huawei wcdma rno parameters optimization

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Parameter Optimization Review Parameter optimization is an important step after RF Optimization. Parameter optimization improves service quality and utilization of network resources. Review New Sites IntergratedSingle Site VerificationCluster of Sites ready?RF OptimisationServices Testing & Parameter OptimisationRegular Reference RouteTesting & Stats AnalysisRe- optimisation Needed?YESNOYESNOObjectives Understand the process of parameter optimization Master the contents of parameter optimization Upon completion of this course, you can: Contents Parameter optimization procedure Parameter optimization contents Parameter Optimization Process Data Input and Find ProblemsVerify Parameter Problems Other Process Classify Parameter ProblemsDetermine Parameter Values to be Modified and List MML Commands Evaluate Changing Effects Prepare Test Plan and Implement ChangingTest , Get Data again and CompareProblems Eliminate Or Need not Change moreEndDetermine whether ChangingEndNNYYYNData Input and Find Problems Data InputDrive Test DataKPI Network Statistic DataNetwork Tracing MessageNetwork Warning Information ProblemsFind problems from the input data, such as: Low success rate of call setup Low success rate of handover High rate of call drop Verify Parameter Problems Parameter ProblemsNo RF ProblemsNo Hardware/Software Problem Related with EnvironmentOr SpeedParameters never OptimizedBeforeParameter Classification Mobile Management Parameters Power Control Parameters Power Configuration Parameters Load Control Parameters Other Parameters Determine Parameter Values List the form for changing parameters (original parameter values vs. new parameter values) List MML commands for changing parameters Note: Maybe some tradeoff considerations need to be considered to assure the maximal improvement in the whole view such as coverage and capacity, fast and stable, improvement and risk, cost (or efforts) and gain. Impact Impact on customer service and other networks Impact on OMC (efforts, maintenance) Prepare Test Plan and Change Parameters Prepare test schedule, routes, tools and be ready to get Information. Change parameters and make records. Course Contents Parameter optimization Procedure Parameter optimization Contents Parameter Optimization Contents Mobile Management parameter optimization Power Control parameter optimization Power Configuration parameter optimization Load Control parameter optimization Note: There are too many parameters to introduce. Only some parameters about network optimization are mentioned here and maybe more parameters need to be added in the future. Mobile Management Parameter Optimization Cell Selection & Reselection The changing of cell on which UE camped in idle mode or in Cell FACH, Cell PCH, URA PCH states. That assures UE camping the most suitable cell, receiving system information and establishing an RRC connection on a best serving cell. Handover The changing of cells with which UE connected in DCH mode. That assures seamless coverage and load balancing. Cell Selection & Reselection Procedure InitialCell SelectionAny CellSelectiongo herewhen noUSIM inthe UEUSIM insertedCamped onany cellgo here whenever anew PLMN isselected1no cell informationstored for the PLMNcell informationstored for the PLMNStoredinformationCell Selectionno suitable cell foundno suitablecell foundCell Selectionwhen leavingconnectedmodesuitable cell found 2suitablecell foundCampednormallysuitable cell foundno suitablecell foundleaveidle modereturn toidle modeConnectedmodeCellReselectionEvaluationProcesssuitablecell foundtriggerno suitablecell found1Cell Selectionwhen leavingconnectedmodeno acceptable cell foundacceptablecell foundacceptablecell foundsuitablecell found 2leaveidle modereturn toidle modeConnectedmode(Emergencycalls only)CellReselectionEvaluationProcessacceptablecell foundtriggerno acceptablecell foundNAS indicates thatregistration on selectedPLMN is rejected(except with cause #14or #15 [5][16])Cell Selection Criteria (S Criteria) The cell selection criterion S is fulfilled when: for FDD cells: Srxlev > 0 AND Squal > 0 for TDD cells: Srxlev > 0 Where: Squal = Qqualmeas QqualminSrxlev = Qrxlevmeas - Qrxlevmin - PcompensationWhen a UE wants to select a UMTS cell, the cell must satisfy S criterion. Cell Selection Parameters Cell Re-selection Measure Condition Use Squal for FDD cells and Srxlev for TDD for Sx 1. If Sx > Sintrasearch, UE need not perform intra-frequency measurements. If Sx Sintersearch, UE need not perform inter-frequency measurements. If Sx SsearchRAT m, UE need not perform measurements on cells of RAT m". If Sx + =MNew : the measurement result of the cell entering the reporting range. CIONew : the individual cell offset for the cell entering the reporting range if an individual cell offset is stored for that cell. Otherwise it is equal to 0. Mi : measurement result of a cell not forbidden to affect reporting range in the active set. NA : the number of cells not forbidden to affect reporting range in the current active set. MBest : the measurement result of the cell not forbidden to affect reporting range in the active set with the highest measurement result, not taking into account any cell individual offset. W : a parameter sent from UTRAN to UE. R1a : the reporting range constant. H1a : the hysteresis parameter for the event 1a. Soft Handover Event 1B 1B (Remove a cell from Active Set) ) 2 / ( 10 ) 1 ( 10 101 11b b BestNii Old OldH R LogM W M Log W CIO LogMA+ +||.|

\| s + =MOld : the measurement result of the cell leaving the reporting range. CIOOld : the individual cell offset for the cell leaving the reporting range if an individual cell offset is stored for that cell. Otherwise it is equal to 0. Mi : measurement result of a cell not forbidden to affect reporting range in the active set. NA : the number of cells not forbidden to affect reporting range in the current active set. MBest : the measurement result of the cell not forbidden to affect reporting range in the active set with the lowest measurement result, not taking into account any cell individual offset. W : a parameter sent from UTRAN to UE. R1b : the reporting range constant. H1b : the hysteresis parameter for the event 1b. Soft Handover Event 1C 1C (a non-active primary CPICH becomes better than an active primary CPICH. If Active Set is not full, add the non-active cell into active set .Otherwise use the cell substitute the active cell.) 2 / 10 101c InAS InAS New NewH CIO LogM CIO LogM + + > + MNew : the measurement result of the cell not included in the active set. CIONew : the individual cell offset for the cell becoming better than the cell in the active set if an individual cell offset is stored for that cell. Otherwise it is equal to 0. MInAS : the measurement result of the cell in the active set with the highest measurement result. MInAS : the measurement result of the cell in the active set with the lowest measurement result. CIOInAS : the individual cell offset for the cell in the active set that is becoming worse than the new cell. H1c : the hysteresis parameter for the event 1c. Soft Handover Event 1D 1D (Change of best cell. If the chosen cell is not in Active Set, add the cell into Active Set and modify measurement control .Otherwise only modify measurement control. ) 2 / 10 101d Best Best NotBest NotBestH CIO LogM CIO LogM + + > + MNotBest : the measurement result of a cell not stored in "best cell" CIONotBest : the cell individual offset of a cell not stored in "best cell" . MBest: the measurement result of the cell stored in "best cell". CIOBest : the cell individual offset of a cell stored in "best cell" . H1d : the hysteresis parameter for the event 1d. Soft Handover Parameters Parameter Name Description Default Setting IntraRelThdFor1A Relative thresholds of soft handover for Event 1A (R1a) 10, namely 5dB (step 0.5) IntraRelThdFor1B Relative thresholds of soft handover for Event 1B (R1b) 10, namely 5dB (step 0.5) Hystfor1A, Hystfor1B, Hystfor1C, Hystfor1D Soft handover hysteresis (H1x) 6,namely 3dB (step 0.5) for H1a . 8,namely 4dB(step 0.5) for H1b, H1c,H1d. CellIndividalOffset Cell CPICH measured value offset; the sum of this parameter value and the actually tested value is used for UE event estimation. (CIO) 0 WEIGHT Weighting factor, used to determine the relative threshold of soft handover according to the measured value of each cell in the active set. 0 TrigTime1A,TrigTime1B, TrigTime1C,TrigTime1D Soft handover time-to-trigger parameters (event time-to-trigger parameters. Only the equation are always satisfied during the trigger time, the event will be triggered). D640, namely 640ms . FilterCoef Filter coefficient of L3 intra-frequency measurement D5,namely 5 Inter-system Handover CS Domain Procedure UE 1. RRC Connect Req 15. RAB Assign Req NODEB RNC 3G MSC BSS 2G MSC 2. RRC Setup Complete 3. Measure Control (measure ID 0x1 ) 4. Measure Control (measure ID 0x2 ) 5.Initial UE message(service request) 6.DL DT (Authentication Request) 7.UL DT (Authentication Response) 8.Common ID 9. Security Mode Command 10. Security Mode Command 11. Security Mode CMP 12. Security Mode CMP 13. UL DT(Setup) 14. DL DT(Call proceeding) 17.RL Recfg Ready 21 RAB Assign Resp 20 RB Setup Cmp 19 RB Setup 16.RL Recfg Prep 18.RL Recfg Commit 22. DL DT( Alerting ) 23. DL DT( Connect) 24. UL DT(Connect Ack) 26.RL Recfg Prep 28 PhyCh Reconfig 29.RL Recfg Comit 27.RL Recfg Ready 30 PhyCh Reconfig CMP 31 Meaure Control(ID3 ) 32Measure Repo