47025687 RAN Network Optimization Parameter Reference RAN6 1

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RAN 6.1

Network Optimization Parameter Reference

Issue Date Part Number

01 2007-08-30

Huawei Technologies Proprietary


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Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any assistance, please contact our local office or company headquarters.

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RAN Network Optimization Parameter Reference

Contents

ContentsAbout This Document.....................................................................................................................1 1 Power Control Parameters........................................................................................................1-11.1 Uplink Power Control Parameters...................................................................................................................1-2 1.1.1Power Offset Between Access Preamble and Message Control Part.....................................................1-4 1.1.2 PRACH Initial Transmit Power Constant..............................................................................................1-5 1.1.3 PRACH Power Ramp Step.....................................................................................................................1-6 1.1.4 Maximum Preamble Retransmit Attempts.............................................................................................1-6 1.1.5 MaximumPreamble Loop......................................................................................................................1-7 1.1.6 Default DPCCH Transmit Power Constant............................................................................................1-8 1.1.7 Maximum Allowed Uplink Transmit Power ofthe UE.........................................................................1-8 1.1.8 RRC/HHO Process SRB Delay.............................................

...............................................................1-10 1.1.9 RRC/HHO Process DPCCH Power Control Preamble Length...................................

.........................1-11 1.2 Downlink Power Control Parameters.............

................................................................................

...............1-11 1.2.1 Maximum Downlink Transmit Power of the Radio Link.....

...............................................................1-13 1.2.2 Minimum Downlink Transmit Power of the Radio Link.....................................................................1-14 1.2.3 Cell PCPICH Transmit Power..............................................................................................................1-15 1.2.4 Maximum PCPICH Transmit Power....................................................................................................1-16 1.2.5 Minimum PCPICH Transmit Power....................................................................................................1-16

2 Handover Parameters................................................................................................................2-12.1 Intra-Frequency Handover Parameters............................................................................................................2-2 2.1.1 Softer Handover Combination Indication Switch..................................................................................2-4 2.1.2 Intra-Frequency Measurement L3 Filter Coefficient.............................................................................2-4 2.1.3 Weighting Factor....................................................................................................................................2-6 2.1.4 Soft Handover Relative Thresholds.......................................................................................................2-7 2.1.5 Event 1F Absolute Thresholds......................................

.........................................................................2-8 2.1.6 Hysteresis Related to Soft Handover..........................................

...........................................................2-9 2.1.7 Time to Trigger Related to Soft Handover...........................................................................................2-11 2.1.8 Minimum Quality Threshold ofSoft Handover...................................................................................2-13 2.1.9 Affect 1A and 1B Event Thresholds Flag............................................................................................2-14 2.1.10 Cell Individual Offset.........................................................................................................................2-14 2.2


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Inter-Frequency Handover Parameters..........................................................................................................2-15 2.2.1 Inter-Frequency Measurement Report Mode.......................................................................................2-19 Issue 01 (2007-08-30) Huawei Technologies Proprietary i


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Contents

RAN Network Optimization Parameter Reference 2.2.2 Inter-Frequency Measurement Item.....................................................................................................2-20 2.2.3 Inter-Frequency Measurement Layer 3 Filter Coefficients..................................................................2-222.2.4 Frequency Weighting Factor................................................................................................................2-23 2.2.5 Hysteresis Related to Inter-Frequency Handover................................................................................2-24 2.2.6 Time to Trigger Related toInter-Frequency Hard Handover...............................................................2-25 2.2.7 RSCP-Based Inter-Frequency Measurement Start/Stop Thresholds....................................................2-26 2.2.8 EC/No-based Inter-Frequency Measurement Start/Stop Thresholds...................................................2-27 2.2.9 Target Frequency Trigger Threshold of Inter-Frequency Coverage....................................................2-28 2.2.10 Current Used Frequency Quality Threshold of Inter-Frequency Handover.......................................2-29 2.2.11 Inter-Frequency Measurement Minimum Access Thresholds...........................................................2-30 2.2.12 Cell Individual Offset.........................................................................................................................2-31 2.2.13 Inter-Frequency/Inter-RAT Algorithm Switches...............................................................................2-32 2.2.14 Inter-Frequency/Inter-RAT Measurement Threshold Choice..........................................................

..2-33 2.2.15 Inter-Frequency Measure Timer Length............................................................................................2-34

2.3 Coverage-Based Inter-RAT Handover Management Parameters.................................................................2-34 2.3.1 Inter-RAT Measurement L3Filter Coefficients...................................................................................2-39 2.3.2 Inter-RAT Measurement Report Mode................................................................................................2-39 2.3.3 Frequency Weighting Factor................................................................................................................2-41 2.3.4 Inter-RAT Period Report Interval........................................................................................................2-42 2.3.5 BSIC VerifySelection Switch...............................................................

...............................................2-42 2.3.6 Inter-RAT MeasurementQuantity........................................................................

...............................2-43 2.3.7 RSCP-Based Inter-RAT Measurement Start/Stop Thresholds.............................................................2-44 2.3.8 Ec/No-Based Inter-RAT Measurement Start/Stop Thresholds............................................................2-45 2.3.9 Inter-RAT Handover JudgingThresholds............................................................................................2-46 2.3.10 Time to Trigger Related to Inter-RAT Handover..............................................................................2-47 2.3.11 Hysteresis Related to Coverage-Based Inter-RAT Handover............................................................2-48 2.3.12 Time to Trigger for Verified GSM Cell.............................................................................................2-49 2.3.13 Time to Trigger for Non-verified GSM Cell

......................................................................................2-50 2.3.14 Penalty Time for Inter-RAT Handover...........................

...................................................................2-51 2.3.15 Cell Individual Offset.........................................................................................................................2-51 2.3.16 Current Used Frequency Quality Threshold of Inter-RAT Handover...............................................2-52 2.3.17 Inter-RAT Measure Timer Length.....................................................................................................2-53 2.4 Non Coverage-Based Inter-RAT Handover Management Parameters.........................................................2-54 2.4.1 Inter-RAT Service


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Handover Switches................................................................................................2-56 2.4.2 Inter-RAT Measurement L3 Filter Coefficient....................................................................................2-57 2.4.3 Hysteresis of Event 3C.........................................................................................................................2-57 2.4.4 Time to Trigger for Event 3C...............................................................................................................2-592.4.5 BSIC Verify Selection Switch..............................................................................................................2-59 2.4.6 Non Coverage-Based Inter-RAT Handover Judging Thresholds.........................................................2-60 2.4.7 Penalty Time for Inter-RAT Handover................................................................................................2-61 2.4.8 Inter-RAT Handover Max Attempt Times...........................................................................................2-62 2.4.9 Inter-RAT Measure Timer Length.......................................................................................................2-62 ii Huawei TechnologiesProprietary Issue 01 (2007-08-30)


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Contents

2.5 Blind Handover Management Parameters.....................................................................................................2-63 2.5.1 Blind Handover Flag............................................................................................................................2-64 2.5.2 Blind HandoverPriority.......................................................................................................................2-65 2.6 Cell Selection and Reselection......................................................................................................................2-66 2.6.1 Measurement Hysteresis Parameters....................................................................................................2-69 2.6.2 Load Level Offsets...............................................................................................................................2-70 2.6.3 Minimum Quality Criterion.................................................................................................................2-71 2.6.4 Minimum Access Level.......................................................................................................................2-72 2.6.5 Cell Reselection Start Thresholds........................................................................................................2-72 2.6.6 Reselection Hysteresis Time................................................................................................................2-73 2.6.7 MinimumAccess Level for Inter-RAT Cell................................................

........................................2-74 2.6.8 2G Idle Mode MS's Searching for 3G Cell Signal Level Threshold...............................................

.....2-75 2.6.9 3G Cell Reselection Signal Level Offset.........................

....................................................................2-76 2.6.103G Cell Reselection Signal Level Threshold.....................................................................................2-77 2.7 Neighbor Management Parameters...............................................................................................................2-77 2.7.1 Neighbor Priority Flag.........................................................................................................................2-78 2.7.2 Neighbor Priority..................................................................................................................................2-78

3 Admission Control Parameters................................................................................................3-13.1 Uplink and Downlink Initial Access Rates of BE Service..............................................................................3-5 3.2 Intelligent Admission Algorithm Switch........................................................................................................3-5 3.3 Uplink Total Equivalent User Number...........................................................................................................3-7 3.4 Downlink Total NonHSDPA Equivalent User Number.................................................................................3-8 3.5 AMR Voice Uplink Threshold for Conversation Service...............................................................................3-8 3.6 NonAMR Voice Uplink Threshold of Conversation Service........................................................................3-9 3.7 AMR Voice Downlink Threshold

for Conversation Service........................................................................3-10 3.8 Non AMR Voice Downlink Threshold of Conversation Service.................................................................3-11 3.9 Uplink Threshold for Other Services............................................................................................................3-12 3.10 Downlink Threshold for Other Services.....................................................................................................3-13 3.11 Uplink Handover Admission Threshold.....................................................................................................3-14 3.12 Downlink Handover Admission Threshold.................................................................................


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................3-15 3.13 Downlink Total Power Threshold........................

................................................................................

.......3-16 3.14 Uplink Handover Credit Reserved SF.............................

............................................................................3-173.15 Downlink Handover Credit and Channel Code Resource Reserved SF.....................................................3-17 3.16 Resources Reserved for CommonChannel Load.......................................................................................3-18

4 Load Control Parameters..........................................................................................................4-14.1 Cell Load Reshuffling Algorithm Parameters.................................................................................................4-2 4.1.1 Uplinkand Downlink LDR Algorithm Switches...................................................................................4-6 4.1.2 LDR Period Timer Length.....................................................................................................................4-7 4.1.3 Uplink and Downlink LDR Trigger Thresholdsand Release Thresholds.............................................4-8 4.1.4 Uplink or Downlink LDR Actions.........................................................................................................4-9 4.1.5 Uplink/Downlink LDR Action Handing User Number.......................................................................4-10 4.1.6 Uplink and Downlink Inter-Frequency Cell Load Handover Load Space Thresholds........................4-13 Issue 01 (2007-08-30) Huawei Technologies Proprietary iii


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RAN Network Optimization Parameter Reference 4.1.7 Uplink and Downlink Inter-Frequency Cell Load Handover Maximum Band Width.........................4-13 4.1.8Cell SF Reserved Threshold.................................................................................................................4-14 4.1.9 Uplink orDownlink Credit SF Reserved Threshods...........................................................................4-15 4.1.10 LDR Code Priority Indicator..............................................................................................................4-16 4.1.11 MBMS Power Control Service Priority Threshold............................................................................4-16

4.2 Cell Overload Congestion Control Algorithm Parameters...........................................................................4-17 4.2.1 Uplink and Downlink OLC Algorithm Switches.................................................................................4-19 4.2.2 OLC Period Timer Length...................................................................................................................4-20 4.2.3 Uplink and Downlink OLC Trigger Threshold and ReleaseThreshold..............................................4-21 4.2.4 Uplink and Downlink OLC Fast TF Restriction Times.......................................................................4-22 4.2.5 Uplink and Downlink OLC Fast TF Restrict RAB Number................................................................4-22 4.2.6 OLC Fast TF Restrict Data Rate Restrict Timer Length And Recover Timer Length........................4-23 4.2.7 OLC Fast TF Restrict Data Rate Restrict Coeff

icient..........................................................................4-24 4.2.8 Uplink and Downlink Release RAB Number......................................................................................4-24

5 PS Service Rate Control Parameters.......................................................................................5-15.1 BE Service Related Threshold Parameters......................................................................................................5-2 5.1.1 BE Service Handover Rate Threshold................................................................................................... 5-3 5.1.2 Uplink/Downlink BE Service Insured Rate...........................................................................................5-4 5.1.3 UpLink and Downlink BE traffic DCH decision threshold...................................................................5

-5 5.1.4 DL Streaming Threshold on HSDPA.....................................................................................................5-6 5.1.5 DL BE Traffic Threshold on HSDPA....................................................................................................5-6 5.1.6 UL BE Traffic Threshold onHSUPA....................................................................................................5-7 5.1.7 UL Streaming Traffic Threshold on HSUPA.........................................................................................5-7 5.1.8 Streaming Service HSUPA Transmission Mode................................................................................... 5-8 5.2 Dynamic Channel Configuration Control Parameters.................................................................................... 5-8 5.2.1 Traffic Upper Threshold.......................................................................................................................5-10 5.2.2 Traffic Lower Threshold...............

.......................................................................................................5-11 5.2.3 Time to Trigger Event 4A......................

................................................................................

..............5-12 5.2.4 Time to Trigger Event 4B...............................

................................................................................

.....5-12 5.2.5 Pending Time after Trigger Event 4A.............................

.....................................................................5-13 5.2.6Pending time after trigger Event 4B.....................................................................................................5-14 5.2.7 Uplink and Downlink DCCC Rate Thresholds.....................................................


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...............................5-15 5.2.8 Uplink and Downlink Middle Rate Thresholds...................................................................................5-15 5.2.9 Uplink and Downlink Rate Adjust Levels...........................................................................................5-16 5.2.10 Low activity bitrate threshold............................................................................................................5-17 5.3 Link StabilityParameters..............................................................................................................................5-17 5.3.1 Event Ea Relative Threshold................................................................................................................5-18 5.3.2 Event Eb Relative Threshold................................................................................................................5-19 5.3.3 Uplink Full Coverage Rate...................................................................................................................5-19 5.3.4 Downlink Full Coverage Rate..............................................................................................................5-20 5.4 State Transfer Parameters..............................................................................................................................5-21 5.4.1 DCH to FACH State Transition Timer................................................................................................5-22 iv Huawei Technologies Proprietary Issue 01 (2007-08-30)


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5.4.2 DCH to FACH / FACH to PCH State Transition Traffic 4B Threshold..............................................5-23 5.4.3 FACH to PCH State Transition Timer.................................................................................................5-23 5.4.4 Cell ReSelection Timer........................................................................................................................5-24 5.4.5 FACH to DCH Traffic Report Threshold............................................................................................5-25 5.4.6FACH to DCH Traffic Time to trigger................................................................................................5-25 5.5 PS Inactive.....................................................................................................................................................5-26 5.5.1 Interactive Service T1..........................................................................................................................5-27 5.5.2 Interactive Service T2..........................................................................................................................5-28 5.5.3 Background ServiceT1........................................................................................................................5-28 5.5.4 Background Service T1........................................................................................................................5-29 5.5.5 IMS Service T1.....................................................................................................

...............................5-30 5.5.6 IMS Service T2........................................................................................................

............................5-30 5.6 RLC Retransmission Monitor Algorithm Parameters...................................................................................5-31 5.6.1 Time to Start Re-TX Monitor...............................................................................................................5-325.6.2 Re-Tx Monitor Period..........................................................................................................................5-33 5.6.3Retransmission Filter Coefficient.........................................................................................................5-34 5.6.4 Event A threshold.................................................................................................................................5-34 5.6.5 Event A Time to Trigger.......................................................................

...............................................5-35 5.6.6 Event A Pending Time after Trigger....................................................................

................................5-35 5.6.7 Event A Report Period................

................................................................................

.........................5-36 5.6.8 Event B Threshold...........................

................................................................................

.....................5-36 5.6.9 Event B Time to Trigger.........................

................................................................................

.............5-37 5.6.10 Event B Pending Time after Trigger.....................

.............................................................................5-38

6 Miscellaneous Topic Parameters................................................

.............................................6-16.1 Cell Channel Power Distribution Parameters..................................

................................................................6-2 6.1.1 Maximum Cell Transmit Power.............................................................................................................6-3 6.1.2 Cell PCPICH TransmitPower................................................................................................................6-4 6.1.3 PSCH and SSCH Transmit Power.........................................................................................................6-4 6.1.4 BCH Transmit Power...............................................................................................................


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..............6-5 6.1.5 Maximum FACH Transmit Power.............................

............................................................................6-66.1.6 PCH Transmit Power.............................................................................................................................6-7 6.1.7 PICH Transmit Power............................................................................................................................6-7 6.1.8 AICH Transmit Power...........................................................................................................................6-8 6.2 Paging Parameters...........................................................................................................................................6-9 6.2.1 Paging CycleCoefficient.......................................................................................................................6-9 6.2.2 Number of Paging Retransmit..............................................................................................................6-10 6.3 RRC Connection Setup Parameters...............................................................................................................6-11 6.3.1 T300 and N300.....................................................................................................................................6-11 6.4 Synchronization Parameters..........................................................................................................................6-12 6.4.1 Number of Successive In-sync Indications..........................................................................................6-14 6.4.2 Number of Successive Out-of-sync Indications...................................................................................6-14 6.4.3 Radio Link Failure Timer Duration......................................................

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RAN Network Optimization Parameter Reference 6.4.4 N312 and T312.....................................................................................................................................6-16 6.4.5 N313, N315, and T313.........................................................................................................................6-17

6.5 Location Update Parameters.........................................................................................................................6-17 6.5.1 Periodic Location Update Timer..........................................................................................................6-18 6.6 User PriorityRelated Parameters..................................................................................................................6-18 6.6.1 User Priority ofAllocation/Retension Priority 1~14...........................................................................6-19 6.6.2 Integrate Priority Configured Reference..............................................................................................6-20 6.6.3 Indicator of Carrier Type Priority........................................................................................................6-21

7 HSDPA Parameters....................................................................................................................7-17.1 HSDPA Power Resource Management Parameters..................................

......................................................7-2 7.1.1 HS-DPCCH Power Management Parameters............................................................

............................7-2 7.1.2 Total Power of HSDPA and Measurement PowerOffset Constant.....................................................7-10 7.2 HSDPA Code Resource Management Algorithm Parameters......................................................................7-12 7.2.1 HSDPA Code Resource Distribution Mode.........................................................................................7-13 7.2.2 Number of HS-PDSCH Codes.............................................................................................................7-13 7.2.3 Number of Maximum HS-PDSCH Codes...........................................................................................7-14 7.2.4 Number of Minimum HS-PDSCH Codes............................................................................................7-14 7.2.5 Number of HS-SCCH Codes.................

...............................................................................................7-15 7.3 HSDPA Mobility Management Parameters....................

..............................................................................7-16 7.3.1 HSPA Handover Protection Length.....................................................................................................7-16 7.4 HSDPA Direct Retry and Switch of Channel Types Parameters..................................................................7-18 7.4.1 D2H Retry Timer Length.....................................................................................................................7-19 7.4.2 Timer Length of D2H Intra-Handover.................................................................................................7-19 7.4.3 Timer Length of D2H Inter-Handover.................................................................................................7-20 7.4.4 Timer Length of Multi-Carrier Handover............................................

................................................7-21 7.4.5 Compress Mode Permission Indication on HSDPA.........................................................

...................7-21 7.5 HSDPA Admission Control Algorithm...................

................................................................................

......7-22 7.5.1 Maximum HSDPA Users of NodeB...................................

.................................................................7-23 7.5.2 UL HS-DPCCH Reserve Factor...........................................................................................................7-24 7.5.3 HSDPA Streaming PBRThreshold......................................................................................................7-24 7.5.4 HSDPA Best Effort PBR Threshold.......


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................................................................................

.............7-25 7.5.5 Maximum HSDPA User Number...............................

.........................................................................7-25

8 HSUPA Parameters....................................................................................................................8-18.1 HSUPA MAC-e Scheduling Algorithm Parameters.......................................................................................8-2 8.1.1 Maximum Target Uplink Load Factor...................................................................................................8-2 8.1.2 Target Non-Serving E-DCH to TotalE-DCH Power Ratio...................................................................8-3 8.2 HSUPA Admission Control Algorithm...........................................................................................................8-4 8.2.1 Maximum HSUPA User Number.......................................................................................................... 8-4 8.2.2 DL HSUPA Reserved Factor ................................................................................................................ 8-5 8.2.3 NodeB Maximum HSUPA User Number..............................................................................................8-6

9 MBMS Parameters.....................................................................................................................9-1vi Huawei Technologies Proprietary Issue 01 (2007-08-30)


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Contents

9.1 MBMS Admission and Load Control Parameters...........................................................................................9-2 9.1.1 Maximum Transmit Power of the FACH...............................................................................................9-3 9.1.2 Minimum Coverage Percentage of theMBMS Service with the Highest Priority................................9-4 9.1.3Minimum Coverage Percentage of the MBMS Service with the Lowest Priority.................................9-5 9.1.4 Service Priority Threshold for Decreasing Power..................................................................................9-5 9.1.5 MBMS Preempt Algorithm Switch........................................................................................................9-6 9.2 FLC/FLD Algorithm Parameters....................................................................................................................9-7 9.2.1 FLC Algorithm Switch...........................................................................................................................9-7

10 Algorithm Switches...............................................................................................................10-110.1 Connection-Oriented Algorithm Switches in RNC.....................................................................................10-2 10.1.1 Channel Algorithm Switches...................................................................

..........................................10-2 10.1.2 Handover Algorithm Switches...............................................................................

............................10-6 10.1.3 Power Control Algorithm Switches........

................................................................................

.........10-11 10.1.4 HSPA Algorithm Switches...................................

............................................................................10-13 10.1.5 DRD Algorithm Switches................................................................................................................10-15 10.2 Cell Algorithm Switches...........................................................................................................................10-16 10.2.1 Cell Algorithm Switches..................................................................................................................10-16 10.2.2 Uplink AdmissionControl Algorithm Switch .......................................................

.........................10-18 10.2.3 Downlink Admission Control Algorithm Switch.............................................................................10-19 10.3 Other Algorithm Switches.........................................................................................................................10-2010.3.1 Iub CAC Algorithm Switches..........................................................................................................10-20 10.3.2 Iub Bandwidth Congestion Control Algorithm Switch....................................................................10-20 10.3.3 Intra-Frequency Measurement Control Information Indication.......................................................10-2110.3.4 Inter-Frequency/Inter-RAT Measurement Indication......................................................................10-22 10.3.5 FACH Measurement Indicator ........................................................................................................10-22

11 Transmission Resource Management Parameters...........................................................11-111.1 Transmission Common Parameters.............................................................................................................11-2 11.1.1 AAL2Path Type................................................................................................................................11-2 11.1.2 IP Path Type.......................................................................................................................................11-3 11.1.3 Per-Hop Behavior...........................................................................


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....................................................11-3 11.2 Iub Admission Control Parameters.............................................................................................................11-4 11.2.1 Reserved Bandwidth for Forward/Backward Handover....................................................................11-4 11.3 Iub Congestion Control Parameters............................................................................................................11-5 11.3.1 Forward/Backward Congestion Threshold.........................................................................................11-8 11.3.2 Forward/Backward Congestion Clear Threshold...............................................................................11-9 11.3.3 Iub Bandwidth Congestion Control Algorithm Switch......................................................................11-9 11.3.4 Timer Length for Iub Bandwidth Restriction Service Rate Reduction............................................11-10 11.3.5 Iub Congestion Factors.....................................................................................................................11-11

12 Parameters Configured on NodeB LMT............................................................................12-112.1 HSDPA Flow Control Parameters...............................................................................................................12-2 12.1.1 HSDPA Bandwidth Adjustment Switch............................................................................................12-2 Issue 01 (2007-08-30) Huawei Technologies Proprietary vii


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RAN Network Optimization Parameter Reference 12.1.2 Frame Discard Rate Thresholdon Iub Interface................................................................................12-3 12.1.3 Time Delay Threshold on Iub Interface.............................................................................................12-4

12.2 HSDPA MAC-hs Scheduling Algorithm Parameters.................................................................................12-5 12.2.1 Resource AllocateMethod.................................................................................................................12-8 12.2.2 Scheduling Method............................................................................................................................12-9 12.2.3 Maximum Retransmission Count.....................................................................................................12-10 12.2.4 Power Margin...................................................................................................................................12-10 12.2.5 HS-SCCH Power Control Method...................................................................................................12-11 12.2.6 HS-SCCH Fixed Power or Initial Transmit Power..........................................................................12-12 12.2.7 Target HS-SCCH FER.....................................................................................................................12-12 12.2.8 Initial BLER of Data Transfer ........................................................................................

.................12-13 12.2.9 Resource Limiting Switch..........................................................................................................

......12-14 12.2.10 HSDPA Dynamic Code Switch...................................

...................................................................12-14 12.2.1116QAM Switch..............................................................................................................................12-15 12.2.12 CQI Filter Alpha.............................................................................................................................12-16 12.2.13 GBR for SPI...................................................................................................................................12-16 12.2.14 Weight for SPI................................................................................................................................12-18 12.2.15 Resource Limiting Ratio for SPI.....................................................................

...............................12-18 12.3 HSUPA MAC-e Scheduling Algorithm Parameters...........................................................................

......12-19 12.3.1 AG Threshold.................................................

................................................................................

..12-20 12.3.2 Average Rate Initial Value.......................................

........................................................................12-20 12

.3.3 GBR Schedule Switch........................................................

..............................................................12-21 12.3.4 SortRate Weight..............................................................................................................................12-22 12.3.5 Sort RateRSN Weight.....................................................................................................................12-22 12.4 HSUPA Power Control Parameters........................................................................

...................................12-23 12.4.1 Power Control Algorithm Switchesfor Downlink Control Channel...............................................12-23 12.4.2 Fixed Power Control Mode Algorithm Parameters..........................................................................12-28 12.4.3 Dynamic Power Control Mode Algorithm Parameters....................................................................12-32 12.5 Local Cell Management Parameters..........................................................................................................12-36 12.5.1 Cell Radius.......................................................................................................................................12-36 12.5.2 Cell Handover Radius...........................................


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Figures

FiguresFigure 7-1 Impact from over long HSPA protection length...............................................................................7-17

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Tables

TablesTable 1-1 List of uplink power control parameters..............................................................................................1-2 Table 1-2 List of downlink power control parameters.......................................................................................1-12 Table 1-3 Maximum and minimumdownlink transmit powers.........................................................................1-13 Table 2-1 List of intra-frequency handover parameters.......................................................................................2-2 Table 2-2 List of inter-frequency handover parameters.....................................................................................2-15 Table 2-3 List of coverage-based inter-RAT handover management parameters..............................................2-35 Table 2-4 List of non-coverage-based inter-RAThandover management parameters.......................................2-55 Table2-5 List of blind handover management parameters................................................................................2-63 Table 2-6 List of cell selection and reselection parameters................................................................................2-66 Table 2-7 List of neighbor management parameters..........................................................................................2-77 Table 3-1 List of admission control parameters..............................................................................................

.....3-1 Table 4-1 List of cell load reshuffling (LDR) algorithm parameters................................................................... 4-2 Table 4-2 List of smart load control parameters.................................................................................................4-17 Table 5-1 List of BE service related threshold parameters...................................................................................5-2 Table 5-2 List of dynamic channel configuration parameters..............................................................................5-9 Table 5-3 List of link stability parameters..........................................................................................................5-17 Table 5-4 List of state transfer parameters.........................................................................................................5-21 Table 5-5 List of PS inactive parameters............................................................................................................5-26

Table 5-6 List of RLC retransmission monitor algorithm parameters...............................................................5-31 Table 6-1 List of cell channel power distribution parameters..............................................................................6-2 Table 6-2 List of paging parameters.....................................................................................................................6-9 Table 6-3 List of RRC connection setup parameters..........................................................................................6-11 Table 6-4 List of synchronization parameters....................................................................................................6-13 Table 6-5 List of location update parameters.....................................................................................................6-18 Table6-6 List of user priority related parameters..............................................................................................6-19 Table 7-1 List of

HS-DPCCH power control parameters.....................................................................................7-2 Table 7-2 List of total power of HSDPA and measurement power offset constant...........................................7-10 Table 7-3 List of HSDPA code resource management algorithm parameters....................................................7-12 Table 7-4 List of HSDPA mobility management parameters.............................................................................7-16 Table 7-5 List of HSDPA direct retry and switch ofchannel types parameters.................................................7-18 Table 7-6 List of HSDPA admission control algorithm parameters..................................................................7-22 Table 8-1 List of HSUPA MAC-e


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scheduling algorithm parameters.................................................................. 8-2 Table 8-2 List of HSUPA admission control algorithm parameters.................................................................... 8-4 Issue 01 (2007-08-30) Huawei Technologies Proprietary xi


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Tables

RAN Network Optimization Parameter Reference Table 9-1 List of MBMS admission and preempt algorithm parameters.............................................................9-2 Table 9-2 List of FLC/FLD algorithm parameters...............................................................................................9-7Table 10-1 List of channel algorithm switches..................................................................................................10-3 Table 10-2 List of handover algorithm switches................................................................................................10-6 Table 10-3 List of powercontrol algorithm switches.......................................................................................10-12 Table 10-4 List of HSPA algorithm switches...................................................................................................10-13 Table 10-5 List of DRD algorithm switches....................................................................................................10-15 Table 10-6 List of cell algorithm switches.......................................................................................................10-16 Table 10-7 CAC algorithm switches................................................................................................................10-20 Table11-1 List of transmission common parameters........................................................................................11-2 Table 11-2 List of Iubadmission control parameters.........................................................................................11-4 Table 11-3 List of Iub congestion control parameters..................................................................

......................11-6 Table 11-4 Iub Congestion Factor Configuration.......................................................................................

......11-12 Table 12-1 List of HSDPA flow control parameters....................

......................................................................12-2 Table12-2 List of HSDPA MAC-hs scheduling algorithm parameters.............................................................12-5 Table 12-3 GBR, weight and resourcelimiting ratio for SPI...........................................................................12-17 Table 12-4 List of HSUPA MAC-e scheduling algorithm parameters............................................................12-19 Table 12-5 List of power control algorithm switches for downlink control channel.......................................12-23 Table 12-6 List of fixed power control modealgorithm parameters................................................................12-28 Table 12-7 List of dynamic power control mode algorithm parameters....

......................................................12-32 Table 12-8 List of local cell management parameters.................................................

.....................................12-36

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About This Document

About This Document

PurposeThis document provides the engineering technician of commercial office with a parameter setting baseline and parameter adjustment instructions.

Related VersionsThe following table lists the product versions related to this document. ProductName RNC NodeB Version V200R009 V100R008

Intended AudienceThis document is intended for:l l

RNP engineers RNO engineers

Update HistoryRefer to Changes in RAN Network Optimization Parameter Reference.

Organization

1 Power Control Parameters Power control is a key WCDMA technique, through whichnear and far effect, shadow fading and fast fading can be overcome to ensure uplink and downlink network performance, reduce network interference and improve the system quality and capacity. As a result, power control parameter values havegreat impact on the network. 2 Handover Parameters Handover aims to ensure communication continuity and good communication quality. Handovers in WCDMA system are of the following types: soft handover, softer handover, intrafrequency hard handover, inter-frequency hard handover, inter-RAT hard handover and so on. Handover emerges as the important factor affecting network performance, and handoverIssue 01 (2007-08-30) Huawei Technologies Proprietary 1


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About This Document


optimization is also significant in network optimization. Handover parameters are described according to the handover classification. 3 Admission Control Parameters Admission control is a way for coordinating the WCDMA system capacity, coverage and quality, and it ensures the system stability and QoS requirement by control over user access. 4 Load Control Parameters Load control is another very important function in WCDMA system. It maintains the system load within the normalrange to ensure that the systems overall QoS is in the normal range. The load control includes LDR (Load Reshuffling) and OLC (Overload Control). 5 PS Service Rate Control Parameters The PS Service rate control includes dynamic channel configuration, state transfer. 6 Miscellaneous Topic Parameters Special topic parameters include parameters for cell channel power distribution, paging, RRC connection setup, synchronization and location updating. 7 HSDPA Parameters HSDPA parameters include HSDPA power resource management parameters, HSDPA code resource management algorithm parameters, HSDPA mobility management parameters, HSDPA directretry and switch of channel types parameters, and HSDPA call admission control algorithm parameters. 8 HSUPA Parameters HSUPA parameters include HSUPA MAC-e scheduling algorithm parameters, HSUPA power control parameters, and HSUPA admission control parameters. 9 MBMS Parameters MBMS parameters mainly include MBMS admission and load control parameters. 10 Algorithm Switches In the RNC, algorithm switches are divided into two classes: connection-oriented algorithm switches and

cell-oriented algorithm switches. 11 Transmission Resource Management Parameters The common configurable transmission parameters are listed here. 12 ParametersConfigured on NodeB LMT The parameters configured on the NodeB LMT described here mainly consist of the HSDPA flow control parameters, the HSDPA MAC-hs scheduling algorithm parameters, the HSUPA MAC-e scheduling algorithm parameters, the HSUPA power control parameters and the local cell management parameters.

Conventions1. Symbol Conventions The following symbols may be found in this document. Theyare defined as follows2 Huawei Technologies Proprietary Issue 01 (2007-08-30)


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Symbol

Description Indicates a hazard with a high level of risk that, if not avoided, will result in death or serious injury. Indicates a hazard with a medium or low level of risk which, if not avoided, could result in minor or moderate injury. Indicates a potentially hazardous situation that, if not avoided, could cause equipment damage, data loss, and performance degradation, or unexpected results. Indicates a tip that may help you solve a problem or save your time. Provides additional information to emphasize or supplement important points of the main text.

DANGER

WARNING

CAUTIONTIP

NOTE

2. General Conventions Convention Times New Roman Boldface Italic Courier New 3.

Command Conventions Convention Boldface Italic [] {x | y | ...} [ x | y | ... ]{ x | y | ... } * Description The keywords of a command line are in boldface. Command arguments are in italic. Items (keywords or arguments) in square brackets[ ] are optional. Alternative items are grouped in braces and separated by vertical bars.One is selected. Optional alternative items are grouped in square brackets and separated by vertical bars.One or none is selected. Alternative items are grouped in braces and separated by vertical bars.A minimum of one or a maximum of all can be selected. Description Normal paragraphs are in Times New Roman.Names of files,directories,folders,and users are in boldface. For example,log inas user root . Book titles are in italics. Terminal display is in Courier New.

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Convention [ x | y | ... ] *

Description Alternative items are grouped in braces and separated by vertical bars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions Convention Boldface > Description Buttons,menus,parameters,tabs,window,and dialog titles are in boldface. For example,click OK. Multi-level menus are in boldface and separated by the ">" signs. For example,choose File > Create > Folder .

5. Keyboard Operation Convention Key Key1+Key2 Key1,Key2 Description Press the key.For example,press Enter and press Tab. Press the keys concurrently.For example,pressing Ctrl+Alt+A means the three keys should be pressed concurrently. Pressthe keys in turn.For example,pressing Alt,A means the two keys should be pressed in turn.

6. Mouse Operation Action Click Double-click Drag Description Select and releasethe primary mouse button without moving the pointer. Press the primary mouse button twice continuously and quickly without moving the pointer. Press and hold the primary mouse button and move the pointer to a certain position.

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1 Power Control Parameters

1About This Chapter

Power Control Parameters

Power control is a key WCDMA technique, through which near and far effect, shadow fading and fast fading can be overcome to ensure uplink and downlink network performance, reduce network interference and improve the system quality and capacity. As a result, power control parameter values have great impact on the network. 1.1 Uplink Power Control Parameters The common configurable uplink power control parameters are listed here. 1.2 Downlink Power Control Parameters The commonconfigurable downlink power control parameters are listed here.

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1.1 Uplink Power Control ParametersThe common configurable uplink power control parameters are listed here. Table 1-1 List of uplink power control parameters N o. 1 Paramete r ID PowerOffs etPpmParameter Meaning Power offset between the last access preamble and message control part Constant for PRACH initial transmit power Power increase step of randomaccess preamble Maximum of preamble retransmissio n Max preamble loop Default constant for initial DPCCH transmit power Default Value Signalling: -3 dB Services: -2 dB Relevant Command Set: ADD PRACHTFC Modify: The PRACH TFC needs to be deleted before being reconfigured. Leve l Cell

2

ConstantV alue

-20, that is, -20 dB

Set: ADD PRACHBASIC Modify: The PRACH needs to be deleted before being reconfigured.

Cell

3

PowerRam pStep

2, that is, 2 dB

4

PreambleR etransMax

8 times

5

Mmax

8 times

Set: ADD RACH Query: LST RACH Modify: MOD RACH

Cell

6

DefaultCo nstantValu e

-27, that is, -27 dB

Set or modify: SET FRC Query: LST FRC

RNC

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N o. 7

Paramete r ID MaxAllow edUlTxPo wer MaxUlTx PowerFor Conv MaxUlTx PowerFor Str MaxUlTx PowerForI nt MaxUlTx PowerFor Bac

Parameter Meaning Maximum UE uplink transmit power per service

Default Value 24, that is, 24 dBm

Relevant Command MaxAllowedUlTxPower Set: ADD CELLSELRESEL Query: LST CELLSELRESEL Modify: MOD CELLSELRESEL Service-Oriented Parameters Set: ADD CELLCAC Query:LST CELLCAC Modify: MOD CELLCAC

Leve l Cell

8

RRCPRO CSRBDE LAY HHOPRO CSRBDE LAY

Delay of SRB in DCH RRC process [Frame] Delay of SRB in DCH HHO process [Frame]

RRC Proc DPCCH PC preamble length [Frame] HHO Proc DPCCH PC preamble length [Frame]

7

Set: ADD CELLCAC Query: LST CELLCAC Modify: MOD CELLCAC

Cell

9

RRCPRO CPCPREA MBLE HHOPRO CPCPREA MBLE

RRC: 0 HHO: 7

1.1.1 Power Offset Between Access Preamble and Message Control Part This parameter is the power offset between the last access preamble and the message controlpart. The access preamble power plus this offset equals the power of the controlpart. 1.1.2 PRACH Initial Transmit Power Constant This parameter is the constant for the UE to estimate the initial PRACH transmit power in the open loop powercontrol process. 1.1.3 PRACH Power Ramp Step This parameter is the power increase step of the random access preambles transmitted before the UE which receivesthe acquisition indicator in the random access process. 1.1.4 Maximum Preamble Retransmit AttemptsIssue 01 (2007-08-30) Huawei Technologies Proprietary 1-3


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This parameter is the maximum number of preambles retransmission of the UE in apreamble ramping cycle. 1.1.5 Maximum Preamble Loop This parameter defines the maximum number of random access preamble loops. When the UE has transmitted the access preamble and the number of retransmission times has reached PreambleRetransMax, if the UE still has not received the capture indication, it repeats the access attempt after the specified waiting time. The maximum number of recycle cannot exceed Mmax. 1.1.6 Default DPCCH Transmit Power Constant This parameter is used by the RNC to compute the DPCCH power offset which is used by the UE to compute the initial transmit power of UL DPCCH during the open loop power control process. 1.1.7 Maximum Allowed Uplink Transmit Power of the UE The MaxAllowedULTxPower parameter determines the maximum transmit power of an UE when the UE gainsaccess to a specific cell. This means that the cell selects UE_TXPWR_MAX_RACH inthe S rule. In addition, there are four maximum UE transmit power parameters oriented to different QoS services. 1.1.8 RRC/HHO Process SRB Delay This parameterdefines the delay of SRB in DCH RRC/HHO process. 1.1.9 RRC/HHO Process DPCCH Power Control Preamble Length This parameter defines the DPCCH power control preamble length in DCH RRC/HHO process.

1.1.1 Power Offset Between Access Preamble and Message Control PartThis parameter is the power offset between the last access preamble and the mess

age control part. The access preamble power plus this offset equals the power ofthe control part.

Parameter IDPowerOffsetPpm

Value Range5 to 10

Physical Value Range5 dB to 10 dB, step 1 dB

Parameter Setting

According to the field test results, the recommended value during signaling transmission is set to 3 dB, and that during service transmission to 2 dB.

Impact on the Network Performancel

If the parameter value is set too low, it is likely that the signaling and the service data carried over the RACH cannot be received by UTRAN, which affects theuplink coverage.Huawei Technologies Proprietary Issue 01 (2007-08-30)

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If the value is too high, the uplink interference is increased, and the uplink capacity is affected.

Relevant CommandsSet the parameter through ADD PRACHTFC, delete the PRACH TFC through RMV PRACHTFC before reconfiguring it. It is necessary to deactivate PRACH (DEA PRACH) and the cell (DEA CELL) before RMV PRACHTFC is executed.

1.1.2 PRACH Initial Transmit Power ConstantThis parameter is the constant for the UE to estimate the initial PRACH transmitpower in the open loop power control process.

Parameter IDConstantValue

Value Range-35 to -10

Physical Value Range

-35 dB to -10 dB step 1 dBParameter SettingThe default value is -20, that is, -20 dB. This parameter is used to calculate the transmit power of the first preamble in the random access process. The formula is as follows: Preamble_Initial_Power = PCPICH DL TX power - CPICH_RSCP + UL_interference + Constant_Value wherel l l l

Preamble_Initial_Power is the preamble initial transmit power of the UE. PCPICHDL TX power is downlink transmit power of the PCPICH. CPICH_RSCP is the receivedsignaling code power of the PCPICH measured by the UE. UL_interference is the uplink interference, which is obtained by the UE receiving data from the broadcas

t channel. It is calculated at the network side and broadcast to the UE. This value is kept in the background record of the UE under test. Constant_Value is obtained by the UE receiving data from the broadcast channel.

l


If the parameter value is set too high, the initial transmit power becomes higher, whereas the duration of the access process becomes shorter.Huawei Technologies Proprietary 1-5

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1 Power Control Parametersl


If the value is too low, to satisfy the requirement of access power, it requiresmore ramps and lengthens the access period.

Relevant CommandsSet this parameter through ADD PRACHBASIC and modify it through MOD PRACHUUPARAS.

1.1.3 PRACH Power Ramp StepThis parameter is the power increase step of the random access preambles transmitted before the UE which receives the acquisition indicator in the random accessprocess.

Parameter IDPowerRampStep

Value Range1 to 8

Physical Value Range

1 dB to 8 dB, step 1 dBParameter SettingThe default value is 2, that is 2 dB.


If this value is too high, the access process is shortened, but the probabilityof power waste is higher. If it is too low, the access process is lengthened, but the transmitting power is saved.

l

It is a value should be weighed.

Relevant CommandsSet this parameter through ADD PRACHBASIC modify it through MOD PRACHUUPARAS, and query it through LST PRACH.

1.1.4 Maximum Preamble Retransmit AttemptsThis parameter is the maximum number of preambles retransmission of the UE in apreamble ramping cycle.

Parameter IDPreambleRetransMax

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Physical Value Range1 to 64 times

Parameter SettingThe default value is 8 times. The product of this parameter and the previous PRACH Power Ramp Step determines the maximum ramp power of the UE within a preambleramping cycle.


If this value is too low, the preamble power may fail to ramp to the required value, resulting in UE access failure. If it is too high, the UE may repeatedly make access attempts by increasing the transmit power, resulting in interference to other users.

l

Relevant CommandsSet this parameter through ADD PRACHBASIC, modify it through MOD PRACHUUPARAS, a

nd query it through LST PRACH.1.1.5 Maximum Preamble LoopThis parameter defines the maximum number of random access preamble loops. Whenthe UE has transmitted the access preamble and the number of retransmission times has reached PreambleRetransMax, if the UE still has not received the capture indication, it repeats the access attempt after the specified waiting time. The maximum number of recycle cannot exceed Mmax.

Parameter IDMmax

Value Range

1 to 32

Physical Value RangeNone.

Parameter SettingThe default value is 8.

Impact on the Network Performancel l

If this parameter is too low, the UE access success rate is influenced. If it istoo high, the UE probably tries access attempt repeatedly within a long time, w

hich increases the uplink interference.Huawei Technologies Proprietary 1-7

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MaxUlTxPowerForConv (maximum transmit power for the session service) MaxUlTxPowerForStr (maximum transmit power for the stream service) MaxUlTxPowerForInt (maximum transmit power for the exchange service) MaxUlTxPowerForBac (maximum transmit power for the background service)

Value Range-50 to +33

Physical Value Range-50 dBm to +33 dBm, with step length as 1 dBm

Parameter SettingThe setting of this parameter is based on the planned uplink network coverage. The default setting of MaxAllowedULTxPower is 21, which stands for 21 dBm. The values of the other four parameters cannot be greater than the value of MaxAllowedULTxPower. By default, the parameters MaxUlTxPowerForConv, MaxUlTxPowerForStr, MaxUlTxPowerForInt, and MaxUlTxPowerForBac are set to 24 dBm. If the capacity ofa cell is restricted, this group of parameters are not a constraint for the cell. The reason is that the rapid power control function can dynamically adjust thetransmit power of an UE. If the coverage of a cell is restricted, the following

formula is provided according tothe requirement of full coverage:

You can infer that

Noiserise = Itotal/PN. Where:l l l l

PUE,max represents the maximum transmit power of the UE. Lmax represents the maximum path loss. The character v represents the activation factor of a service. Gp represents the processing gain of a service. The formula is: Gp = W/R, where Wrepresents signal bandwidth and R represents the data transmission rate of a se

rvice. Ga represents antenna gain, which is the sum of the actual antenna gain and the cable loss gain. Gd represents the sum of diversity gains, such as multi-path diversity gain and receiver antenna gain. PN represents the background noise. Eb/Io represents the target SIR value of a service.

l

l

l l

For the services that do not require full cell coverage, you can also use the previous formula to measure the transmit power of the UE that meets the special re

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the transmit power of an UE has reached the maximum, you can use the previous formula to measure the uplink coverage area.

Impact on Network PerformanceIf coverage area is restricted, the uplink coverage area is affected if this parameter is set to a very small value.

Relevant CommandsMaxAllowedUlTxPower: use the ADD CELLSELRESEL command for configuration, the LSTCELLSELRESEL command for query, and the MOD CELLSELRESEL command for modification. Service-oriented parameters: use the ADD CELLCAC command for configuration,the LST CELLCAC command for query, and the MOD CELLCAC command for modification.

1.1.8 RRC/HHO Process SRB DelayThis parameter defines the delay of SRB in DCH RRC/HHO process.

Parameter IDRRCPROCSRBDELAY HHOPROCSRBDELAY

Value Range

0 to 7Physical Value Range0 to 7 frames, step is 1

Parameter SettingThe default value of each parameter is 7. The delay of SRB involves the following signalling: PHYSICAL CHANNEL RECONFIGURATION, RADIO BEARER ESTABLISHMENT, RADIO BEARER RECONFIGURATION, RADIO BEARER RELEASE, TRANSPORT CHANNEL RECONFIGURATION, HANDOVER TO UTRAN COMMAND, RRC CONNECTION SETUP and CELL UPDATE CONFIRM.

Impact on the Network PerformanceThe improper setting of this parameter will result in data loss and retransmissi

on delay, which may have a negative effect on service rate and transmission delay.

Relevant CommandsSet this parameter through ADD CELLCAC, query it through LST CELLCAC and modifyit through MOD CELLCAC.1-10 Huawei Technologies Proprietary Issue 01 (2007-08-30)


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1.1.9 RRC/HHO Process DPCCH Power Control Preamble LengthThis parameter defines the DPCCH power control preamble length in DCH RRC/HHO process.

Parameter IDRRCPROCPCPREAMBLE HHOPROCPCPREAMBLE

Value Range0 to 7

Physical Value Range0 to 7 times, step is 1

Parameter SettingRRCPROCPCPREAMBLE is set to 0 by default, and the default value of HHOPROCPCPREAMBLE is 7. The power control preamble involves the following signalling: PHYSICAL CHANNEL RECONFIGURATION, RADIO BEARER ESTABLISHMENT, RADIO BEARER RECONFIGURATION, RADIO BEARER RELEASE, TRANSPORT CHANNEL RECONFIGURATION, HANDOVER TO UTRANCOMMAND, RRC CONNECTION SETUP and CELL UPDATE CONFIRM. This parameter is initially used for uplink/downlink power control convergence, preventing UE from using

an uncontrollable power at the beginning. When the UE transmits signals on the DPCCH, the NodeB needs a period of time to recognize the uplink signals. The length of this period of time depends on the search implementation and the transmission delay. It is useless to start the uplink transmission on DPDCH before the above process is completed. Because at that time, the data can not be correctly received and will be lost. If the AM mode is used, the retransmission may lead toa much longer delay for data transmission. The power control algorithm 1 is theonly selection during the preamble period. This parameter is closely related tothe DPCCH initial transmit power, the initial SIR target, the power control algorithm itself and the NodeB search ability, so it should be properly adjusted inreality.

Impact on the Network Performance

The improper setting of this parameter will result in data loss and retransmission delay, which may have a negative effect on service rate and transmission delay.

Relevant CommandsSet this parameter through ADD CELLCAC, query it through LST CELLCAC and modifyit through MOD CELLCAC.

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Table 1-2 List of downlink power control parameters No. 1 Parame ter ID RlMaxD lPwr Parameter Meaning Maximum downlink transmit power of the radio link Minimumdownlink transmit power of the radio link Cell PCPICH transmit power 330, that is, 33 dBm Set: ADD PCPICH Query: LST PCPICH Modify: MOD CELL 346, that is, 34.6dBm Set: ADD PCPICH Query: LST PCPICH Modfy: MOD PCPICHPWR Default Value Refer to the table Maximum and minimum downlink transmit powers Relevant Command Set: ADD CELLRLPWR Query: LST CELLRLPWR Modify: MOD CELLRLPWR Level Cell

2

RlMinD lPwr

3

PCPICH Power

4

MaxPC PICHPo wer MinPCP ICHPow er

Maximum PCPICH transmit power Minimum PCPICH transmit power5

313, that is, 31.3 dBm

1.2.1 Maximum Downlink Transmit Power of the Radio Link This parameter is the maximum downlink transmit power of radio link. It should fulfill the coverage requirement of the network planning, and the value is relative to PCPICH transmit power. 1.2.2 Minimum Downlink Transmit Power of the Radio Link This parameter is the minimum transmit power of downlink radio link. It should be considered with the maximum downlink transmit power and the dynamic range of power control, and its value is relative to PCPICH transmit power. 1.2.3 Cell PCPICH Transmit Power

It is used to determine the power of Primary CPICH of a cell. The reference point is the antenna connector of NodeB. Its value is related to the downlink coverage in the network planning. 1.2.4 Maximum PCPICH Transmit Power It is used to determine the maximum transmit power of primary CPICH of a cell. The reference point is the antenna connector of NodeB. Its value is related to the downlink coverage in the network planning. 1.2.5 Minimum PCPICH Transmit Power1-12 Huawei Technologies Proprietary Issue 01 (2007-08-30)


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It is used to determine the minimum transmit power of primary CPICH of a cell. The reference point is the antenna connector of NodeB. Its value is related to the downlink coverage in the network planning.

1.2.1 Maximum Downlink Transmit Power of the Radio LinkThis parameter is the maximum downlink transmit power of radio link. It should fulfill the coverage requirement of the network planning, and the value is relative to PCPICH transmit power.

Parameter IDRlMaxDlPwr

Value Range-350 to 150

Physical Value Range-35 dB to 15 dB, step 0.1 dB

Parameter SettingThe service type and the service rate should be considered in parameter configur

ation. For an individual service, the configuration values are listed in Table 1-3. Table 1-3 Maximum and minimum downlink transmit powers Service Type (uint: bit/s) Max. Downlink Transmit Power (in the parentheses is the dB value) Min. Downlink Transmit Power (in the parentheses is the dB value)

CS 12.2K AMR 64K transparent data 56K transparent data 32K transparent data 28.8K transparent data 57.6K controllable stream PS 0 stream (unidirectional) 384K 256KIssue 01 (2007-08-30)

0(0) 30(3) 0(0) -20(-2) -20(-2) -10(-1)

-150(-15) -120(-12) -150(-15) -170(-17) -170(-17) -160(-16)

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Service Type (uint: bit/s)

Max. Downlink Transmit Power (in the parentheses is the dB value) 0(0) 0(0) 0(0)-40(-4) -60(-6) -80(-8)

Min. Downlink Transmit Power (in the parentheses is the dB value) -150(-15) -150(-15) -150(-15) -190(-19) -210(-21) -230(-23)

144K 128K 64K 32K 16K 8K

For combined services, the maximum and minimum transmit power is computed by theRNC according to the configuration of individual services.


If this parameter is too high, downlink interference may occur. If it is too low, it may influence the normal functioning of downlink power control.

Relevant Commands

Set this parameter through ADD CELLRLPWR, query it through LST CELLRLPWR and modify it through MOD CELLRLPWR.

1.2.2 Minimum Downlink Transmit Power of the Radio LinkThis parameter is the minimum transmit power of downlink radio link. It should be considered with the maximum downlink transmit power and the dynamic range of power control, and its value is relative to PCPICH transmit power.

Parameter IDRlMinDlPwr


Physical Value Range-35 dB to 15 dB, step 0.1 dB

Parameter SettingSince the dynamic range of power control is set to 15 dB, this parameter is recommended as RL Max DL TX power -15 dB and refer to the related description of thesub clause Maximum Downlink Transmit Power of the Radio Link.1-14 Huawei Technologies Proprietary Issue 01 (2007-08-30)


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If this parameter is too low, the transmit power may become too low because of incorrect estimation of SIR. If it is too high, it may influence the normal functioning of downlink power control.

l

Relevant CommandsSet this parameter through ADD CELLRLPWR, query it through LST CELLRLPWR and modify it through MOD CELLRLPWR.

1.2.3 Cell PCPICH Transmit PowerIt is used to determine the power of Primary CPICH of a cell. The reference point is the antenna connector of NodeB. Its value is related to the downlink coverage in the network planning.

Parameter IDPCPICHPower


Physical Value Range-10 dBm to 50 dBm, step 0.1 dBm

Parameter SettingThe default setting is 330, namely 33 dBm. This parameter should be set based onthe actual system environment such as cell coverage (radius) and geographical environment. For the cells to be covered, the downlink coverage should be guaranteed as a premise. For the cells requiring soft handover area, this parameter should satisfy the proportion of soft handover areas stipulated in the network plan

ning. For a cell with large coverage, the value of this parameter should be relatively high; otherwise, it should be relatively low. In a planned multi-cell environment, this parameter is definite If the value of this parameter is smaller than the planned value, coverage holes may occur when the cells are under heavy load.


If this parameter is too low, it influences directly the downlink pilot coveragerange. If it is

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