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Service specific load management. content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network.

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Presentation on theme: "Service specific load management. content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network."— Presentation transcript:

1 Service specific load management

2 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

3 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

4 Introduction In a Load Management Context ›The feature introduces enhanced control of the UE selection process for inter-frequency load balancing and IRAT offload to WCDMA. ›UE selection for Load Balancing action is based on UE services (QCI) Load measurement Determine traffic load in each individual cell UE selection for load balancing action Determine and offload suitable UEs Load information exchange Request and exchange load information between cells Load balancing action magnitude Determine the amount of offloading needed to balance load

5 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

6 Benefits benefits of sSLM The feature allows the operator to control how users are selected for load management action based on used service(s) Possibility to require better (target) coverage for users with a certain service (e.g. VoIP) to qualify for load-triggered – Similar support is available for coverage-triggered mobility as of L12A Possibility to inhibit users with a certain service (e.g. VoIP) from load-triggered handovers to a higher E-UTRAN frequency Possibility to inhibit users with a certain service (e.g. VoIP) from load-triggered handovers to a UTRAN frequency Possibility to require that a user has a certain service (e.g. VoIP) in order to qualify for load-triggered handovers to a UTRAN frequency

7 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

8 Feature Description SSLM new functionality in L14A › Possibility to apply an offset to the A4/B1 (IFLB/IRAT Offload threshold) depending on QCI (new in L14A) › Configurable offset per (frequency relation, QCI) › If a user has several bearers, the bearer which QCI has largest offset will apply › Possibility to exclude UEs from load balancing depending on QCI › Configurable per (frequency relation, QCI) › A QCI can be configured as forbidden from load-triggered handover › A QCI can be configured as required for load-triggered handover (new in L14A) If more than one QCI is configured as required then a user with at least one required QCI is qualified for load-triggered handover In case of conflict, forbidden overrides required › By default a QCI is allowed for load-triggered handover Such a QCI will not inhibit a load-triggered handover for a user with the QCI (it is neither forbidden nor required)

9 Feature Description SSLM voip example › Note that only load relations from one cell are illustrated Frequency Distance UTRAN cell E-UTRAN cells VoIP users are completely inhibited from IRAT offload to the UTRAN frequency The A4 threshold (required to qualify for load balancing action) for VoIP users is 3 dB higher to the higher E-UTRAN frequency No specific constraints for VoIP users to the lower E-UTRAN frequency

10 Feature Description mom structure › Impact on Parameters

11 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

12 Network requirements SSLM part of LM features › As a prerequisite at least one of the following features shall be enabled and Operable. › FAJ (Inter-frequency Load Balancing) L12B › FAJ (IRAT Offload to WCDMA) L13B › FAJ (Inter-frequency Offload) L14A

13 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

14 NEW PARAMETERS INTRODUCED PARAMETERS MO Level Parameter nameDescriptionRangeE// Default EUtranFreqRelationlbA4ThresholdRsrpOffsetQCI specific offset for the absolute threshold a4ThresholdRsrp used for load management Unit: 1 dB EUtranFreqRelationlbQciProfileHandlingSpecifies QCI profile handling with regard to load management ALLOWED, FORBIDDEN, REQUIRED ALLOWED EUtranFreqRelationqciProfileRefRefers to the QCI profile MO, QciProfilePredefined or QciProfileOperatorDefined. N/ANA UtranFreqRelationlbUtranB1ThresholdRscpOffsetQCI specific offset to the threshold b1ThresholdRscp used for load management Unit: 1 dB UtranFreqRelationlbQciProfileHandlingSpecifies QCI profile handling with regard to load management ALLOWED, FORBIDDEN, REQUIRED ALLOWED UtranFreqRelationqciProfileRefRefers to the QCI profile MO, QciProfilePredefined or QciProfileOperatorDefined. N/ANA EUTRANEUTRAN UTRANUTRAN

15 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

16 New counters & events SSLM observability › No new counters are introduced in this feature. › No new pmEvents are introduced. The following existing events are reused. EventEvent ParameterDescription INTERNAL_EVENT_LB_MEAS_UE EVENT_PARAM_FREQTarget frequency EVENT_PARAM_NR_OF_UES Number of UE that are selected to perform event A4 measurement on one target frequency INTERNAL_EVENT_LB_QUAL_UE EVENT_PARAM_NEIGHBOR_CGI CGI of neighbor target cells for which UE fulfilled event A4 criteria EVENT_PARAM_NR_OF_UESNumber of UE that fulfilled event A4 criteria MO Counter nameDescription Existing/New/ LevelModified EUtranFreqRelationpmLbMeasuredUe Records the number of UEs selected for measurements qualifying for load balancing action towards cells on the related frequency Existing UtranFreqRelationpmLbMeasuredUe Records the number of UEs selected for measurements qualifying for load balancing action towards cells on the related frequency Existing EUtranFreqRelationpmLbQualifiedUe Records the number of UEs qualified for load balancing action towards the related cell. Existing UtranFreqRelationpmLbQualifiedUe Records the number of UEs qualified for load balancing action towards the related cell. Existing

17 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

18 Network impact › No impact is expected from this feature

19 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

20 SSLM test scope test cases › Assumptions : › All test cases are executed with the following configuration :  All test cases are executed with 700MHz and 2100MHz band, not other band unless specifically specified in individual test cases.  All test cases are executed with 10MHz bandwidth by default unless explicitly stated by individual test cases › SSLM Test scope was divided in the following group s Feature Activation Mobility

21 sslm test cases Test Type TC Number Test DescriptionsLab/Field Feature Activation SSLM_01 Demonstrate the license handling and feature activation for Service specific load Management: ServiceSpecificLoadMgmt. Lab MOBILITYSSLM_02Verify IFLB for UE with REQUIRED QCI1Lab MOBILITYSSLM_03 Verify IFLB for UE with QCI1 REQUIRED with additional lbA4ThresholdRsrpOffset Lab MOBILITYSSLM_04 Verify IFLB for UEs with QCI1 FORBIDDEN, QC5 ALLOWED, QCI8 REQUIRED Lab MOBILITYSSLM_05 Verify IROW for UE with REQUIRED QCI8 and QCI FORBIDDEN Lab MOBILITYSSLM_06 Verify IROW for UE with REQUIRED QCI8 with additional lbUtranB1ThresholdRscpOffset Lab

22 sslm_IFLB_03 › Verify IFLB for UE with REQUIRED QCI1 with additional lbA4ThresholdRsrpOffset › Objective: To verify that UE with QCI1 is qualified for load balanced when the target measured cell has a better coverage i.e a4ThresholdRsrp + lbA4ThresholdRsrpOffset on QCI1 › Parameter Settings: › Pass/Fail Criteria: UE remains on source cell until VoLTE call is placed and target cell RSRP exceeds the total threshold (rsrp+offset) then UE moves to target cell. MOParametersGS valueTest Value Serving Cell eutranFreqToQciProfileRelation,QciProfilePredefined=qci1lbQciProfileHandling Required eutranFreqToQciProfileRelation,QciProfilePredefined=qci1lbA4ThresholdRsrpOffset 3 eutranFreqToQciProfileRelation,QciProfilePredefined=qci5lbQciProfileHandling Allowed eutranFreqToQciProfileRelation,QciProfilePredefined=qci8lbQciProfileHandling Allowed QciProfilePredefinedqciSubscriptionQuanta QCI 1: QCI 5:2 QCI 8:100 LoadBalancingFunctionlbCeiling200 LoadBalancingFunctionlbThreshold30 ReportConfigEUtraInterFreqLbhysteresisA410 ReportConfigEUtraInterFreqLba4ThresholdRsrp EutranCellRelationloadBalancing0 (Not Allowed)1 (Allowed) Neighbor Cell EUtranCellFDDcellSubscriptionCapacity20000 QciProfilePredefinedqciSubscriptionQuanta QCI 1: QCI 5:2 QCI 8:100 EutranCellRelationloadBalancing0 (Not Allowed)

23 sslm_IFLB_04 › Verify IFLB for UEs with QCI1 forbidden, QCI5 Allowed & QCI8 Required › Objective: Verify IFLB for UEs with QCI1 FORBIDDEN, QC5 ALLOWED, QCI8 REQUIRED › Parameter Settings: › Pass/Fail Criteria: UE remains on source cell until VoLTE call is terminated then UE moves to target cell. MOParametersGS valueTest Value Serving Cell EUtranCellFDDcellSubscriptionCapacity10000 eutranFreqToQciProfileRelation,QciProfilePredefined=qci 1 lbQciProfileHandling Forbidden eutranFreqToQciProfileRelation,QciProfilePredefined=qci 5 lbQciProfileHandling Allowed eutranFreqToQciProfileRelation,QciProfilePredefined=qci 8 lbQciProfileHandling Required QciProfilePredefinedqciSubscriptionQuanta QCI 1: QCI 5:2 QCI 8:100 LoadBalancingFunctionlbCeiling200 LoadBalancingFunctionlbThreshold30 ReportConfigEUtraInterFreqLbhysteresisA410 ReportConfigEUtraInterFreqLba4ThresholdRsrp EutranCellRelationloadBalancing0 (Not Allowed)1 (Allowed) Neighbor Cell EUtranCellFDDcellSubscriptionCapacity20000 QciProfilePredefinedqciSubscriptionQuanta QCI 1: QCI 5:2 QCI 8:100 EutranCellRelationloadBalancing0 (Not Allowed)

24 SSLM_IROW_06 › Verify IROW for UE with REQUIRED QCI8 with additional lbUtranB1ThresholdRscpOffset › Objective: To verify that UEs with QCI8 is qualified for offload when the target cell has a better coverage i.e B1Rscp + B1RscpOffset on QCI8 › Parameter Settings: › Pass/Fail Criteria: When target cell reaches B1 threshold + B1 offset UE will be moved to the target cell. MOParametersGS ValueTest Value Serving Cell EUtranCellFDDlbUtranOffloadThreshold 1 ExternalUtranCellFDDlbUtranCellOffloadCapacity LoadBalancingFunctionlbUtranOffloadBackoffTime 60 EUtranCellFDDcellSubscriptionCapacity eutranFreqToQciProfileRelation,QciProfilePredefined=qci8lbQciProfileHandling Required eutranFreqToQciProfileRelation,QciProfilePredefined=qci8 lbUtranB1ThresholdRscpOf fset 5 QciProfilePredefinedqciSubscriptionQuanta QCI 1: QCI 5:2 QCI 8:100 LoadBalancingFunctionlbCeiling200 LoadBalancingFunctionlbThreshold30 UtranCellRelationisHoAllowedfalsetrue ReportConfigInterLbUtranB1ThresholdRscp -100 UtranCellRelationloadBalancing 2 (OFFLOAD)

25 content Introduction Benefits Feature Description Network Requirements New Parameters New Counters and Events Network Impact SSLM Test Scope Summary

26 summary › The feature is an add-on to features Inter-frequency Load Balancing, Inter-RAT Offload to WCDMA and Inter-frequency Offload › OSS - CEX “Self Organized Networks” provides support for filtering out cells on a certain source frequency relation towards target frequency and apply the settings to all objects found.

27 THANK YOU


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