8 UMTS Radio Parameter-127

7/26/2019 8 UMTS Radio Parameter-127

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UMTS Radio Parameter

ZTE University


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Content

UMTS Cell Selection and ReselectionParameterUMTS Intra-Frequency Handover Parameter

UMTS Inter-Frequency Handover ParameterUMTS Inter-RAT Handover Parameter


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Strategy of Cell Selection and Reselection

For normal service, the UE has to camp on a suitable cell,tune to that cell's control channel(s) so that the UE can:Receive system information from the PLMN;Receive registration area information from the PLMN, e.g., locationarea and routing area; andIdentify to which service area as specified by NAS that the servingcell belongs.Receive other AS and NAS Information;Receive paging and notification messages from the PLMN;

Initiate call setup for outgoing calls or other actions from the UE.


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Cell Selection and Reselection (A)

To B


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Cell Selection and Reselection (B)From A


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Cell selection criteria-Rule S

Qqualmeas Measured cell quality value. The quality of the received

signal expressed in CPICH Ec/N0 (dB).Qrxlevmeas Measured cell RX level value. The quality of thereceived signal expressed in CPICH RSCP (dBm).Qqualmin Minimum required quality level in the cell (dB).Qrxlevmin Minimum required RX level in the cell (dBm).Pcompensation max(UE_TXPWR_MAX_RACH P_MAX 0)UE_TXPWR_MAX_RACH Maximum TX power level on RACH (dBm)P_MAX Maximum RF output power of the UE (dBm)

Srxlev > 0 AND Squal > 0Squal Qqualmeas QqualminSrelev Qrxlevmeas Qrxlevmin Pcompensation


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Camped Normally State

Select and monitor the indicated PICH and PCH of the cellaccording to information sent in system information.Monitor relevant system information.Perform necessary measurements for the cell reselection

evaluation procedure.Execute the cell reselection evaluation process.


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Measurement rules for cell re-selection

If Sx > SIntraSearch, UE does not measure intra-frequency cells.If Sx Sintersearch, UE does not measure inter-frequency cells.

If Sx SSearchRat, UE does not measure inter-RAT cells.If Sx


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Cell reselection criteria-Rule R

Qmeas,s Quality measurement result of serving cell.Qmeas,n Quality measurement result of neighbor cell.

Qhyst1s Hysteresis value when measurement value is CPICH RSCP.Qhyst2s Hysteresis value when measurement value is CPICH Ec/No.Qoffset1s,n Offset of two cells when measurement value is CPICHRSCP.Qoffset2s,n Offset of two cells when measurement value is CPICHEc/No.The new cell is better ranked than the serving cell during a time intervalTreselection according to the R criteria.More than 1 second has elapsed since the UE camped on the currentserving cell.

Rs Qmeas,s + QhystsRn Qmeas,n Qoffsets,n


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Intra-Frequency Cell Re-Selection

Time

P-CPICH

Ec/Io

Serving Cell Serving Cell

Neighboring Cell

Neighboring Cell

Neighboringcell criterion S

is fulfilled and isranked

Neighboring cellbetter ranking

than Serving cell

UE perform cellreselection

Treselections

Qmeas,s + Qhyst2s

Qmeas,n - Qoffset2s,n

Qqualmin

UE performintra-frequencymeasurements

Qqualmin +SIntraSearch


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Inter-RAT Cell Re-Selection

Time

Quality/ Rx Lev

GSM ServingCell

UMTSServing Cell

GSMNeighboring Cell UMTS

Neighboring Cell

Inter-RAT cellcriterion S is

fulfilled and isranked

Neighboring cellbetter ranking

than Serving cell

UE performinter-RAT cell

reselection

Treselections

Qmeas,s + Qhyst1s

Qmean,n Qoffset1s,n

QRxLevMin

UE performinter-RAT

measurements

Qqualmin +SSearchRat


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Inter-RAT Cell Re-Selection

Yes


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Quality measure for Cell Selection andReselectionParameter Name QualMeas

Description This parameter indicates the quality measure for cell selectionand reselection.

Range and Step 1 CPICH Ec/No2 CPICH RSCP

Default Value 1 CPICH Ec/NoConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UltranCell->UltranCellXXX-> CellSelection and Reselection -> Advanced Parameter Manager->Measurement Quality for Cell Selection and Reselection


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Minimum Required Quality Level in the Cell

Parameter Name QQualMin

Description This parameter indicates the minimum required quality level ofthe cell which satisfies the condition of being selected orreselected by UE. When the quality measure is CPICH Ec/No,only the measured quality of the cell is over Qqualmin can thecell be selected. Its -18dB by default.If value of the parameter

is increased, its harder for the cell to satisfy the condition ofbeing selected.If value of the parameter is decreased, itseasier for the cell to satisfy the condition of being selected.

Range and Step -24 0 dB step 1dB

Default Value -18dB

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> Minimum Required QualityLevel in the Cell (Qqualmin)


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Minimum Required Received Level in the Cell

Parameter Name QRxLevMin

Description This parameter indicates the minimum required receivedpower level of the cell which satisfies the condition of beingselected or reselected by UE. When the quality measure isCPICH RSCP, only the measured received power level of thecell is over Qrxlevmin can the cell be selected.If value of the

parameter is increased, its harder for the cell to satisfy thecondition of being selected.If value of the parameter isdecreased, its easier for the cell to satisfy the condition ofbeing selected.

Range and Step -115 -25 dBm step 2dBm

Default Value -115dBmConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> Minimum Required ReceivedLevel in the Cell (Qrxlevmin)


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Maximum Allowed UL TX Power of RACH

Parameter Name MaxRACHTxPwr

Description This parameter indicates the maximum allowed ULtransmission power of RACH.If value of configuration isincreased, the maximum allowed UL transmission power ofRACH increases.If value of configuration is decreased, themaximum allowed UL transmission power of RACH decreases.

Range and Step -50 33 dBmDefault Value 24dBm

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UtranCell->UtranCellXX-> Modify

Advanced Parameter->PRACH-> Maximum Allowed UL TX

Power of RACH(dBm)


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Sintrasearch Configuration Tag

Parameter Name SIntraSearchPre

Description This parameter is a switch indicating whether S intrasearch isconfigured or not. If the value is False, S intrasearch is notconfigured to UE, and UE performs the intra-frequencymeasurement. If the value is True, S intrasearch is configured toUE, and UE judges whether to perform the intra-frequency

measurement.Range and Step 0: Not configured to UE.

1: Configured to UE.

Default Value 1: Configured to UE.

Configuration

Path

View->Configuration Management->RNC NE->RNC Radio

Resource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> S-intrasearch ConfigurationTag


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Intra-Frequency Measurement TriggerThreshold for Cell ReselectionParameter Name S intrasearch

Description This parameter indicates the intra-frequency measurement triggeringthreshold for cell reselection (S intrasearch ) used by UE to judge whetherintra-frequency measurement should be performed. When HCS is notused, if the quality of serving cell exceeds S intrasearch , UE may choose tonot perform intra-frequency measurement. If the quality of serving cellis not larger than S intrasearch or if S intrasearch is not configured, UE performsintra-frequency measurement. S intrasearch is delivered to the UE, if itsvalue is increased, its easier for the UE to trigger intra -frequencymeasurement. If value of the parameter is decreased, its harder for theUE to trigger intra-frequency measurement.

Range and Step 0 20 dB Step 2dB

Default Value 14dB

Configuration Path View->Configuration Management->RNC NE->RNC Radio ResourceManagement->UtranCell->UtranCellXX->Cell Selection andReselection-> Cell Selection and ReselectionX-> Modify AdvancedParameter-> Intra-Frequency Measurement Trigger Threshold for CellReselection (S intrasearch )


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Sintersearch Configuration Tag

Parameter Name SInterSearchPre

Description This parameter is a switch which indicates whether S intersearch is configured or not. If the value is False, S intersearch is notconfigured to UE, and UE performs the inter-frequencymeasurement. If the value is True, S intersearch is configured toUE, and UE judges whether to perform the inter-frequency

measurement.Range and Step 0: Not configured to UE.

1: Configured to UE.


Configuration

Path


Resource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> S-intersearch ConfigurationTag


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Inter-Frequency Measurement TriggerThreshold for Cell ReselectionParameter Name S intersearch

Description This parameter indicates the inter-frequency measurement triggeringthreshold for cell reselection (S intersearch ) used by UE to judge whetherinter-frequency measurement should be performed. When HCS is notused, if the quality of serving cell exceeds S intersearch , UE may choose tonot perform inter-frequency measurement. If the quality of serving cellis not larger than S intersearch or if S intersearch is not configured, UE performsinter-frequency measurement. When S intersearch is delivered to the UE, ifits value is increased, its easier for the UE to trigger inter -frequencymeasurement. If value of the parameter is decreased, its harder for theUE to trigger inter-frequency measurement.


Default Value 10dB

Configuration Path View->Configuration Management->RNC NE->RNC Radio ResourceManagement->UtranCell->UtranCellXX->Cell Selection andReselection-> Cell Selection and ReselectionX-> Modify AdvancedParameter-> Inter-Frequency Measurement Trigger Threshold for CellReselection (S intersearch )


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Inter-system Information Configuration Tag

Parameter Name OtherRATInfoPre

Description This parameter is a switch indicating whether inter-RATinformation parameters used for cell reselection areconfigured or not. If the value is False, inter-RAT informationparameters are not configured to UE, and UE performs theinter-RAT measurement. If the value is True, inter-RAT

information parameters are configured to UE, and UE judgeswhether to perform the inter-RAT measurement.

Range and Step 0: Not configured to UE.1: Configured to UE.


ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> Inter-system InformationConfiguration Tag


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Inter-System Measurement Trigger Thresholdfor Cell ReselectionParameter Name S search,RAT

Description This parameter indicates the inter-RAT measurement triggeringthreshold for cell reselection (S search,RAT ) used by UE to judge whetherinter-RAT measurement should be performed. When HCS is not used,if the quality of serving cell exceeds S search,RAT , UE may choose to notperform inter-RAT measurement. If the quality of serving cell is notlarger than S search,RAT or if S search,RAT is not configured, UE performsinter-RAT measurement. When S search,RAT is delivered to the UE, if itsvalue is increased, its easier for the UE to trigger inter -RATmeasurement. If value of the parameter is decreased, its harder for theUE to trigger inter-RAT measurement.


Default Value 6dB

Configuration Path View->Configuration Management->RNC NE->RNC Radio ResourceManagement->UtranCell->UtranCellXX->Cell Selection andReselection-> Cell Selection and ReselectionX-> Modify AdvancedParameter-> Inter-System Measurement Trigger Threshold for CellReselection (S search,RAT )


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Reselection Hysteresis 1 of Serving Cell

Parameter Name Qhyst1 s

Description This parameter indicates the hysteresis value for FDD cells incase the quality measure for cell selection and reselection isset to CPICH RSCP. In cell-ranking criterion R of cellreselection, the R value of serving cell equals to the measuredvalue plus the hysteresis value. If value of the parameter is

increased, its harder to trigger cell reselection as the R valueof the serving cell will increase. If value of the parameter isdecreased, its easier to trigger cell reselection as the R valueof the serving cell will decrease.

Range and Step 0 40 dB step 2dB

Default Value 10dBConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> Reselection Hysteresis 1 ofServing Cell (Qhyst1 s)


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Reselection Hysteresis 2 of Serving Cell

Parameter Name Qhyst2 s

Description This parameter indicates the hysteresis value for FDD cells incase the quality measure for cell selection and reselection isset to CPICH Ec/No. In cell-ranking criterion R of cellreselection, the R value of serving cell equals to the measuredvalue plus Qhyst2 s . If value of the parameter is increased, its

harder to trigger cell reselection as the R value of the servingcell will increase. If value of the parameter is decreased, itseasier to trigger cell reselection as the R value of the servingcell will decrease.

Range and Step 0 40 dB step 2dB


View->Configuration Management->RNC NE->RNC RadioResource Management->UtranCell->UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX-> Modify Advanced Parameter-> Qhyst2 s (dB)


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Quality Offset 1 Between Serving Cell andNeighbouring CellParameter Name Qoffset1 s,n

Description This parameter indicates the quality offset of the serving cell andneighbor cell when the quality measure is CPICH RSCP. Thisparameter is required when queues cells in the cell reselection rule.This parameter is broadcast to UE in SIB11. R of neighbor cell =measured signal quality of neighbor cell - this offset. If value of theparameter is increased, its harder to trigger cell reselection as the Rvalue of the neighbor cell will decrease. If value of the parameter isdecreased, its easier to trigger cell reselection as the R value ofneighbor cell will probably increase.

Range and Step OMCR -50 50 dBRNC D=P+50 0 100

Default Value 0dB

Configuration Path View->Configuration Management->RNC NE->RNC Radio ResourceManagement->UltranCell->UltranCellXXX->Neighbouring Cell ->

Advanced Parameter Manager-> Quality Offset 1(Qoffset1 s,n )Between Serving Cell and Neighbouring Cell Broadcasted in SIB11


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Quality Offset 2 Between Serving Cell andNeighbouring CellParameter Name Qoffset2 s,n

Description This parameter indicates the quality offset of the serving cell andneighbor cell when the quality measure is CPICH Ec/No. Thisparameter is required when queues cells in the cell reselection rule.This parameter is broadcast to UE in SIB11. R of neighbor cell =measured signal quality of neighbor cell - this offset. If value of theparameter is increased, its harder to trigger cell reselection as the Rvalue of the neighbor cell will decrease. If value of the parameter isdecreased, its easier to trigger cell reselection as the R value ofneighbor cell will increase.

Range and Step OMCR -50 50 dBRNC D=P+50 0 100

Default Value 0dB

Configuration Path View->Configuration Management->RNC NE->RNC Radio ResourceManagement->UltranCell->UltranCellXXX-> Neighbouring Cell ->

Advanced Parameter Manager-> Quality Offset 2(Qoffset2 s,n )Between Serving Cell and Neighbouring Cell Broadcasted in SIB11


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Cell Reselection Timer Value

Parameter Name Treselection s

Description This parameter indicates the cell reselection timer value. UEwill reselect the new cell if the new cell is best rankedaccording to the criterion R during a time interval indicated byTreselection and the new cell can be selected as new servingcell only after extension of the reselection timer. If value of the

parameter is increased, its harder to trigger cell reselection. Ifvalue of the parameter is decreased, its easier to trigger cellreselection.

Range and Step 0 31 s step 1s

Default Value 1s

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UltranCell-> UtranCellXX->CellSelection and Reselection-> Cell Selection and ReselectionX->Advanced Parameter Manager -> Cell Reselection TimerValue (Treselection s)


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Cell Barred Indicator

Parameter Name CellBarredInd

Description This parameter is cell barred indicator. If the cell barredindicator is set to Barred, UEs are not permitted to select/re -select this cell, even for emergency calls.

Range and Step 1: Barred2: Not Barred

Default Value 2: Not Barred

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UltranCell->UltranCellXXX->CellSelection and Reselection -> Cell Selection and ReselectionX-> Advanced Parameter Manager-> Cell Barred Indicator


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Intra-frequency Cell Reselection Indicator

Parameter Name InFreqReselInd

Description This parameter is intra-frequency cell reselection indicator. Ifcell is barred, if the value of this parameter is Allowed, UE isallowed to select other intra-frequency cell in case it satisfiesthe cell selection/relection condition. If it is set Not Allowed,when cell is barred, UE will not select another intra-frequency

cell.Range and Step 0: Allowed

1: Not Allowed

Default Value 0: Allowed

Configuration

Path


Resource Management->UltranCell->UltranCellXXX-> CellSelection and Reselection -> Cell Selection and ReselectionX-> Advanced Parameter Manager-> Intra-frequency CellReselection Indicator


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Broadcast in either SIB11 or SIB11bis

Parameter Name Sib11orSib11bis

Description This parameter indicates UTRAN neighbour cell broadcast ineither SIB11 or SIB11bis, the default parameter is broadcast inSIB11. If there are so many neighbour cells, and the size ofsystem message larger than 3552bit, select part of cellsbroadcast in SIB11bis

Range and Step 0: SIB111: SIB11bis

Default Value 0: SIB11

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UTRAN Cell -> UTRAN Cell xxx ->

Neighbouring Cell ->Neighbouring Cell xxx -> Modify ->Broadcast in either SIB11 or SIB11bis


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Measurement Priority of Neighboring Cell

Parameter Name MeasPrio

Description This parameter indicates the measurement priority of theneighboring cell. The highest priority is 0, the lowest priority is2.

Range and Step 0 2

Default Value 0

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->UTRAN Cell -> UTRAN Cell xxx ->Neighbouring Cell -> Measurement Priority of NeighboringCell


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Content

UMTS Cell Selection and Reselection ParameterUMTS Intra-Frequency Handover ParameterUMTS Inter-Frequency Handover Parameter

UMTS Inter-RAT Handover Parameter


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Intra-Frequency Handover

The intra-frequency handover can be triggeredbased on Ec/No or RSCP measurement throughthe parameter IntraMeasQuan.

Active set

Monitored setDetected set


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Intra-Frequency Measurement

When conducting intra-frequency measurement,the UE needs to implement layer 3 filter for themeasurement results to avoid measurementfluctuation:

Fn = (1-a) F n-1 + a M n Fn-1 refers to the result of last filterFn refers to the result of current measurement filterM

nrefers to current measurement result

a = 1/2 (k/2) refers to the filter coefficientK refers to the filter factor


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Neighboring Cells Configuration

If the number of intra-frequency neighboring cellsexceeds 32, it needs to delete some cells toensure that there are only 32 intra-frequencyneighboring cells.

Priority combination strategySorting strategy


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Cell Priority

The OMCR configuration parameter MeasPrio isused to define the priority of adjacent cells andincludes three values:

0: High priority

1: Medium priority2: Low priority

Source Cell

Priority 0

Priority 1

Priority 2


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Intra-frequency measurement events

A series of intra-frequency measurement eventsare defined in 3GPP as the judgment and triggercriteria for intra-frequency handover.

Event 1A: A Primary CPICH enters the Reporting

Range.Event 1B: A Primary CPICH leaves the ReportingRange.Event 1C: A Non-active Primary CPICH becomes better

than an active Primary CPICH.Event 1D: The best cell changes.


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Event 1A

R1a : Refers to the reporting range of Event 1A. It is used to control theextent of difficulty in adding a cell into the active set.H1a : Refers to the reporting hysteresis of Event 1A. It is used to controlthe extent of difficulty in adding a cell into the active set.

Mnew : Refers to measurement of the to-be-evaluated cell outside theactive set.CIO new : Refers to offset of cell outside active set in relation to other.Mi: Refers to the mean measurement value of other cells except thebest cell in active set.N A: Refers to the number of other cells except the best cell in activeset.Mbest : Refers to the measurement of the best cell in the active set.W: Refers to the weight proportion of the best cell to the rest cells inthe active set in evaluation standards.

/2)H(RLogM10W)(1MLog10WCIOLogM10 1a1aBestN

1iiNewNew

A


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Event 1A


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Event 1B

R1b : Refers to the reporting range of Event 1B. It is used to control theextent of difficulty in dropping a cell from the active.H1b : Refers to the reporting hysteresis of Event 1B. It is used to controlthe extent of difficulty in dropping a cell from the active set.

Mold : Refers to measurement of the to-be-evaluated cell in the activeset.CIO old : Refers to offset of cell in active set in relation to other cells.Mi: Refers to the mean measurement value of other cells except thebest cell in active set.

N A: Refers to the number of other cells except the best cell in activeset.Mbest : Refers to the measurement of the best cell in the active set.W: Refers to the weight proportion of the best cell to the rest cells inthe active set in evaluation standards.

/2)H(RLogM10W)(1MLog10WCIOLogM10 1b1bBestN

1iiOldOld

A


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Event 1B


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Event 1C

H1c : Refers to the reporting hysteresis of Event 1C. It isused to control the extent of difficulty in replacing a cell inthe active set.Mnew : Refers to measurement of the to-be-evaluated celloutside the active set.MInAS : Refers to the cell with poorest quality in the activeset.CIO new : Refers to offset of the to-be-evaluated cell outsidethe active set in relation to other cells.CIO InAS : Refers to offset of cell with poorest quality in

active set in relation to other cells.

/2HCIOLogM10CIOLogM10 1cInASInASNewNew


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Event 1C


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Event 1D

MNotbest : Refers to the measurement of the to-be-evaluatedcell within or outside the active set.

CIO Notbest : Refers to the offset of the to-be-evaluated cellwithin the active set or outside the active set in relation toother cells.CIO best : Refers to offset of the to-be-evaluated cell in theactive set in relation to other cells.Mbest : Refers to the measurement of the to-be-evaluatedcell in the active set.H1d : Refers to Event 1D report hysteresis.

/2HCIOLogM10CIOLogM10 1dBestBestNotBestNotBest


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Event 1D

Ec_2

Ec_1

1A

R1a-H1a/2 H1d/2

1D

R1b+H1b/2

1B

1A

1D


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Cell Individual Offset

For each cell that is monitored, an offset can be assigned with inbandsignalling. The offset can be either positive or negative. The offset isadded to the measurement quantity before the MS dose evaluate whilean event has occurred.Offset of neighbor cell parameter, CPICH Ec/No, can be set as theoffset which MS pluses it to neighbor cell measurement result, CPICHEc/No, before compares it with reporting principle value, Ec/No.Cell individual offsets can be regarded as the tool of moving cell edge.


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Time-To-Trigger

If a to-be-evaluated cell meets the reporting range orthreshold of certain event, the condition must be met withina period of time before the reporting of this event to avoidintra-frequency event misreport due to the fluctuation ofradio quality.

Reportingevent 1A

Measurementquantity

Time

TrigTime[MAX_INTRA_MEAS_EVENT]

P CPICH 1 RptRange[MAX_INTRA_ MEAS_EVENT]

P CPICH 2

P CPICH 3


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Intra-Frequency Handover

Time

Ec/No

P CPICH 1

P CPICH 2

ReportingEvent 1D

ReportingEvent 1B

ReportingEvent 1A

TrigTime1A TrigTime1D

RptRange 1A Hysteresis 1A /2

Add P CPICH2 in Active Set

Change the bestcell to P CPICH2

TrigTime1B

Hysteresis 1D /2

RptRange 1B +Hysteresis 1B /2

Drop P CPICH 1from Active Set


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Softer Handover


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Intra-RNC Soft Handover


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Inter-RNC Soft HandoverSRNCDNODEB

SNODEBUE

RADIO LINK SETUP REQUEST

RADIO LINK SETUP RESPONSE

RADIO LINK DELETION REQUEST

RADIO LINK DELETION RESPONSE

DRNC

RELOCATION REQUIRED

RELOCATION COMMAND

CN

RELOCATION REQUEST

RELOCATION REQUEST ACKNOWLEDGE

RELOCATION DETECT

RELOCATION COMPLETE

IU RELEASE COMMAND

IU RELEASE COMPLETE

RELOCATION COMMIT

ACTIVE SET UPDATE

ACTIVE SET UPDATE COMPLETE


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Inter-RNC Soft Handover(Iur)


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Filter Coefficient

ParameterName

FilterCoeff

Description This parameter indicates the filtering factor that UE performs the L3filtering on the measurement results of the intra-frequencymeasurement. The smaller the value of the filtering factor is, thelarger effect the current measurement result will have on the

measurement result reported to RNC (periodical report) or the judgment (event report).

Range andStep

0 1 2 3 4 5 6 7 8 9 11 13 15 17 19

Default Value UE Event Report Parameters for CPICH Ec/No: 2UE Event Report Parameters for CPICH RSCP: 3

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Filter Coefficient


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ParameterName

MeasPrio

Description This parameter indicates the measurement priority of theneighbouring cell. The priority of the neighbouring cell can be set to0, 1, or 2, of which, 0 represents the highest priority and 2represents the lowest priority. The priority of the neighbouring is set

by the configuration personnel according to the signal strength anddistance of the neighboring cell.

Range andStep

0 2

Default Value 0

ConfigurationPath View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX->Neighbouring Cell-> Neighbouring Cell XXX-> MeasurementPriority of Neighboring Cell


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Report Criteria

ParameterName

RptCrt

Description This parameter indicates the reporting criteria of the intra-frequency measurement, including the event reporting criteria andthe periodical reporting criteria.

Range and

Step

1: Event Reporting Criteria

2: Periodical Reporting CriteriaDefault Value UE Event Report Parameters for CPICH Ec/No: Event Reporting

CriteriaUE Event Report Parameters for CPICH RSCP: Event ReportingCriteria

ConfigurationPath View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Report Criteria


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Measurement Quantity

ParameterName

MeasQuantity

Description This parameter indicates the measurement quantity of the intra-frequency measurement that UE performs.

Range andStep

0 CPICH Ec/No1 CPICH RSCP

2 PathlossDefault Value UE Event Report Parameters for CPICH Ec/No: CPICH Ec/No

UE Event Report Parameters for CPICH RSCP: CPICH RSCP

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-

frquence Measurement Configuration-> Measurement Quantity


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Reporting Range Constant Event 1A/1B

ParameterName

RptRange

Description Event 1A is easier to be triggered when the reporting rangeconstant for event 1A is set to a larger value; and vice verse.Event 1B is easier to be triggered when the reporting rangeconstant for event 1B is set to a smaller value; and vice verse.

Range andStep

0 14.5 dBstep 0.5dB

Default Value UE Event Report Parameters for CPICH Ec/No: [3,5,0,0,0,0,0]UE Event Report Parameters for CPICH RSCP: [6,8,0,0,0,0,0]

Configuration

Path


Resource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration->Reporting Range ConstantEvent 1A/1B(dB)


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Hysteresis

Parameter

Name

Hysteresis

Description This parameter indicates the hysteresis when judging whether totrigger the event. This parameter avoids the change of the triggerstatus due to very small change. This parameter is related to themeasurement quantity and the event type.

Range andStep

0 7.5 dBstep 0.5dB

Default Value UE Event Report Parameters for CPICH Ec/No: [0,0,4,4,2,2,4]UE Event Report Parameters for CPICH RSCP: [4,4,6,6,4,4,6]

Configuration

Path


Resource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Hysteresis


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Cell Individual Offset (utranCell)

Parameter

Name

CellIndivOffset(utranCell)

Description This parameter defines the individual offset of cells in the active setrelative to other cells. When the value is positive, a positive value isadded to the measurement result. If the value is negative, anegative value is added to the measurement result.

Range andStep

-10 10 dB step 0.5dB

Default Value 0dB

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX->Modify

Advanced Parameter->Utran Cell->Cell Individual Offset(dB)


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Cell Individual Offset (utranRelation)

Parameter

Name

CellIndivOffset(utranRelation)

Description This parameter defines the individual offset of cells outside theactive set relative to other cells. When the value is positive, apositive value is added to the measurement result. If the value isnegative, a negative value is added to the measurement result.

Range andStep

-10 10 dB step 0.5dB

Default Value 0dB

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX-

>Neighbouring Cell->Neighbouring Cell XXX->Modify AdvancedParameter->Cell Individual Offset(dB)


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Weight for Event 1A/1B

Parameter

Name

W

Description This parameter is used for the quality judgment of event 1A and 1B.This parameter indicates the weight of the best cell in the quality

judgment and is related to the measurement quantity and the eventtype.

Range andStep

0.0 2.0 step 0.1

Default Value UE Event Report Parameters for CPICH Ec/No: [0.0 0.0 0.0 0.0 0.00.0 0.0]UE Event Report Parameters for CPICH RSCP: [0.0 0.0 0.0 0.0 0.00.0 0.0]

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Weight for Event 1A/1B


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Time to Trigger

Parameter

Name

TrigTime

Description This parameter indicates the time difference between the time thatthe event generation is detected and the time that the event isreported. The event is triggered and the measurement report isreported only when the event generation is detected and still meetsthe requirements of event triggering after Time to trigger.

Range andStep

0 10 20 40 60 80 100 120 160 200 240 320 640 1280 2560 5000 ms

Default Value UE Event Report Parameters for CPICH Ec/No:[200,640,320,320,200,200,320]msUE Event Report Parameters for CPICH RSCP:[200,200,200,200,200,200,200]ms

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Time to Trigger(ms)


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Amount of Reporting for Event 1A/1B/1C

Parameter

Name

EvtRptAmount

Description This parameter indicates the reporting amount for event 1A/1B/1C.Once Event 1A/1C meets the reporting range of quality standards,the UE will report Event 1A/1C periodically until this event does notmeet reporting conditions or the reporting times reach themaximum allowed times.

Range andStep

1 2 4 8 16 32 64 Infinity

Default Value UE Event Report Parameters for CPICH Ec/No: [4, 4, 4, -, -, -, 4]UE Event Report Parameters for CPICH RSCP: [4, 4, 4, -, -, -, 4]

ConfigurationPath View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Amount of Reporting forEvent 1A/1B/1C/1J


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Reporting Interval for Event 1A/1B/1C

Parameter

Name

EvtRptInterval

Description This parameter indicates the reporting interval for event 1A/1B/1C.Once Event 1A/1C meets the reporting range of quality standards,the UE will report Event 1A/1C periodically until this event does notmeet reporting conditions or the reporting times reach themaximum allowed times.

Range andStep

0 250 500 1000 2000 4000 8000 16000 ms

Default Value UE Event Report Parameters for CPICH Ec/No: [2000, 2000, 2000,-, -, -, 2000] msUE Event Report Parameters for CPICH RSCP: [2000, 2000, 2000,-, -, -, 2000] ms

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Reporting Interval forEvent 1A/1B/1C/1J(ms)

Reporting Deactivation Threshold for Event


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Reporting Deactivation Threshold for Event1AParameter

Name

RptDeactThr

Description This parameter indicates the maximum number of the cells allowedin the active set. When the UE detects that one cell in themonitoring set satisfies the trigger threshold of event 1A, itdetermines whether the number of the cells in the current active setgreater than the value indicated by this parameter at first. If yes,the event 1A is not triggered.

Range andStep

0 1 2 3 4 5 6 7

Default Value UE Event Report Parameters for CPICH Ec/No: [2, -, -, -, -, -, -]UE Event Report Parameters for CPICH RSCP: [2, -, -, -, -, -, -]

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Intra-frquence Measurement Configuration-> Reporting DeactivationThreshold for Event 1A


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Detected Set Handover Switch

Parameter

Name

DetSetHoSwch

Description The measurement control message that contains the detected setinformation is sent only when the DetSetHO switch of the best cellin the current active set is set to 1 and the current number of intra-frequency neighbouring cells is less than 32.

Range andStep 0: Closed1: Open

Default Value 1: Open

ConfigurationPath


Advanced Parameter->Utran Cell->Detected Set Handover Switch


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Content




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Carrier evaluation standard

Q frequency j : Refers to active set quality of carrier j, that is, themeasurement result of carrier j.Mfrequency j : Refers to the physical measurement value of the active setof carrier j.Mi j: Refers to the physical measurement value of cell i of carrier j.N A j: Refers to the number of cells (excluding best cell) in the active setof carrier j.MBest j : Refers to the measurement result of the best cell in the active

set of carrier j.W j: Refers to the weight of the best cell in the active set of carrier jduring carrier measurement.

jBest j

N

1i ji j jfrequencyfrequencyj LogM10)W(1MLog10WLogM10Q

j A


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Inter-frequency measurement events

A series of inter-frequency measurement events aredefined in 3GPP as the judgment and trigger criteria forinter-frequency handover:

Event 2A: The best carrier frequency changes.Event 2B: The quality of working carrier frequency is lower than a

threshold and that of non-working carrier frequency is higher than athreshold.Event 2C: The quality of non-working carrier frequency is higherthan a threshold.Event 2D: The quality of working carrier frequency is lower than a

threshold. Event 2E: The quality of non-working carrier frequency is lowerthan a threshold.Event 2F: The quality of working carrier frequency is higher than athreshold.


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Event 2A

QNotBest : Refers to the measurement result of current non-best carrier frequency.

QBest : Refers to the measurement result of current bestcarrier frequency.H2a : Refers to handover decision hysteresis parameter ofEvent 2A.

/2HQQ 2aBestNotBest


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Event 2A

Ec_f2

Ec_f1

H2a/2

2A

2A

t

2


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Event 2B

QNon used : Refers to the measurement result of current non-working carrier frequency.TNon used 2b : Refers to the absolute threshold of good qualityof non-working carrier frequency in Event 2B decision.H2b : Refers to handover decision hysteresis parameter ofEvent 2B.Q

Used: Refers to the measurement result of current working

carrier frequency.TUsed 2b : Refers to the absolute threshold of poor quality ofworking carrier frequency in Event 2B decision.

/2HTQ 2b2busedNonusedNon /2HTQ 2b2bUsedUsed and

E 2B


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Event 2B

Ec_f2

Ec_f1

Tnon used 2b+ H2b/2

2B

2A

t

Tused 2b- H2b/2

E 2C


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Event 2C

QNon used : Refers to the measurement result of current non-working carrier frequency.

TNon used 2c : Refers to the absolute threshold of good qualityof non-working carrier frequency in Event 2C decision.H2c : Refers to handover decision hysteresis parameter ofEvent 2C.

/2HTQ 2c2cusedNonusedNon

E 2C


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Event 2C

Ec_f2

Ec_f1

2Ct

Tnon used 2b+ H2c/2

E 2D


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Event 2D

QUsed : Refers to the measurement result of current workingcarrier frequency.T

Used 2d: Refers to the absolute threshold of poor quality of

working carrier frequency in Event 2D decision.H2d : Refers to handover decision hysteresis parameter ofEvent 2D.

/2HTQ 2d2dUsedUsed

E t 2E


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Event 2E

QNon used : Refers to the measurement result of current non-working carrier frequency.T

Non used 2e: Refers to the absolute threshold of good quality

of non-working carrier frequency in Event 2E decision.H2e : Refers to handover decision hysteresis parameter.

/2HTQ 2e2eusedNonusedNon

E t 2F


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Event 2F

QUsed : Refers to the measurement result of current workingcarrier frequency.T

Used 2f : Refers to the absolute threshold of poor quality of

working carrier frequency in Event 2F decision.H2f : Refers to handover decision hysteresis parameter ofEvent 2F.

/2HTQ 2f 2f UsedUsed

C d M d E bli g/Di bli g


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Compressed Mode Enabling/Disabling

Among all inter-frequency measurement events,Event 2D and Event 2F only involve measurementof working carrier frequencies, so the compressedmode is not required during measurement and

extra overhead will not be brought about to bothUE and RNC. The compressed mode can beenabled and disabled based on the definition of2D/2F.

E t f i t f q h d


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Event of inter-frequency handover

The same cell can only use one of Event 2A,Event 2B and Event 2C to trigger inter-frequencyhandover. Which of the three events will be usedis based on the inter-frequency handover

recommendation strategy parameterInterHoTactic.

Handling of Event 2E


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Handling of Event 2E

All non-working carrier frequencies report Event2E, indicating that radio quality of all inter-frequency adjacent cells is poor and UMTSsystem quality deteriorates. Issue the Inter-RAT

measurement Event 3A/3C.

Inter Frequency Handover


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Inter-Frequency Handover

Inter Frequency Handover


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Inter-Frequency Handover

Ec_f1

Ec_f2

2D t2F 2D

2F

2A

2D

RSCP

Intra RNC Hard Handover


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Intra-RNC Hard Handover



PHYSICAL CHANNEL RECONFIGURATION

PHYSICAL CHANNEL RECONFIGURATION COMPLETE



UE NODEB2 NODEB1 RNC

Inter RNC Hard Handover


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Inter-RNC Hard HandoverSRNCDNODE BSNODE BUE



PHYSICAL CHANNEL RECONFIGURATION

PHYSICAL CHANNEL RECONFIGURATION COMPLETE



DRNC

RELOCATION REQUIRED

RELOCATION COMMAND

CN

RELOCATION REQUEST

RELOCATION REQUEST ACKNOWLEDGE

RELOCATION DETECT

RELOCATION COMPLETE

IU RELEASE COMMAND

IU RELEASE COMPLETE

RADIO LINK RESTORE INDICATION

Filter Coefficient (Inter)


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Filter Coefficient (Inter)

Parameter

Name

FilterCoeff(Inter)

Description This parameter indicates the filtering factor that UE performs the L3filtering on the measurement results of the inter-frequencymeasurement. The smaller the value of the filtering factor is, thelarger effect the current measurement result will have on themeasurement result reported to RNC (periodical report) or the

judgment (event report).

Range andStep

0 1 2 3 4 5 6 7 8 9 11 13 15 17 19

Default Value UE Inter-frequency Event Report Parameters for CPICH Ec/No: 3UE Inter-frequency Event Report Parameters for CPICH RSCP: 3

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-frequence Measurement Configuration-> Filter Coefficient



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(Inter)Parameter

Name

MeasPrio(Inter)

Description The priority of a neighbouring cell can be set to 0, 1, and 2, ofwhich, 0 represents the highest priority and 2 represents the lowestpriority. The priority of the neighbouring is set by the configurationpersonnel according to the signal strength and the distance of theneighboring cell.

Range andStep

0 2

Default Value 0

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX->Neighbouring Cell-> Neighbouring Cell XXX->MeasurementPriority of Neighboring Cell

Report Criteria (Inter)


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Report Criteria (Inter)

Parameter

Name

RptCrt(Inter)

Description This parameter indicates the criteria of reporting the inter-frequency measurement, including the Event Reporting andperiodical reporting.

Range and

Step

1: Inter-frequency Event Reporting Criteria

2: Periodical Reporting CriteriaDefault Value UE Inter-frequency Event Report Parameters for CPICH Ec/No:

Inter-frequency Event Reporting CriteriaUE Inter-frequency Event Report Parameters for CPICH RSCP:Inter-frequency Event Reporting Criteria

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-frquence Measurement Configuration-> Report Criteria

Measurement Quantity (Inter)


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Measurement Quantity (Inter)

Parameter

Name

MeasQuantity(Inter)

Description This parameter indicates the measurement quantity of the inter-frequency measurement that UE performs.

Range andStep

0 CPICH Ec/No1 CPICH RSCP

Default Value UE Inter-frequency Event Report Parameters for CPICH Ec/No:CPICH Ec/NoUE Inter-frequency Event Report Parameters for CPICH RSCP:CPICH RSCP

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-frquence Measurement Configuration-> Measurement Quantity

Weight of the Currently Used Frequency for


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2A/2B/2D/2FParameter

Name

Wused

Description This parameter is used for quality judgment of the currently usedcarrier frequency. It indicates the weight of the best RNC in thequality judgment (only for event 2a/2b/2d/2f) and is related to themeasurement quantity and the event type.

Range andStep 0.0 2.0 step 0.1

Default Value UE Inter-frequency Event Report Parameters for CPICH Ec/No:[0.0, 0.0, 0.0,0.0,0.0,0.0]UE Inter-frequency Event Report Parameters for CPICH RSCP:[0.0, 0.0, 0.0,0.0,0.0,0.0]

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-frequence Measurement Configuration-> Weight of the CurrentlyUsed Frequency for 2A/2B/2D/2F

Absolute Threshold of the Quality of the


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Currently Used Frequency for 2B/2D/2FParameter

Name

ThreshUsedFreq

Description This parameter indicates the absolute threshold that should beconfigured for event 2b/2d/2f.In the case of event 2D, the less thethreshold configured, the more difficult the event 2D been triggered.In the case of event 2F, the less the threshold configured, theeasier the event 2F been triggered.

Range andStep

CPICH RSCP -115 -25 dBm step 1dBmCPICH Ec/No -24 0 dB step 1dB

Default Value UE Inter-frequency Event Report Parameters for CPICH Ec/No: [-24,-13, -24,-13,-24,-8]dBUE Inter-frequency Event Report Parameters for CPICH RSCP: [-115,-95, -115,-95,-115,-80]dBm

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-frequence Measurement Configuration-> Absolute Threshold of theQuality of the Currently Used Frequency for 2B/2D/2F

Hysteresis (Inter)


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Hysteresis (Inter)

Parameter

Name

Hysteresis(Inter)

Description This parameter indicates the hysteresis used when judgingwhether to trigger the event. This parameter avoids the triggerstatus change due to very small change. Different events areconfigured separately and the events can be configured withdifferent values.

Range andStep

0 14.5 dB step 0.5dB

Default Value UE Inter-frequency Event Report Parameters for CPICH Ec/No:[4,4,4,4,4,4]dBUE Inter-frequency Event Report Parameters for CPICH RSCP:[4,4,4,4,4,4]dB

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-frequence Measurement Configuration-> Hysteresis(dB)

Time to Trigger (Inter)


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Time to Trigger (Inter)

Parameter

Name

TrigTime(Inter)

Description This parameter indicates the time difference between the time thatthe event generation is detected and the time that the event isreported. The event is triggered and the measurement report isreported only when the event generation is detected and still meetsthe requirements of event triggering after Time to trigger.

Range andStep

0 10 20 40 60 80 100 120 160 200 240 320 640 1280 2560 5000 ms

Default Value UE Inter-frequency Event Report Parameters for CPICH Ec/No:[100,100,100,640,100,640]UE Inter-frequency Event Report Parameters for CPICH RSCP:[100,100,100,640,100,640]

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-frequency Measurement Configuration-> Time to Trigger(ms)

Inter- frequency Handover Tactic


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Inter frequency Handover Tactic

Parameter

Name

InterHoTactic

Description This parameter indicates the event that is used to trigger the inter-frequency handover. The default value of the parameter is 2A, thatis, the handover can be triggered when the conditions for bestcarrier frequency change are satisfied.

Range andStep 0: Algorithm Deciding1: 2A Event Trigger2: 2B Event Trigger3: 2C Event Trigger

Default Value 1: 2A Event Trigger

ConfigurationPath


Advanced Parameter->Utran Cell-> Inter- frequency HandoverTactic

Share Cover Indication


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Parameter

Name

ShareCover

Description This parameter describes the neighboring relationship of thecurrent cell and the neighboring cell. The relationship between theneighbouring cell and the current cell may be Neighbor, Overlap,Covers, or Contained in.

Range andStep 0: Neighbor1: Overlap2: Covers3: Contained in

Default Value 0: Neighbor

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX->Neighbouring Cell->Neighbouring Cell XXX -> Share CoverIndication

Inter Frequency or Inter RAT Handover


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SwitchParameter

Name

IfOrRatHoSwch

Description This parameter indicates how to perform neighbor measurement ifa cell has both inter-frequency and inter-RAT cells as its neighbors.

Range andStep

0: Turn off Inter-frequency and Inter-RAT Handover1: Only Inter Frequency

2: Only Inter Rat3: Inter Frequency is Prior to Inter Rat

Default Value 3: Inter Frequency is Prior to Inter Rat

ConfigurationPath


Advanced Parameter->Utran Cell->Inter Frequency or Inter RATHandover Switch

Content


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Content



Inter-RAT Transition State Diagram


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Inter RAT Transition State Diagram

Inter-RAT measurement events


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Inter RAT measurement events

3GPP defies a series of Inter-RAT measurementevents. An UE reports the corresponding eventswhen defined conditions are met.

3A: The currently used UTRAN carrier quality is lowerthan a threshold, and the quality of other radio systemsis higher than a threshold. It is used for decision ofInter-RAT handover.3C: The quality of other radio systems is higher than athreshold. It can be used for Inter-RAT handoverdecision.

Event 3A


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Event 3A

Q used : indicates the estimated quality of the used frequencyof the UTRAN.T

used: indicates the absolute threshold of the currently used

frequency difference.H3a : is the hysteresis parameter for 3A event decision.MOther RAT : is the quality measurement result of othersystems.CIO Other RAT : is the quality offset of other system cells.TOther RAT : is the absolute threshold of other systems.

/2HTQ 3aUsedUsed /2HTCIOM 3aRATOther RATOther RATOther and

Event 3C


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Event 3C

MOther RAT : is the quality measurement result of othersystems.CIO Other RAT : is the quality offset of other system cells.TOther RAT : is the absolute threshold of other systems.H3c : is the hysteresis parameter for 3C event decision.

/2HTCIOM 3cRATOther RATOther RATOther

Processing of Inter-RAT Events


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g

In a cell, inter-RAT handover can only be triggeredby 3A or 3C event, which is controlled by Inter-RAT handover tactic RatHoTactic.When only PS service exists, adopt cell

reselection process of PS service handover.When CS service and PS service existsimultaneity, suspend PS service firstly, thenhandover CS service to GSM and handover PSservice to GSM in sequence.

Inter-RAT Handover


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The RNC transmits the 2D ad 2F event configuration to theUE when the service is set up. If the UE reports a 2Devent, that is, the current carrier is in poor signal quality,the UE reports a 2E event after inter-frequencymeasurement is started (that is, the signal quality of the

measured inter-frequency neighboring cell is also poor),the RNC needs to configure and start Inter-RATmeasurement 3A or 3C event to the UE, and then performsthe corresponding decision process for Inter-RAThandover according to the 3A, or 3C event subsequentlyreported by the UE.

Inter-RAT Handover


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Time

CPICHRSCP/ RSSI

UMTS Cell

GSM Cell

ReportingEvent 3a

ReportingEvent 2d TrigTime2d TrigTime3a

Perform measurement ofGSM/GPRS neighbor cell

Perform Inter-RAThandover

ThreshUsedFreq 2d Hysteresis 2d /2

ThreshSys 3a + Hysteresis 3a /2

Thresh 3a Hysteresis 3a /2

Inter-RAT Handover


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Ec_f1

GSM

2D t2F 2D

2F

3A

2D

3A(G)

RSCP

3A(W)

Inter-frequency + Inter-RAT Handover


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q y

Ec_f1

GSM

Ec_f2

2D t2F 2D

2F

2E 3A

2D 2E

3A(G

)

3A(W)

RSCP

UMTS to GSM CS service handover


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RNC NODE BUE

HANDOVER FROM UTRAN COMMAND

HANDOVER COMPLETE

CN

RELOCATION REQUIRED

RELOCATION COMMAND

BSC

HANDOVER REQUEST

HANDOVER DETECT

HANDOVER COMPLETE

IU RELEASE COMMAND

IU RELEASE COMPLETE

HANDOVER REQUEST ACK



UMTS to GSM PS service handover


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SRNCNODE BUE CN

IU RELEASE COMPLETE

RADIO LINK DELETE REQUEST

RADIO LINK DELETE RESPONSE

IU RELEASE COMMAND

CELL CHANGE ORDER FROM UTRAN

UTRAN Filter Coefficient(Rat)


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( )

Parameter

Name

FilterCoeff(Rat)

Description This parameter indicates the filtering factor that UE performs the L3filtering on the UTRAN measurement results of the inter-RATmeasurement. The smaller the filtering factor, the larger the effectof the measurement on the final result.

Range andStep

0 1 2 3 4 5 6 7 8 9 11 13 15 17 19

Default Value UE Event Report Parameters for Own System CPICH Ec/No: 3UE Event Report Parameters for Own System CPICH RSCP: 3

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-Rat Measurement Configuration Information->UTRAN FilterCoefficient

GSM Filter Coefficient(Rat)


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( )

Parameter

Name

GsmFilterCoeff

Description This parameter indicates the filtering factor that UE performs the L3filtering on the GSM measurement results of the inter-RATmeasurement. The smaller the filtering factor, the larger the effectof the measurement on the final result.

Range andStep

0 1 2 3 4 5 6 7 8 9 11 13 15 17 19

Default Value UE Event Report Parameters for Own System CPICH Ec/No: 3UE Event Report Parameters for Own System CPICH RSCP: 3

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Modify Advanced Parameter->UE Inter-Rat Measurement Configuration Information->GSM FilterCoefficient

Measurement Priority of Neighboring GSMCell


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CellParameter

Name

MeasPrio(Rat)

Description This parameter indicates the measurement priority of theneighboring cell. 0 presents the highest priority and 2 presents thelowest priority. This parameter should be configured by the networkplanning engineer according to the actual conditions of the currentnetwork, including the quality and geographic position of the inter-RAT neighbouring cell.

Range andStep

0 2

Default Value 0

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX->GSMNeighbouring Cell->GSM Neighbouring Cell XXX-> MeasurementPriority of Neighboring GSMCell

Report Criteria


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Parameter

Name

RptCrt(Rat)

Description This parameter indicates the criteria of reporting the inter-RATmeasurement, including the Event Reporting and PeriodicalReporting.

Range andStep

1: Inter-RAT Event Reporting Criteria2: Periodical Reporting Criteria

Default Value UE Event Report Parameters for Own System CPICH Ec/No: Inter-RAT Event Reporting CriteriaUE Event Report Parameters for Own System CPICH RSCP: Inter-RAT Event Reporting Criteria

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-Rat Measurement Configuration Information-> Report Criteria

UTRAN Measurement quantity


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Parameter

Name

OwnMeasQuantity

Description This parameter indicates the measurement quantity of the inter-RAT measurement that UE performs. After a new inter-RATmeasurement configuration index is added, the measurementquantity is fixed when the function of the set of the inter-RATmeasurement parameters is selected.

Range andStep

0: CPICH Ec/No1: CPICH RSCP

Default Value UE Event Report Parameters for Own System CPICH Ec/No:CPICH Ec/NoUE Event Report Parameters for Own System CPICH RSCP:

CPICH RSCPConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-Rat Measurement Configuration Information->UTRANMeasurement quantity

Weight of the UTRAN System for 3A


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Parameter

Name

W(Rat)

Description This parameter indicates the weight of the best cell in the quality judgment of event 3a. It is used in judging the quality of the UTRANsystem in inter-RAT measurement.

Range andStep

[0.0, 2.0], step 0.1

Default Value UE Event Report Parameters for Own System CPICH Ec/No: [0, -,-, -]UE Event Report Parameters for Own System CPICH RSCP: [0, -,-, -]

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-RAT Measurement Configuration Information->Weight of theUTRAN System for 3A

Absolute Threshold of the Quality of UTRANCell for 3A


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Cell for 3AParameter

Name

Thresh(Rat)

Description This parameter indicates the absolute threshold of the UTRAN cellquality that is used by UE to judge event 3a. The range and unit ofthe parameter are related to the measurement quantity of the cellsof the UTRAN system. The smaller the value configured, the moredifficult the event 3a been reported.

Range andStep

CPICH RSCP: [-115, -25] dBm, step 1dBmCPICH Ec/No: [-24, 0] dB, step 1dB

Default Value UE Event Report Parameters for Own System CPICH Ec/No: [-6, -24,-24,-24]UE Event Report Parameters for Own System CPICH RSCP: [-95,

-115,-115,-115]ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-RAT Measurement Configuration Information->Absolute Thresholdof the Quality of UTRAN Cell for 3A

Absolute Threshold of the Quality of OtherRAT for 3A/3B/3C


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RAT for 3A/3B/3CParameterName

ThreshSys

Description This parameter indicates the absolute threshold used when judging thequality of other RAT configured for event 3a/3b/3c. The value rangeand unit of this parameter are related to the measurement quantity ofthe cells of other systems. At present, the measurement quantity canonly be GSM Carrier RSSI of the GSM system, which corresponds to

the CPICH RSCP of the UMTS system.Range andStep

CPICH RSCP -115 -25 dBm step 1dBmCPICH Ec/No -24 0 dB step 1dB

Default Value UE Event Report Parameters for Own System CPICH Ec/No: [-90, -95,-95, -115] dBmUE Event Report Parameters for Own System CPICH RSCP: [-90, -95,-95, -115] dBm

ConfigurationPath

View->Configuration Management->RNC NE->RNC Radio ResourceManagement-> Modify Advanced Parameter->UE Inter-RATMeasurement Configuration Information-> Absolute Threshold of theQuality of Other RAT for 3A/3B/3C

Hysteresis(Rat)


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Parameter

Name

Hysteresis(Rat)

Description This parameter indicates the hysteresis used when judgingwhether the event meets the conditions of been triggered. Thisparameter is related to the measurement quantity and the eventtype. If a small hysteresis is configured, the corresponding eventwill be reported in a high probability; and vice versa.

Range andStep

[0., 7.5] dB, step 0.5 dB

Default Value UE Event Report Parameters for Own System CPICH Ec/No:[4,4,2,4] dBUE Event Report Parameters for Own System CPICH RSCP:

[4,4,4,4] dBConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-RAT Measurement Configuration Information-> Hysteresis

Cell individual offset(gsmRelation)


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Parameter

Name

CellIndivOffset(gsmRelation)

Description This parameter indicates the individual offset of GSM cells. Whenthe value is positive, a positive value is added to the measurementresult to be judged. If the value is negative, a negative value isadded to the measurement result to be judged. Through theconfiguration of the individual offset of a single cell, the triggerdifficulty of the cell can be adjusted to meet the actual requirementsof network planning, thus avoiding the need to modify the globalhandover parameters.

Range andStep

[-10, 10] dB, step 0.5


View->Configuration Management->RNC NE->RNC RadioResource Management->External GSM Cell->GSM Cell XXX->Modify Advanced Parameter->Cell Individual Offset(dB)

Time to Trigger(Rat)


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Parameter

Name

TrigTime(Rat)

Description This parameter indicates the time difference between the time thatthe event generation is detected and the time that the event isreported. The event can be triggered and reported only when theevent is detected and still meets all requirements of eventtriggering after Time to trigger. The larger the value is, the stricterthe judgment is for the event to be triggered.

Range andStep

(0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280,2560, 5000) ms

Default Value UE Event Report Parameters for Own System CPICH Ec/No:[100,100,100,100] ms

UE Event Report Parameters for Own System CPICH RSCP:[100,100,100,100] ms

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->UE Inter-RAT Measurement Configuration Information-> Time to Trigger

Inter-Rat Handover Tactic


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Parameter

Name

RatHoTactic

Description Event 3C can be triggered when the quality of the inter-RAT carrierfrequency signal is higher than a certain value. In contrast, thetrigger of event 3A requires an additional condition, that is, thequality of the carrier frequency signal of the current RAT must beless than a certain value. Hence, the inter-RAT handover can betriggered more easily when the parameter is set to 3C EventTrigger.

Range andStep

0: Algorithm Deciding1: 3A Event Trigger2: 3C Event Trigger

Default Value 1: 3A Event TriggerConfigurationPath


Advanced Parameter->Utran Cell->Inter-RAT Handover Tactic



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Parameter

Name

GsmShareCover

Description This parameter indicates the neighboring relationship of the currentcell and GSM neighboring cell, including Neighbor, Overlap,Covers, and Contained in.

Range andStep

0: Neighbor1: Overlap2: Covers3: Contained in

Default Value 0: Neighbor

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->Utran Cell->Utran Cell XXX->GSMNeighbouring Cell-> GSM Neighbouring Cell XXX ->Share CoverIndication

GERAN Cell Indicator


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Parameter

Name

GeranCellInd

Description This parameter indicates whether the cell is a GERAn cell.

Range andStep

0: Not GERAN Cell1: GERAN Cell

Default Value N/A

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management->External GSM Cell->GSM Cell XXX->GERAN Cell Indicator

PS Inter-System Handover Indicator


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Parameter

Name

PsInterSysHoSupp

Description This parameter indicates whether RNC supports PS inter-RAThandover. 0 indicates not support, 1 indicates support.

Range andStep

0: Not Support1: Support

Default Value 1: SupportConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> RNC Configuration SupplementInformation ->PS Inter-System Handover Indicator

Inter-System DTM Support Indicator


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Parameter

Name

DtmSuppInd

Description This parameter indicates whether RNC supports DTM mode, that iswhether supports inter-RAT handover both for CS domain servicesand PS domain services at the same time. 0 indicates not support,1 indicates support.

Range andStep

0 Not Support1 Support

Default Value 1 Support

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> RNC Configuration SupplementInformation ->Inter-System DTM Support Indicator

Handover to GSM Penalty Timer


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Parameter

Name

HoToGsmPenTimer

Description When handover from UMTS to GSM is failed, the timer initiates,and RNC will not handle inter-RAT measurement report until thetimer is expiry.

Range andStep

[0,65535]s step 1s

Default Value 20s

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter-> RNCRadio Resource Management->Handover to GSM Penalty Timer

Timer for Stopping Inter-frequency Measurementand Activating Inter-RAT Measurement


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and Activating Inter RAT MeasurementParameter

Name

T4StpIfMeaActRat

Description This parameter indicates the time interval of issuing inter-frequencymeasurement and inter-RAT measurement. When RNC issuesinter-frequency measurement, the timer is start. If the quality ofnon-used frequency is bad during the time length indicated by thisparameter, RNC will issue inter-RAT measurement if there is an

inter-RAT neighboring cell. The larger the value is, the slower theinter-RAT measurement is initialized, and vice versa.

Range andStep

(020)s

Default Value 5

ConfigurationPath

View->Configuration Management->RNC NE->RNC RadioResource Management-> Modify Advanced Parameter->RNCRadio Resource Management->Timer for Stopping Inter-frequencyMeasurement and Activating Inter-RAT Measurement


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Documents

8 UMTS Radio Parameter-127