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Service specific load management

Service specific load management

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Service specific load management

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  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. IntroductionIn a Load Management Context Load measurement Determine traffic load in each individual cell • 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 information exchange Request and exchange load information between cells Load balancing action magnitude Determine the amount of offloading needed to balance load UE selection for load balancing action Determine and offload suitable UEs

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

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

  10. Feature Descriptionmom 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 requirementsSSLM part of LM features • As a prerequisite at least one of the following features shall be enabled and Operable. • FAJ 121 3009 (Inter-frequency Load Balancing) L12B • FAJ 121 3048 (IRAT Offload to WCDMA) L13B • FAJ 121 3061 (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 PARAMETERSINTRODUCED PARAMETERS EUTRAN UTRAN

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

  16. New counters & eventsSSLM observability • No new counters are introduced in this feature. • No new pmEvents are introduced. The following existing events are reused.

  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 scopetest 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 groups • Feature Activation • Mobility

  21. sslm test cases

  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.

  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.

  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.

  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