RAB Establishment -Radio Access Bearer-

Course ContentRadio Resource Management OverviewParameter ConfigurationCommon Channels & Power ControlLoad ControlAdmission ControlPacket Scheduling Handover ControlResource ManagerHSDPA RRM & parametersHSUPA RRM & parametersHSPA+ features & parametersR 255 G 211 B 8R 255 G 175 B 0R 127 G 16 B 162R 163 G 166 B 173R 137 G 146 B 155R 175 G 0 B 51R 52 G 195 B 51R 0 G 0 B 0R 255 G 255 B 255Primary colours:Supporting colours:146 B 155# Nokia Siemens Networks RN31675EN30GLA1# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission Control:Module ObjectivesAt the end of the module you will be able to:List the most important RB attributes, which are defined by Admission ControlDescribe in which way Eb/No can be configuredExplain the Admission Criteria for UL & DL in detailExplain the UL & DL power allocation mechanisms

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission Control Functional OverviewMaximises capacity whilst maintaining stability

Decides if new RAB request is admitted into UTRAN

AC tasks:A) Admission decisionRT connectionNRT connectionRRC connectionB) Definitions of Radio Bearer configuration, Transport Channels & Physical Channels configurationC) Outer loop power control OLPC configurationD) RL power allocationinitial, minimum & maximum transmission power

LCACNetwork based functionsPSRMRNC# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission Control Functional OverviewRAB assignment RRC already established

Core NWQoS parametersWRAB objectlook-up*EbNo, Quality targetWRAB Id 1EbNoOfCSNBAMR EbNoDCHOfCSNBAMR122 EbNoDCHOfCSNBAMRQua EbNoDCHOfCSNBAMRb EbNoDCHOfCSNBAMRc Service Rate-MatchingSite Specific ConfigurationNRT call always admitted with 0/0RT CS callDCH EbNo = service specificcell, WBTS specificThroughput and Powerincrease estimationsAdmission decisionUL/DL Transmit Power calculationsOuter Loop Power Control Initial SIR targetOKNOKtrigger RT over NRTtrigger Load Based AMR mode selectionBitrate UL/DLTraffic ClassSDU error ratio (ignored)21345* WCEL: EbNoSetIdentifierRABAssignmentRequestInitial parameters to establish the serviceAC# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Radio Access Bearer Single CallRU40QoS classRadio Access BearerPS Interactive / BackgroundPS I/B UL:DCH(8, 16, 32, 64, 128, 256, 384) / DL:DCH(8, 16, 32, 64, 128, 256, 384)PS I/B UL:DCH(16,64,128,384)/DL:HS-DSCHPS I/B UL:E-DCH/DL:HS-DSCH PS StreamingPS S UL:DCH(8,16,32,64,128)/DL:DCH(8,16,32,64,128,256)PS S UL:DCH(16,64,128)/DL:HS-DSCH(any rate)(not supported by NB/RSxxx via C-Iub)PS S UL:E-DCH(any rate)/DL:HS-DSCH(any rate)(not supported by NB/RSxxx via C-Iub) QoS classRadio Access BearerAMR MultimodeAMR 12.2AMR (12.2, 7.95, 5.90, 4.75)AMR (5.90, 4.75)AMR-WB (12.65, 8.85, 6.6)CS ConversationalCS C DCH:64/DCH:64CS StreamingCS S DCH(14.4)/DCH(14.4)CS S DCH(57.6)/DCH(57.6)RU20 HSPA:HS-DSCH: max. 42 MbpsE-DCH : max. 5.8 MbpsRU30 HSPA:HS-DSCH: max. 42 MbpsE-DCH : max. 11.5 MbpsRU40 HSPA:HS-DSCH: max. 84 MbpsE-DCH : max. 11.5 MbpsCS = circuit switchedPS = packet switchedC = conversationalS = streamingI/B = interactive/ background# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#CS = circuit switchedPS = packet switchedI/B = interactive/ backgroundC = conversationalS = streamingRU40QoS classRadio Access BearerSpeech + 1-3 PS Interactive / BackgroundPS I/B UL:DCH(0,8,16,32,64,128,256,384)/DL:DCH(0,8,16,32,64,128,256,384)PS I/B UL:DCH(16,64,128,384)/DL:HS-DSCH(any rate)PS I/B UL:E-DCH(any rate)/UL:HS-DSCH(any rate)Speech + PS StreamingPS S UL:DCH(8,16,32,64,128)/DL:DCH(8,16,32,64,128,256,384)PS S UL:DCH(8,16,32,64,128)/DL:HS-DSCH (not supported by NB/RSxxx via C-Iub)PS S UL:E-DCH/DL:HS-DSCH (not supported by NB/RSxxx via C-Iub)+ 0-3 PS Interactive / BackgroundPS I/B UL:DCH(0,8,16,32,64,128,256,384)/DL:DCH(0,8,16,32,64,128,256,384)PS I/B UL:DCH(16,64,128,384)/DL:HS-DSCHPS I/B UL:E-DCH/DL:HS-DSCHPS StreamingPS S UL:DCH(8,16,32,64,128)/DL:DCH(8,16,32,64,128,256,384)PS S UL:DCH(8,16,32,64,128)/DL:HS-DSCH (not supported by NB/RSxxx via C-Iub)PS S UL:E-DCH/DL:HS-DSCH (not supported by NB/RSxxx via C-Iub)+ 1/2/3 PS Interactive / BackgroundPS I/B UL:DCH(0,8,16,32,64,128,256,384)/DL:DCH(0,8,16,32,64,128,256,384)PS I/B UL:DCH(16,64,128,384)/DL:HS-DSCH(any rate)PS I/B UL:E-DCH(any rate)/DL:HS-DSCH(any rate)2/3 PS Interactive / BackgroundPS I/B UL:DCH(0,8,16,32,64,128,256,384)/DL:DCH(0,8,16,32,64,128,256,384)PS I/B UL:DCH(16,64,128,384)/DL:HS-DSCH(any rate)PS I/B UL:E-DCH(any rate)/DL:HS-DSCH(any rate)CS Conversational CS C UL:DCH(64)/DL:DCH(64)+ 1/2/3 PS Interactive / BackgroundPS I/B UL:DCH(8,16,32,64,128,256,384)/DL:DCH(8,16,32,64,128,256,384)(not supported by NB/RSxxx via C-Iub)(not supported by NB/RSxxx via C-Iub)(0-2PS I/B with NB/RSxxx via C-Iub)Multiple PS RBs always use the same transport channels!RAB Multi Call# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Radio bearer bit rate PSMaximum RB data rate is used in the admission decision & for DCH transport format definitionMaximum RB data rate is defined as the max. supported data rate that is equal to or smaller than the max. bit rate specified in the RAB attributesIf the max. data rate of the RAB attributes is smaller than the min. supported data rate, then the minimum supported data rate is used as the max. RAB data rate in the admission decisionThe supported data rates are defined byMaxBitRateDLPSNRT, MaxBitRateULPSNRT, HSDPAMaxBitrateULMinAllowedBitRateDL, MinAllowedBitRateULBitRateSetPSNRTThe bit rates listed in the set are the max. bit rates that can be allocated to NRT RAB.Any value not listed in the set are not allocated to any NRT RABsdiscussed in the sectionPacket Scheduler # Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#RAB Settings: Eb/NoOuter Loop Power Control is integral process within ACThe following calculations are performed:Block Error Rate (BLER) targets both for UL & DLQuality Target for the service / services in questions RAB specific planned Eb/No both for UL & DLDCH EbNos are used in power & throughput estimationsInitial value of UL SIR target for outer loop PC. UL outer loop power control starting valueUpper & lower limits for the UL SIR target.Allowed operation are for UL Outer Loop Power Control

Connection based Quality Control is name of this new concept in RRM

EbNo parameter implementation is changing in RU10Parameters can be configured by operator (WRAB object)Final DCH EbNo must be determined for throughput & power estimationsEb/No definable1) Service-specific 2) on Quality-Target3) on Rx-Diversity# Nokia Siemens Networks RN31675EN30GLA1Configuration of outer loop power controlAdmission control determines the following configuration parameters for the needs of the UL outer loop power control entity of the RNC: quality target, that is block error ratio target (target BLER) value, is produced for a DCH allocated for a RAB. initial value of UL SIR target, and upper & lower limits for the UL SIR target are produced.The quality target is produced also for the needs of the DL outer loop power control entity located in the user equipment. Configuration parameters are produced for an individual RRC connection each time dedicated resources are allocated or modified.

Connection based quality control parameters define the service and signaling bearer specific quality targets and their related power thresholds for each transport channel configuration. Besides of the bearer attributes, the values of the parameters can depend on the channel conditions such as propagation environment, multi path conditions, and mobile speed. Theparameters are stored in the Object WRAB of the RNW data base in the RNC.Up to 5 WRAB objects can be created by the operator to define the parameter sets of the quality control. Management parameter WRABId identifies each WRAB object uniquely in the RNC. The operator associates one of the objects with its parameter set to the BTS cell bydefining the identifier of the object with the cell specific management parameter EbNoSetIdentifier.For a subset of the management parameters related to the WRAB object, the modification of the parameter value requires reconfiguration of the BTS. This subset of parameters can only be modified if all those WCEL objects are locked that have an association to the WRAB object defined with the management parameter EbNoSetIdentifier.A WRAB object can only be deleted if it has no association to any WCEL object defined with the management parameter EbNoSetIdentifier.

RN31675EN30GLA1Admission Control#Eb/No: UL/DL Quality TargetService specific Quality Targets can be set with parametersParameter Database Object is WRAB; Examples:

For PS NRT IA/BG there can be 2 quality targets in operation dep. on bitrate:

Quality Target 1Quality Target 2Quality Target 1Quality Target 2Quality Target = log10 (BLER)Target 1: 0.01 (1%) 2: 0.05 (5%)EbNoDCHOfSRB34Qua: SRB 3.4 kbps; -6.3..0; 0.1; -2EbNoDCHOfSRB136Qua: SRB 13.6 kbps; -6.3..0; 0.1; -2EbNoDCHOfCSNBAMRQua: CS AMR NB; -6.3..0; 0.1; -2EbNoDCHOfCSWBAMRQua: CS AMR WB; -6.3..0; 0.1; -2EbNoDCHOfPSNRTPriQua: PS NRT IA/BG; -6.3..0; 0.1; -2EbNoDCHOfPSNRTSecQua: PS NRT IA/BG; -6.3..0; 0.1; -1.3Note (1) default value: only Quality Target 1 is usedNote (2) : Same parameter concept for Streaming services using DCHParameterRange & Step Default ValueEbNoDCHOfPSNRTSelQualDLBit 0, 1, 2, 3, 4, 5, 6: (8, 16, 32, 64, 128, 256, 384)kbps 127 (Dec)EbNoDCHOfPSNRTSelQualULBit 0, 1, 2, 3, 4, 5, 6: (8, 16, 32, 64, 128, 256, 384)kbps 127 (Dec)# Nokia Siemens Networks RN31675EN30GLA1Quality targetCell specific Admission Control reads both the UL DCH & DL DCH quality targets for the RAB from the RAB specific management parameter regardless of the values of the RAB attributes received from MSC: CS AMR speech: EbNoDCHOfCSNBAMRQua CS AMR-WB speech: EbNoDCHOfCSWBAMRQua CS transparent data: EbNoDCHOfCSDataTQua CS non-transparent data: EbNoDCHOfCSDataNTQua PS Interactive (IA) & Background (BG) services: The UL & DL DCH has one of the data rates 8, 16, 32, 64, 128, 256 or 384 kbps allocated as its max. DCH user data rate. Quality target of the UL DCH is set to the value of the management parameter EbNoDCHOfPSNRTPriQua, if the selector of the parameter EbNoDCHOfPSNRTSelQuaUL is set for the max. user bit rate of the DCH.. Quality target of the UL DCH is set to the value of the management parameter EbNoDCHOfPSNRTSecQua, if the selector of the parameter EbNoDCHOfPSNRTSelQuaUL is not set for the max. user bit rate of the DCH.. Quality target of the DL DCH is set to the value of the management parameter EbNoDCHOfPSNRTPriQua, if the selector of the parameter EbNoDCHOfPSNRTSelQuaDL is set for the max. user bit rate of the DCH.. Quality target of the downlink DCH is set to the value of the management parameter EbNoDCHOfPSNRTSecQua, if the selector of the parameter EbNoDCHOfPSNRTSelQuaDL is not set for the max. user bit rate of the DCH.RN31675EN30GLA1Admission Control#Service specific Eb/Nos (1/3)AC calculates DCH Eb/No from parameters in WRAB objectSite, Cell specific: Rx-diversity (N-branch Rx diversity) N = 1, 2, 4Service specific Eb/Nos for:SRB, AMR, CS Data, PS Data, CS Streaming, PS Streaming, EDCH StreamingEb/Nos are obtained for UL & DL separatelyBoth dedicated & signalling channels have their own targetsEb/Nos represent one-way reception in WBTS receiverExamples of service-specific Eb/No parameters:EbNoDCHOfSRB34: SRB with 3.4 kbps; WRAB; -11..20 dB; 0.1; 8 dBEbNoDCHOfSRB136: SRB with 13.6 kbps; WRAB; -11..20 dB; 0.1; 8 dBEbNoDCHOfCSNBAMR122: CS Narrowband AMR*; WRAB; -11..20 dB; 0.1; 8 dBEbNoDCHOfCSDataT/NT: CS Transparent / Non-Transparent; WRAB; -11..20 dB; 0.1; 8 dBEbNoDCHOfPSNRTPrim/Sec: Primary/Secondary quality target of PS I&B class RABs; WRAB; -11..22; 0.1; -8 dB / -6.5 dBEbNoDCHOfPSStrPrim/Sec: WRAB; -11..22; 0.1; -8 dB / -6.5 dB* Eb/N0 for the DCH which transfers the protection class A RAB sub-flow of the CS NB-AMR speech with the codec set (12.2) or set (12.2, 7.95, 5.9, 4.75).# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Service specific Eb/Nos (2/3)Example: Eb/No values for AMR 12.2

Example: Eb/No values for PS IA/BG services

Service TypeParameterRange and StepDefault valuePS IA/BGEbNoDCHOfPSNRTPrim-11..20 dB, step 0.1 dB8 dBEbNoDCHOfPSNRTSec-11..20 dB, step 0.1 dB6.5 dBWRAB Id 1Parent: EbNoOfCSNBAMR Children:EbNoDCHOfCSNBAMR122 EbNoDCHOfCSNBAMRb EbNoDCHOfCSNBAMRc Service TypeParameterRangeStepDefault valueAMR 12.2EbNoDCHOfCSNBAMR122-11..20 dB0.1 dB8 dBAMR 5.9EbNoDCHOfCSNBAMR59EbNoDCHOfCSNBAMRb*EbNoDCHOfCSNBAMRc*-11..20 dB-3..3 dB-3..3 dB0.1 dB0.1 dB0.1 dB8 dB-0.5 dB-1.0 dB* values of Eb/No expressed in relation to protection class A Eb/No values; parameters applied for UL & DL DCHs.# Nokia Siemens Networks RN31675EN30GLA1* These parameters defines the value of the planned Eb/No for the DCH, which transfers the protection class B / C RAB subflow of the CS NB-AMR speech with the codec set (12.2), (12.2, 7.95, 5.9, 4.75) or (5.9, 4.75). The value of the Eb/No is expressed in relation to the Eb/No value of the protection class A subflow DCH. The parameter is applied for the UL & DL DCHs.

RN31675EN30GLA1Admission Control#Service specific Eb/Nos (3/3): Eb/No Gain factorDepending on service Bitrate, EbNo gain factor can be applied by adjusting children parameters of parameter structure EbNoDCHRateGainHigher Bitrate experience better quality planned EbNo can be lowered:

Trigger for Rate Matching (EbNo) gain

Please note: Data rate gain is applied with the UL DPDCH data rates > 120 kbps. 715ULDL

-0.5 dB# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#DCH Eb/Nos: Antenna Solution / Rx-DiversityFinal planned EbNo value for further processing in Admission Control

EbNoCell is depending on site configuration:

Site specific parameter RxDivIndicator must be set according to the UL Rx-Diversity solution configured for that Node-B.

one-way ULtwo-way ULfour-way ULRxDivIndicatorWCEL; 1 antenna (0),2 antennas (1), 4 antennas (2)EbNoDCHRxDiv2; WRAB; -6 .. 0 dB; 0.1 dB; -3 dBEbNoDCHRxDiv4; WRAB; -6 .. 0 dB; 0.1 dB; -4 dB# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Planned initial SIR targets of the UL DPCCH Separate planned initial SIR targets are defined for the DPCCH in 3 different UL physical channel configurations for the needs of the outer loop power control

Initial SIR targets in the simple DPDCH configurations (no E-DPCH nor HS-DPCCH) are defined with a set of operator parameters: SIRDPCCHInitialDCHDPCH is the only UL physical channel configuration in this definitionInitial SIR targets in DPDCH + HS-DPCCH configurations (no E-DPCH) are defined with: SIRDPCCHInitialDCHHS HS-PDSCH is used with DPCH in ULInitial SIR targets in E-DPCH + HS-DPCCH configurations are defined with: SIRDPCCHInitialEDCH:HS-PDSCH is used with DPCH + E-DPCH in UL# Nokia Siemens Networks RN31675EN30GLA1Initial target SIR for UL DPCCHWhen the cell specific AC produces the initial SIR target of the UL DPCCH for the needs of the UL outer loop power control in the SRNC, it uses the 3GPP SIR value specified in 3GPP TS 25.215: Physical layer Measurements (FDD). The 3GPP SIR value is defined as the linear sum of the SIR values from all Rx diversity antennas for the radio link.The Rx diversity antenna specific value of the initial UL DPCCH SIR target depends on the actual UL physical channel configuration: When neither the E-DPCH nor the HS-DPCCH is configured in any radio link of the RRC connection, the value of the initial SIR target is defined with the SIRDPCCHInitialDCH4, SIRDPCCHInitialDCH8, SIRDPCCHInitialDCH16, SIRDPCCHInitialDCH32, SIRDPCCHInitialDCH64, SIRDPCCHInitialDCH128, SIRDPCCHInitialDCH256, SIRDPCCHInitialDCHRxDiv2, SIRDPCCHInitialDCHRxDiv4 & SIRDPCCHInitialDCHOffset parameter set of the Initial SIR target for UL DPCCH with DPDCH (SIRDPCCHInitialDCH) structured management parameter.Parameters are read from the WRAB object of the radio network database identified with the management parameter EbNoSetIdentifier.The initial SIR target depends on the size of the UL DPDCH minimum spreading factor and the used Rx diversity; a particular offset value can be defined with the SIRDPCCHInitialDCHOffset management parameter. When the HS-DPCCH is configured in the radio link, but the EDPCH is not configured in any radio link of the RRC connection, the value of the initial SIR target is defined with the SIRDPCCHInitialDCHHS4, SIRDPCCHInitialDCHHS8, SIRDPCCHInitialDCHHS16, SIRDPCCHInitialDCHHS32, SIRDPCCHInitialDCHHS64, SIRDPCCHInitialDCHHS128, SIRDPCCHInitialDCHHS256, SIRDPCCHInitialDCHRxDiv2, SIRDPCCHInitialDCHRxDiv4 and SIRDPCCHInitialDCHOffset parameter set of the Initial SIR target for UL DPCCH with DPDCH (SIRDPCCHInitialDCH) structured management parameter.Parameters are read from the WRAB object of the radio network database identified with the management parameter EbNoSetIdentifier.The initial SIR target depends on the size of the UL min. spreading factor and the used Rx- diversity; particular offset value can be defined with the SIRDPCCHInitialDCHOffset management parameter.RN31675EN30GLA1Admission Control#Initial UL SIR targets in simple DPDCH configurationsSIRDPCCHInitialDCH is a set of parameters, which define the initial SIR targets:Initial SIR value for each DPDCH SF value 256, 128, 64, 32, 16, 8 & 4, assuming 1-way Rx- diversity. Default values:

Initial SIR value in relation to the values of 1-way receiver diversity, assuming 2-way Rx-diversity. SIRDPCCHInitialDCHRxDiv2; WRAB; -6 .. 0; 0.1; -3 dB. Initial SIR value in relation to the values of 1-way receiver diversity, assuming 4-way Rx- diversity. SIRDPCCHInitialDCHRxDiv4; WRAB; -6 .. 0; 0.1; -4 dB.Receiver diversity is defined with the management parameter RxDivIndicator These SIR target values are used in producing the DPCCH overhead load factors and UL DPCCH/DPDCH power ratios of this configurationSF of DPDCH25612864321684Target SIR (dB)4.54.54.567.589# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Initial UL SIR targets in DPDCH + HS-DPCCH configurationsSIRDPCCHInitialDCHHS is a set of parameters, which define the initial SIR targets:Initial SIR value for each DPDCH SF value 256, 128, 64, 32, 16, 8 & 4, assuming 1-way Rx-diversity. Default values:

Initial SIR value in relation to the values of 1-way receiver diversity, assuming 2-way Rx- diversity. SIRDPCCHInitialDCHRxDiv2; WRAB; -6 .. 0; 0.1; -3 dB. Default value is 3 dB. Initial SIR value in relation to the values of 1-way receiver diversity, assuming 4-way Rx- diversity. SIRDPCCHInitialDCHRxDiv4; WRAB; -6 .. 0; 0.1; -4 dB. Default value is 4 dB. These SIR target values are used in producing the UL DPCCH/DPDCH power ratios for this configuration; DPCCH overhead load factors are defined from the initial SIR target values of the DPDCH configurations.

SF of DPDCH25612864321684Target SIR (dB)7.57.57.5910.51112HS-PDSCH used with DPCH in UL# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Initial UL SIR targets in the E-DPCH + HS-DPCCH configurations *RNC defines Initial SIR target values internally, there is no configurable parameter introduced yet These SIR target values are used in producing the UL DPCCH/DPDCH power ratios for this configuration; DPCCH overhead load factors are defined from the initial SIR target values of the DPDCH configurations. Initial SIR target values also used in configuring UL OLPC.

* HS-PDSCH used with DPCH + E-DPCH in ULMin. & Max. SIR targetsSIRDPCCHInitialDCHMinWRAB; -10..0; 0.1; -6 dBSIRDPCCHInitialDCHMaxWRAB; -10..0; 0.1; 6 dBE-DPCH not configured for the RRC connection:Max.imum SIR target value achieved by adding SIRDPCCHInitialDCHMax to the initial SIR targetMin.imum SIR target value achieved by adding SIRDPCCHInitialDCHMin to the initial SIR targetE-DPCH configuration RNC internal values :min.imum SIR target value: -3 -8.2...17.3; 0.1; 0 dBmax.imum SIR target value: 9 -8.2...17.3; 0.1; 10 dBMax. SIR TargetMin. SIR TargetSIR TargetInitial SIR TargetSF1-Rx2-Rx3 4-RxSF2566 dB3 dB2 dBSF1286 dB3 dB2 dBSF646 dB3 dB2 dBSF326 dB3 dB2 dBSF166 dB3 dB2 dBSF86 dB3 dB2 dBSF42xSF247 dB4 dB3 dB2xSF429 dB6 dB5 dB2xSF2+2xSF49 dB6 dB5 dB# Nokia Siemens Networks RN31675EN30GLA1Maximum & minimum values of the UL 3GPP SIR targetThe cell specific AC defines the max. & min. values of the UL 3GPP SIR target for the outer loop power control.If the E-DCH is not configured in any radio link of the RRC connection, the max. & min. values of the UL 3GPP SIR target are defined as follows: maximum values: (targetSIRDPCCH - offsetDCH) + SIRDPCCHInitialDCHMax minimum values: (targetSIRDPCCH - offsetDCH) + SIRDPCCHInitialDCHMinManagement parameters SIRDPCCHInitialDCHMax and SIRDPCCHInitialDCHMin are read from the WRAB object identified with the management parameter EbNoSetIdentifier.If the E-DCH is configured in a radio link of the RRC connection, the max. & min. values of the SIR target are defined internally by the cell specific AC as described in the RRM of HSUPA functional area description.RN31675EN30GLA1Admission Control#RLC Transfer ModeAC determines the UL & DL RLC transfer mode for RNC & UERLC transfer mode indicates, whether the RLC entity of a RB shall use an Acknowledged (AM), an Unacknowledged (UM) or a Transparent (TrM) Mode data transfer. Equal The same transfer mode is used in UL and DL for a RB. The transfer mode is determined from the RAB parameters and CN domain information.DCH/HS-DSCH E-DCH/HS-DSCHRT trafficConversationalStreamingInteractiveBackgroundAMRLCAMRLCTMRLCDCHRACH/FACHPS domainCS domainStreamingAMRLCTMRLCDCHDCHNRT trafficRT traffic# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#TrCH ParametersAC produces the TrCH parameters: Transport Formats (TF) Transport Format Combination (TFC) TFC identifiers

SupportedBitrates0TFCS (SL & RT RB)TrCh 1TFI0TFI1641283840TFI2384128Peak BitrateIn BearerParametersSheduledBitrateTFS for RT RBintermediateBitrates641280TFS subsetFor TFCSconstruction640TrCh 2TFI0TFI10640TFI1TFI0TFI0# Nokia Siemens Networks RN31675EN30GLA1TrCH ParametersIn UTRAN, the data carried at higher layers is carried over the air interface using transport channels mapped on to different physical channels.Transport Formats describe how Transport Channels are mapped to Physical channels at layer 1.The Transport Format is the format offered by L1 to MAC. MAC is responsible for mapping logical channels on to transport channels.MAC selects the appropriate TF within an assigned TFS for each active TrCH depending on the source rate (efficient use of transport channels), given the TFCS assigned by the RRC.

A Transport Format Combination is a combination of valid TFs that can be submitted simultaneously to layer 1 on a Coded Composite transport channel (CCTrCH)of a UE. Ie containing one TF from each TrCH that is part of the combination. Transport Format Combination Sets is defined as a set of TFC on a CCTrCH and is produced by a proprietary algorithm in the RNC. The TFCS is given to MAC by L3 for control. When mapping data to L1, MAC chooses between the different TFCs specified within the TFCSTransport Format Indicator (TFI) is a label for a specific TF within a TFS. It is used in the inter-layer communication between MAC and L1, each time a TBS is exchanged between the two layers on a transport channel.SL=signalling, RT RB = Real Time Radio Bearer

The PHY layer can multiplex several Transport Channels in one internal Transport Channel, called Coded Composite Transport Channel (CCTrCH). This CCTrCH can be transmitted on one or several physical channels. Consequently, the TFCSs of different Transport Channels can be found in one radio frame. The Transport Format Combination Set (TFCS) lists all allowed Transport Format Combinations (TFC). A Transport Format Combination Indicator (TFCI) is then used to indicate, what kind of Transport Format Combination is found on the radio frame. You can find TFCI-fields for instance in the S-CCPCH. The TFCS is set by the RRC protocol.

RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission control for NRT RABAC allocates a zero bit rate for the NRT RABPS allocates the bit rate to the radio bearer after reception of Capacity Request CRPS checks load and makes estimate of the load change

No power based decision is made in AC decision for NRT RAB

AC produces the TFS for NRT RBs based on RAB requirementsAC will check that the maximum bit rates requested in the RAB Assignment Request message are than operator configurable limits for the specific target cellQoS negotiation RAB bit rate is decreased to the cell maximum bit rateWCEL: MaxBitRateDLPSNRT and WCEL: MaxBitRateULPSNRT define the maximum allowed bit rates in a cellRange & steps: [8, 16, 32, 64, 128, 256, 320, 384] kbps, default: 384 kbps

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL Admission ControlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlStreaming Class for DCH & HSPA is supported from RU10 onwardsThere are different criteria checked depending whether Streaming Class is involved or not Semi-Controllable SC load introduced for Streaming servicesThe following pictures present principles of UL interference power division and of power division for DL side when there are just PS services mapped to HSDPA prior to RU10PmaxControllable loadNon-controllableload (PtxNC)Common channelsHSDPA NRTs DCH NRTsHSDPA streaming DCH StreamingDCH RT(excluding streaming)PtxTargetPtxTargetPSSemi-controllable loadSemi-controllable loadCommon channelsNoise powerDCH RT CSHSUPA NRTsDCH NRTsControllableloadNon-controllableload (PNC)PrxTargetPrxTargetPSHSUPA StreamingDCH PS StreamingSemi-controllable load (PSC)Prx,total = Prx_nc + Prx_SCsc + Prx_nrtPrx_nc,: powers of RT users (other than streaming) + other-cell users + noise# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlThe following pictures present principles of UL interference power division and of power division for DL side when there are service belonging to non-controllable load mapped to HSDPA from the RU10 onwardsOther cell interference Noise powerDCH CS dataHSUPA PS NRT DCH PS NRTControllableloadNon-controllableloadDCH PS streamingSemi-controllableload HS and DCH SL/CS AMRPrxTargetPrxTargetPSPrxTargetAMRPrxTargetMaxHSUPA PS streamingPrxMaxTargetBTSPmaxPtxNCDCH Common channelsHSDPA NRT DCH NRTHSDPA PS streaming DCH streamingDCH RT + SRBs(excluding PS streaming)PtxTargetHSDPA AMR +SRBsDCH PS streaming PtxNCHSDPAPtxCDCHPtxTargetTotmax

PtxHSDPA_stream

PtxTargetTotPtxTargetTotminPrx_nc,: powers of RT users (other than streaming) + other-cells + noisePrx_sc, consists of the powers of PS streaming users (DCH and E-DCH)# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Throughput thresholds in ULDCH & PS Streaming (NST) exampleUL Admission Control is hybrid solution based onPower estimations & Throughput* calculationsNoise RiseOwn Cell Load Factor (throughput)i-factor PrxOffsetMinimum throughput DCH & NSTPrxLoadMarginDCHPrxTargetPrxLoadMarginDCH; WCEL;: 0 .. 30; 0.1; 2dBdefault: 2 dB: equals 37% own cell loadMaximum throughput DCH & NST PrxLoadMarginMaxDCH PrxLoadMarginMaxDCHWCEL;: 0 .. 30; 0.1; 0dB = offNST = Non-Scheduled Transmission = PS Streaming on E-DCHNST is under RNC scheduling, but uses E-DCH-related physical channels including L1 retransmission* = Load# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Basic UL admission decision criteria for RT resource request (other Service than Streaming)If the load factor exceeds the specified minimum, the estimated non-controllable UL interference power is compared against the threshold If the equation is NOT fulfilled then the RAB can is NOT be admitted!Prx_target = PrxNoise + PrxTarget

Quantity L is the change in the RT DCH load factor of the RRC connection Calculated by RNC, based on service properties like bit-rate EbNo etc.PrxLoadMarginDCH:WCEL; 0..30; 0.1; 2 dB 1.585 LminDCH 37%PrxLoadMarginMaxDCH0..30; 0.1; 0 dB0 dB OFF / not usedRemember ?

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Basic UL admission decision criteria for an RT resource request (Streaming Service on DCH or HSPA)Streaming traffic is defined as semi-controllable load (sc)Semi-controllable load must be is considered separately

L = change in the own cell load factor of the PS streaming users representing the PS streamingLncEDCH, CELL is the own cell load factor of the non-controllable E-DCH load in the cell introduced Prx_SCsc = estimated received power increase caused by new PS streaming users (including also inactive RT DCH & PS streaming RBs Prx_total is the average received total non-controllable interference power Remember ?PrxLoadMarginDCH:WCEL; 0..30; 0.1; 2 dB 1.585 LminDCH 37%PrxLoadMarginMaxDCHWCEL; 0..30; 0.1; 0 dB0 dB OFF / not used

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#UL DCH load factor of the RRC connectionLoad factor LDPCH of the RRC connection:

W: chip rate 3.84 Mc/s(Eb/No)DCH: required Eb/No of the DCHRDCH: maximum DCH bit rateDCH: activity factor of the DCHFor every service (User Plane) allocated in the cell of question incl. streaming serviceLoad factor LDPDCH represents the DPDCH code power only; it does not nt include the DPCCH overhead part yet.Planned Eb/Nos are not including the DPCCH overhead.Load factor LDPCCH of the DPCCH is defined with the SIR and the spreading factor of the DPCCH SFDPCCH = 256.Planned SIR target value is used as the SIRDPCCH which defined with the management parameter SIRDPCCHInitialDCH

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#UL own cell DCH load factorUL DCH load factor LDCH,CELL of all DPCH users of the cell can now be produced as a sum

UL own cell DCH load factor LDCH,CELL is applied both for throughput and interference based DCH resource allocations in CRNC

Last but not least, The RNC also calculates the additional UL load coming from HS-DPCCH physical channel for each RRC connection having active HSDPA connection. Additional power is allocated for HS-DPCCH this power is received by WBTS receiver in the UL.

having all these data RNC can make the decision!

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#

UL Cell Load Admission Decision ProcessThis applies, if the minimum throughput threshold is exceededAdmission decision is then based on cell specific power & throughput thresholds given by RNPIn UL the total received wideband interference power measured from the wideband channel indicates the traffic load of the radio resourcesPower based admission decision criterion:is valid for RT bearers other than CS voiceor PS streamingThe Prx_nc is the estimated change in the received non-controllable interference power

powerloadmax planned loadmax planned power?

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Estimation of UL Prx_nc AC estimates the increase in the total non-controllable UL power of a cell using a proprietary estimation algorithm (next slide)

Estimation of the load increase, L, for that RAB is made based on bit rate, Eb/Nos etc.

L is mapped to an estimated value of the Prx_nc using a load vs. a power curve.

Change in load factor L is calculated by AC based on the new bearer Eb/No requirement.

The corresponding estimated new received Non-Controllable power is calculated by AC using integral method and using the Load vs. Prx_nc curves maintained by AC for every cellLL Prx_nc Prx_ncLoad factor

Current load L & current received Non-Controllable power Prx_nc are measured# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#ParametersWhen the non-controllable part of the cell load exceeds the target limit, AC will reject those RAB establishment requests that would mean immediate UL load increase (i.e. RT services) (not true for WPS call)PS responsible on handling NRT bearerWhen load is too high bit rates are decreased etc.When the PrxTarget level has been exceededIt is possible for the AC/PS to admit NRT services (AC)It is possible to schedule (allocate) bitrate for NRT servicesBitrate (load) increase for NRT is not possiblePrx_NCnc[dBm]PrxTotal[dBm]PrxNoise [dBm] + PrxTarget [dB]PrxNoise [dBm] + PrxTarget [dB] + PrxOffset [dB]Note: PrxTarget_BTS is defined as PrxTarget + PrxOffset PtxTarget_BS is defined as PtxTarget + Ptx OffsetFeasible Load AreaMarginal Load AreaOverload Area# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#?

Please check, whetherUL admission decision criteria fulfilled !Admission Decisions - Exercise (AMR voice call request) CASE 1 PrxTarget_BTSPrx_TargetPrx_NCncPrx_NCncControllable loadPrx_SCscLDCHminLmaxDCHLDCH,CELL- LDCH,STREAMING,CELL- LDCH,nrt,CELL+ L Lmax,DCHmaximumthroughputPower checkThroughput (DCH load) checkLDCH

NC&&Default for Lmax = 0-> Throughput based UL overload control is not in use.&& = AND functionSolution next slide# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Please check, whetherUL admission decision criteria fulfilled !Controllable loadAdmission Decisions - Exercise (AMR voice call request) CASE 2 Power check

LDCHminLmaxDCHLDCH,CELL- LDCH,STREAMING,CELL- LDCH,nrt,CELL+ LLmax,DCHmaximumthroughputThroughput (DCH load) checkLDCH

NC&&Default for Lmax = 0-> Throughput based UL overload control is not in use.solution of previous slide:RT RAB admitted (as well as NRT)?Solution next slidePrx_NCncPrx_NCncPrx_SCscPrxTarget_BTSPrx_Target# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Please check, whetherUL admission decision criteria fulfilled !Controllable load

LDCHminLmaxDCHLDCH,CELL- LDCH,STREAMING,CELL- LDCH,nrt,CELL+ LLmax,DCHmaximumthroughputThroughput (DCH load) checkLDCH

NC&&Default for Lmax = 0-> Throughput based UL overload control is not in use.Admission Decisions - Exercise (AMR voice call request) CASE 3 solution of previous slide:RT RAB admitted (as well as NRT)?Solution next slidePower checkPrxTarget_BTSPrx_TargetPrx_NCncPrx_NCncPrx_SCscPrx_SC# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Controllable loadAdmission Decisions - Exercise (AMR voice call request) CASE 4

LDCHminLmaxDCHLDCH,CELL- LDCH,STREAMING,CELL- LDCH,nrt,CELL+ L Lmax,DCHmaximumthroughputThroughput (DCH load) checkLDCH

NC&&Default for Lmax = 0-> Throughput based UL overload control is not in use.solution of previous slide:RT RAB admitted (as well as NRT)?Solution next slidePlease check, whetherUL admission decision criteria fulfilled !Power checkPrx_NCncPrx_NCncPrxTarget_BTSPrx_Target# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selectionsolution of previous slide:RT RAB rejected (NRT permitted)# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#DPCCH Initial Power / max. & min. UE Transmission Power After PRACH procedure the initial UL DPCCH transmit power is set by RRCWhen one or more RL already exist then the current UL transmission power is used as initial transmission power for new RL to be establishedEstablishing the first DPCCH the UE starts the UL inner loop power control at:

DPCCH_Initial_power = TxCPICH CPICH_RSCP + RTWP RxRSSI+ SIRDPCCH 10 log (SFDPCCH)TxCPICH: Primary CPICH Tx power PtxPrimaryCPICH RTWP RxRSSI : Received Total Wideband Power RTWP = MIN {Prx,total, Prx,total, Prx-Target}

SIRDPCCH: required received SIR for DPCCH = Initial DPCCH SIR targetSFDPCCH : Spreading Factor of the UL DPCCHCPICH_RSCP: UE measuredDPCCH_Power_offset = TxCPICH + RTWP RxRSSI + SIRDPCCH 10 log (SFDPCCH) is determined by AC/PS of RNC; its value is signalled to the UE in the UL DPCH power control info IE included in the RRC CONNECTION SETUP message

UEtxPowerMaxDPCHWCEL; -50..33; 1; 24 dBmUEtxPowerMaxPRACHWCEL; -50..33; 1; 21 dBmThe min. UE Tx power is defined in 3GPP TS 25.101: 6.4.3.1 Minimum UE output power: The min.imum output power shall be less than -50 dBm.UE Tx Power

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL Admission ControlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Estimation of DL Ptx_ncAdmission decision based on cell specific thresholds given by RNP (samesimilar as in UL)Each BTS measures the total DL Tx power (PtxTotal) of each cell, and reports the results to the RNC by using RADIO RESOURCE INDICATION messageBTS applies same process as UL for calculating averaged Ptx_Total valuesRNC applies sliding window averaging using WinAcCRabABSetupDlL to obtain average Ptx_TtotalPtx_total can be expressed as the sum of the power caused by the non-controllable traffic, Ptx_nc (excluding streaming services), the semi-controllable power Ptx_sc and the power caused by the controllable traffic of NRT users, Ptx_nrt:

Ptx_Total can be calculated in the same way similarly as Prx_TotalFor each RAB request AC has to estimate the increase in the total non-controllable transmission power (caused by the new RAB), Ptx_NCnc or Ptx_SCscAfter conversion of the abovementioned formula we obtain the Available Power for non-controllable load:

WinAcCRabABSetupDlLWBTS; 0..20; 1; 5 SchedulingPeriodsSchedulingPeriodWBTS; 50..2000; 50; 100 msPtx_nc = Ptx_total Ptx_nrt Ptx_SCsc

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Estimation of DL Ptx_nc For each resource request the AC calculates the change of DL load : Ptx_ncUnlike UL estimation, there is no load curve used to estimate the DL transmit power increase associated with a new RABThe increase in non-controllable power due to a new RT RAB, Ptx_nc, is calculated as the initial DL transmit powerThe initial DL transmit power is calculated as:

Ptx,CPICH: CPICH transmit power Ptx_Total: total DL Tx power reported by the Node B a: Downlink Orthogonality Factor DLOrthog DownlinkOrthog: WRAB; 0 .. 1; 0.01; 0.5 required Eb/No R: maximum transport channel user bit rate W: chip rate CPICH Ec/Io: UE measuredPtx,nc = Ptx_total Ptx_nrt Ptx_SCsc# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Estimation of DL Ptx_nc & Ptx_nc Admission Control calculates the Tx Power allocated for NRT services:

If an admitted resource request already exists for a RT bearer of another RRC connection but it is not yet visible in the measured power, its contribution to non-controllable transmitted power (Ptx_nc) or in the total transmitted carrier power (Ptx_sc) is considered to be equal to:

The estimated increase in total non-controllable power for a resource request is:

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#DL Cell Load Admission Criteria ThresholdsFor the RB to be established (non-streaming service requests) the increase of the non-controllable load Ptx_nc is estimated on the basis of the measured Then the estimated non-controllable DL power is compared against the threshold

Equation NOT satisfied RAB NOT admitted!

Ptx_nc = Ptx_total Ptx_sc Ptx_nrt

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Ptx_NCncRT RAB admitted (as well as NRT)DL Admission DecisionPtx_NCncPtx_Ttarget_BSPtx_TtargetCase ICase IIPtx_NCncPtx_NCncControllable loadControllable loadRT RAB admitted (as well as NRT)

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#RT RAB admitted(as well as NRT) DL Admission DecisionPtx_Ttarget_BSPtx_TtargetCase IVPtx_NCControllable loadControllable loadCase III

RT RAB denied(NRT RAB permitted) Ptx_NCncPtx_NCncPtx_NCnc# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#DL Cell Load Admission Criteria ThresholdsNo MAC-d flows established in the cell:

At least 1 MAC-d flow in the cell and HSDPA Dynamic Resource Allocation disabled:

At least 1 MAC-d flow in the cell and HSDPA Dynamic Resource Allocation enabled:

If there is not available power to admit new streaming users, the RT-over-NRT procedure is tried attempted where PS streaming user on DCH can take DL power used by existing NRT users.DCH carrying streaming service can be established admitted, if the condition describedin related situation is true:# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Initial DL Power Allocation RL setupWhen the RL is established (RRC connection setup) the following equation is used to defined the initial DL power

The determination of the Tx power requires knowledge about several parameter values:planned Eb/No of the connection (EbNoRM + EbNoCell)signal-to-interference ratio per chip of the CPICH ( ) measured by the UEW is the chip rate, R is bit rate, Ptx_total is measured by the base station (and reported back to the RNC in Radio Resource Indication)Ptx_,CPICH is the CPICH power (determined by PtxPrimaryCPICH) is the downlink orthogonality factor (WRAB: DLOrthog DownlinkOrthog: 01; 0.01; 0.5)

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Initial DL Power Allocation RL modificationWhen the RL is modified (RAB setup etc.) the initial DL power of the modified RL is calculated as

The planned Eb/No and bit rate R of the old & new DCH allocations are taken into account

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Initial DL Power AllocationExampleR = 64 kbit/s service with required DL Eb/No: 4.5dB = 2.82PtxCPICH: 303dBm = 2 W = 0.5Ptx_total = 37dBm = 5.011 WEc/Io (measured by UE) = -10dB = 0.1

Using the formula:

Initial DL Power is calculated: Ptx_init = 2.82*64/3840 (1/0.1 2W - 0.5 5.011W) = 822.5 mW (29.15 dBm)

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#PCrangeDLRNC; 0..25; 1; 1520 dBDL power allocation of a radio link+ PtxDPCHMax- CPICHtoRefRABOffset+ PTxDPCHminWCEL; -60..-28; 1; -28 dBIn most cases we are operating in this range for voice. For PS data the PtxDLabsMax can be lower than the upper limit dictated by thisPtxDLabsMax (PS NRT) & PtxPSstreamAbsMax (PS RT)setting max. power for radio link; own parameter for PS NRT RAB & PS RT RABPtxPrimaryCPICHWCEL; -10..50; 0.1; 33 dBmPtxCellMax max. Tx power of the cellPtxPrimaryCPICHCPICHtoRefRABOffsetWCEL; -10..17; 0.5; 20 dBPtxDLabsMaxWCEL; -10..50; 0.1; 37 dBmPtxPSstreamAbsMaxWCEL; -10..50; 0.1; 37 dBmPtxCellMaxWCEL: 050; 0.1; 43dBmPtxDPCHMaxWCEL; -3..0; 0.1; -3 dBThe max. DL power is the lowest of these 3 values for NRT & Multi-RABThe min. DL power is the max. of these value+ SF_adjustment# Nokia Siemens Networks RN31675EN30GLA1Radio Link established or modified both max. DL Tx power & min. DL Tx power has to be determined for it.The average power of transmitted DPDCH symbols over 1 timeslot must not exceed maximum DL Tx power, or it can not be below minimum DL Tx power.The Power Control Dynamic Range of BTS is the difference between the max. and the min. transmit output power of a code channel.

RN31675EN30GLA1Admission Control#How it is actually doneDefine maximum radio link power:RT: Ptx_max_rl = min {P_CPICH - CPICHtoRefRABoffset + SF_adjustment, Ptxtotalmax - PTxDPCHmax}PS & Multirab: Ptx_max_rl = min{P_CPICH CPICHtoRefRABoffset + SF_adjustment, Ptxtotalmax - PTxDPCHmax, Ptx_AbsMax}Define minimum radio link power:Ptx_min_rl=max{Ptx_max_rl - PCrangeDL, Ptxmax - PTxDPCHmin}

SF_adjustment is the mapping of the max power to the actual bearer based on SF and DL Eb/No compared to the reference service* (12.2 kbps AMR)

When the radio link includes multiple bearers then the numerator of this equation includes the sum of the Eb/No, bit rate products for all bearersRefServForCodePowerWCEL;0: CS AMR 12.2 kbps1: CS AMR 12.65 kbps...6: PS interactive 384 kbps# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Value of Ptx_AbsMax is defined as follows:PS NRT RABPtx_AbsMax = PtxDLAbsMaxPS RT streaming RABPtx_AbsMax = PtxPSstremAbsMaxPS streaming DCH with PS NRT DCH (PS RT&NRT multirab), whenPtxDLAbsMax PtxPSstreamAbsMaxPtx_AbsMax = PtxDLAbsMax PtxDLAbsMax > PtxPSstreamAbsMax NRT DCH bit rate shall be scheduled so that maximum allowed code power does not exceeds the value Ptx_AbsMax achieved from the equation below

RT(RL) = set of RT DCHs of RL NRT(RL)= the set of the NRT DCHs of RL RDCH is the maximum bit rate of the DCH EbNoDCH is the planned Eb/No DL Ptx_AbsMax for RL# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Maximum & Minimum DL Ptx of the Radio LinkExample64 kbit/s CS Data service multiplexed with a 3.7 kbps SRB:64 kbps service DL Eb/No: 4.5 dB =2.823.7 kbps SRB DL Eb/No: 8.0 dB = 6.31Reference service: 12.2kbit/s speech with Eb/No: 5.5 dB = 3.55CPICHtoRefRabOffset = 2 dBPtxCPICH: 33 dBmSF_Adjustment = (2.82*64 + 6.31*3.7)/(3.55*12.2) = 4.71 = 6.7 dBPtxCPICH - CPICHtoRefRabOffset = 33 dBm - 2 dB = 31 dBmPtx_DPCH_max = PtxDPCHMax =3dB below the maximum power = 40dBmPtx_max_rl = min(31+6.7 dBm, 40 dBm) = 37.7 dBm = 5.9 WPtx_max = 37.7 dBmPtx,range = PCrangeDL = 1520dBPtx_DPCH_min = PtxDPCHMin = 28dB below the maximum power = PtxCellMax PtxDPCHMin = 43dBm 28dB = 15dBm Ptx_min_rl = max(37.7 dBm 1520dB, 15dBm) = max(2217.7dBm, 15dBm) => Ptx_min_rl = 2217.7 dBmMaximumDL PtxMinimumDL Ptx# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Resource allocation of radio, Iub and WBTS resources1 - Radio & Code resourcesAC makes admission decision based on radio resources availabilityResource manager allocates code resources

2 - WBTS resourcesWSP resource are allocated during the Radio link setup & reconfiguration procedureNBAP: RADIO LINK SETUP FAILURE message used to indicate resources shortage

3 - Iub resourcesThe AAL2 connection resources are allocated and released by CAC (Connection Admission Control) based on radio layer capacity request

# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Resource allocation at RAB setupRadio Link Reconfiguration CommitAAL2SIG:ERQRAB Assignment RequestFacilityCall ProceedingSetupUERNCMGWNode BRRC Connection EstablishmentRadio Link Reconfigure PrepareRadio Link Reconfigure ReadyAAL2SIG:ERQAAL2SIG:ECFFP: DL SyncFP: UL SyncAAL2SIG:ECFRadio Bearer SetupRadio Bearer Setup CompleteAuthentication & Security mode1 AC, RM3 RNC CAC2 RL reconf3 - BTS CAC# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Resource allocation at RAB setupACCAC/AAL2NBAP1 Radio resources3 Iub resources2 WBTS resourcesRM1 Code resourcesCAC: Connection Admission Control# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission Control in case of CongestionCongestion can happen in UTRAN logical & physical resourcesRadio resources (UL interference, DL power)Spreading codeBTS hardwareIub, Iur transmission resourcesRNC HW capacity

In the first 4 cases, forced data rate downgrades or releases can be applied to arrange capacity for an arriving resource request, the available features are:RT over NRT featureRT RAB pre-emption# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#RT over NRT featureEstablishment of a conversational or streaming (RT) RAB requires that resources from the NRT are removed

Triggered by:Resource request for an RT RABResource request for an RRC connection setup to establish RT RAB or signaling:IE establishment cause of the RRC Connection Request message is "Registration", "Detach", "Originating High Priority Signaling", "Terminating High Priority Signaling", "Inter-RAT cell re-selection", "Inter-RAT cell change order", "Originating Conversational Call", "Terminating Conversational Call", "Originating Streaming Call", "Terminating Streaming Call, or "Terminating - cause unknown or Emergency Call

Actions: Downgrade NRT RAB/DCH resources

Target RAB: RAB with highest maximum bit rate# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#RT RAB pre-emptionRT RAB pre-emption is triggered when it is not possible to establish a prioritiszed RAB without releasing lower priority RT bearersTriggered byPrioritiszed RABAllocation/Retention Priority: may trigger pre-emptionBy default in NSN CN only Emergency CallsResource request for an RRC connection setup to establish emergency callIE establishment cause of the RRC Connection Request message is Emergency callActionsRelease DCH allocation of the target RABTargetPre-emption vulnerability indicator of the RAB attribute Allocation/Retention priority is set to "pre-emptable Default all calls but not emergency callsRABs with lower Allocation/Retention priority level# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Resource hunting and frozen resourcesWhen congestion of a resource is experienced, the SRNC will reattempt to hunt and reserve the resource for a prioritised or real-time service resource requestRe-attempt is done immediately when the hunting procedure has finished with a failure indicationThe number of re-attempts is defined with RNC configuration parameter Re-attempts to hunt resourcesRNCRNAC: MaxNumberOfReAttemptsCongRange & step: 1..10, step 1Default value: 2 (As a default RNC performs a maximum of two re-attempts)In case of congestion of a BTS, cell or Iub the resources question are frozenRNC blocks new establishments to & from this BTS, cell or Iub until all the needed resources are hunted for this particular resource requestAfter that the BTS, cell or Iub is defrostedThe resources are defrosted latest after Maximum freezing time defined by RNC: MaxFreezingTime parameter (default 3 sec.)OK# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission Control for RT and NRT During SHO branch addition is possible in the case when total DL load is less than the overload threshold, valid both for RT and NRT traffic NRTRRC connection setupRAB setupRRC connection request is not rejected either for received wide band power or transmitted power reasons

RT over NRT & pre-emption procedure can be appliedAdmitted if NCT load < target threshold

RT over NRT pre-emption procedure can be appliedEmergency callRTAdmitted if NCT load < target threshold*Admitted if non-controllable load added by estimated change is below target

If NCT load added by estimated change is above target, RT RAB pre-emption procedure can be applied.

In case of congestion, RT over NRT procedure can be applied.

Admitted always at 0 bit rate, capacity requests scheduled by PS* valid up to RAN04; from RAS05 on: always # Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission ControlAC Functional OverviewRB attribute definitionNRT bearer admission decisionUL admission controlPower allocation in ULDL admission controlPower allocation in DLIub, WBTS and code resource reservationLoad based AMR Codec Mode Selection# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Load based AMR Codec Mode SelectionLoadMaximum loadOverload thresholdTarget thresholdUnderload thresholdIf at least 1 load indicator exceeds its own overload threshold, then AMR codec mode set {12.2, 7.95, 5.9, 4.75} is downgraded to mode set {5.9, 4.75}If no load indicator exceeds the underload threshold, then AMR codec mode set {5.9, 4.75} is upgraded to mode set {12.2, 7.95, 5.9, 4.75}New calls use low codec modes (existing not affected)New calls use high codec modes (existing not affected)RNCRNAC: AMRLoadTxPowerRange: 0 = PtxTotal, 1 = PtxNCtotal, 2 = PtxNonHSPA; Default: 1 = PtxNCtotalThresholds for PtxNCtotal depend on PtxTarget as follows: Overload threshold = PtxTarget + AMROverTxNC (-15..+15; 0.1; -1 dB) Target load threshold = PtxTarget + AMRTargetTxNC (-15..+15; 0.1; -2 dB) Underload threshold = PtxTarget + AMRUnderTxNC (-15..+15; 0.1; -10 dB)further parameters (e.g. for PtxTotal; PtxNonHSPA): Slide 105/106; all parameters: WCELLoadBasedAMRCodecMode;RNCRNAC; Disabled (0), Enabled (1);OKOKOK# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Load based AMR Codec Mode Selection

AMRSFWCEL; -30 .. 0; 1; -2 dBSC:= Load in Spreading code domain RNC first selects downgrade victim by Allocation Retention Priority (highest ARP value first) Second selection is based on allocation time (shortest time is downgraded first)# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#For the ongoing calls, the AMR codec mode change is applied gradually to avoid sudden signalling peaks caused by the Radio Link Reconfiguration procedures.The AMR codec mode set {5.90, 4.75} with a 3.4 kbit/s SRB bit rate allows the usage of SF256 in DL instead of SF128At the radio interface, a somewhat higher energy per bit is required for the AMR 5.9 kbps than for AMR 12.2 kbps due to difference in SFThe AMR codec mode 5.9 on SF256 consumes more Tx power than AMR 5.9 on SF128. Therefore, if RL Tx power exceeds a predefined threshold and if a SF on SF128 is available, SF128 is used.

Load based AMR Codec Mode Selectionfrom: DN0423863Load based AMR Codec Mode Selection: ParametersLoadBasedAMRCodecMode; Disabled (0), Enabled (1); Usage of Load based AMR codec mode selectionAMRLoadTxPower; RNCRNAC; PtxTotal (0), Ptxnctotal (1), PtxnonHSPA (2); Indicator for DL radio power load; selects power quantity AMRSF; WCEL; -30 .. 0; 1; -2 dB; offset which is used to calculate threshold for code power. Threshold is calculated by adding parameter to maximum DL transmission power of the call. Load based AMR Codec Mode Selection feature uses the threshold when selecting SF for lower codec mode AMR calls.# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Admission Control (AC) SummaryRB informationResource informationActive set informationLoad change informationTarget BLER, BER & SIR Load informationAdmission ControlRAB admission decisionLoad change estimationProducing L2 parametersProducing TFSDL power allocationIuPacket SchedulerRadio resource schedulingLoad ControlProducing of load informationPower ControlUL Outer loop power controlHandover ControlActive state mobility controlResource ManagerRadio resource informationCode allocationTransport resource allocationResource requestRAB setup/modify/release requestLoad information# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#Version controlVersionDateStatusOwnerRAS051_v1.01.10.2006RAS051 levelFlorian ReymondRAS051_v1.126.4.2007Correction of supported bearers, correction of QoS negotiation; Minor corrections (B. Aschermann)Florian ReymondRAS06_v0.112.09.2007Draft update to RAS06 (B. Aschermann)RAS06_v1.026.10.2007Review and some minor changes (J. Itkonen)Florian ReymondRU10_v1.028.11.2008Averaging unclear to me; Final Number of slides for RAB combi. Document Number must be changedThorsten HagedornRU10_v0.114.08.2009RU10 level, RANPAR Combined version (A. Annen)Florian ReymondRU10_v1.014.08.2009RU10 level, RANPAR Combined version (A. Annen)Benedikt AschermannRU20_v1.031.12.2009RU20 level, RANPAR Combined (Andreas Annen)Benedikt AschermannRU30_v1.208.04.2011RU30 level, RANPAR Combined (Andreas Annen)Benedikt AschermannRU40_v1.031.11.2012RU40 level update (Rafal Nowicki)Benedikt Aschermann# Nokia Siemens Networks RN31675EN30GLA1RN31675EN30GLA1Admission Control#