122R 234 G 234 B 234R 170 G 15B
30R 0 G 0 B 0R 255 G 255 B 255Supporting colors:R 60 G 170 B
0Primary colors:To change the document information in the footer,
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