Zte umts-handover-description
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Transcript of Zte umts-handover-description
ZTE UMTS Handover Description
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Contents
Intra-Frequency Handover Strategy
Inter-Frequency Handover Strategy
Inter-RAT Handover Strategy
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Contents
Intra-Frequency Handover Strategy
Inter-Frequency Handover Strategy
Inter-RAT Handover Strategy .
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Intra-Frequency Handover Sample
Time
Ec/No
P CPICH 1
P CPICH 2
ReportingEvent 1D
ReportingEvent 1B
ReportingEvent 1A
TrigTime1A TrigTime1D
RptRange 1AHysteresis 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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Intra-Frequency Handover Strategy
Intra-frequency handover refers to the handover performed between cells under
the same frequency point of UTRAN. The intra-frequency handover can be
triggered based on Ec/N0 or RSCP measurement through the parameter
IntraMeasQuan.Intra-frequency handover is measurement-based handover.
Intra-frequency measurement contains active set measurement, monitored set
measurement and detected set measurement.
The active set refers to the collection of cells retaining radio connection with UE.
The monitored set refers to the collection of cells retaining no radio connection
with UE but requiring measurement by sending the intra-frequency measurement
control message to UE.
The detected set refers to the collection of intra-frequency cells except cells in
the active set and monitored set.
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Intra-Frequency Handover Strategy
ZTE uses Event 1A、Event1B、Event1C、Event1D for intra-frequency handover.
Event 1A: The quality of target cell ameliorates and enters a reporting range of
relative active set quality. It can be used for adding cell to the active set.
Event 1B: The quality of target cell worsens and leaves a reporting range of
relative active set quality. It can be used for dropping cell from the active set.
Event 1C: The quality of a cell in non-active set is better than that of a cell in
certain active set. It can be used for swapping into and out of the active set.
Event 1D: The best cell changes. It can be used for adding cell to the active set,
swapping into and out of the active set, intra-frequency hard handover or inter-
frequency load balance.
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Intra-Frequency Handover Strategy:1A
/2)H(RLogM10W)(1MLog10WCIOLogM10 1a1aBest
N
1iiNewNew
A
R1a: Refers to the reporting range of Event 1A. It is used to control the extent of difficulty in
adding a cell into the active set (RptRange).
H1a: Refers to the reporting hysteresis of Event 1A. It is used to control the extent of difficulty
in adding a cell into the active set (Hysteresis(Intra)).
MNew: Refers to measurement of the to-be-evaluated cell outside the active set.
CIONew: Refers to offset of cell outside active set in relation to other cells (CellIndivOffset
(utranRelation)).
Mi: Refers to the mean measurement value of other cells except the best cell in active set.
NA: Refers to the number of other cells except the best cell in active set.
MBest: Refers to the measurement of the best cell in the active set.
W: Refers to the weight proportion (W) of the best cell to the rest cells in the active cell in
evaluation standards.
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Intra-Frequency Handover Strategy:1A
As can be calculated from the above formula, you can increase the probability of
triggering Event 1A by either increasing R1a (Event 1A meets the reporting range
conditions) or decreasing H1a (Decision hysteresis range); otherwise, you can
reduce the probability of triggering Event 1A.
Event 1A supports period-based report, that is, once Event 1A meets the
reporting range of quality standards, the UE will report Event 1A periodically
(EvtRptInterval) until this event does not meet reporting conditions or the
reporting times reach the maximum allowed times (EvtRptAmount).
There is restriction over the size of active set, so Event 1A will not be reported
once the number of cells in the active set reaches certain threshold
(RptDeactThr).
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Intra-Frequency Handover Strategy:1B
R1b: Refers to the reporting range of Event 1B. It is used to control the extent of difficulty in
dropping a cell from the active set (RptRange).
H1b: Refers to the reporting hysteresis of Event 1B. It is used to control the extent of difficulty in
dropping a cell from the active set (Hysteresis(Intra)).
MOld: Refers to measurement of the to-be-evaluated cell in the active set.
CIOOld: Refers to offset of cell in active set in relation to other cells (CellIndivOffset (utranCell)).
Mi: Refers to the mean measurement value of other cells except the best cell in active set.
NA: Refers to the number of other cells except the best cell in active set.
MBest: Refers to the measurement of the best cell in the active set.
W: Refers to the weight proportion (W) of the best cell to the rest cells in the active cell in
evaluation standards.
As can be calculated from the above formula, you can decrease the probability of triggering
Event 1B by either increasing R1b (Event 1B meets the reporting range conditions) or
decreasing H1b (Decision hysteresis range); otherwise, you can increase the probability of
triggering Event 1B.
/2)H(RLogM10W)(1MLog10WCIOLogM10 1b1bBest
N
1iiOldOld
A
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Intra-Frequency Handover Strategy:1C
H1c: Refers to the reporting hysteresis of Event 1C. It is used to control the extent of difficulty in
replacing a cell in the active set (Hysteresis(Intra)).
MNew: Refers to measurement of the to-be-evaluated cell outside the active set.
MInAS: Refers to the cell with poorest quality in the active set.
CIONew: Refers to offset of cell with poorest quality in active set in relation to other cells
(CellIndivOffset (utranCell)).
CIOInAS: Refers to offset of the to-be-evaluated cell outside the active set in relation to other cells
(CellIndivOffset (utranRelation)).
As can be calculated from the above formula, you can decrease the probability of triggering Event
1C by increasing H1c (decision hysteresis range); otherwise, you can increase the probability of
triggering Event 1C.
Event 1C supports period-based report, that is, once Event 1C meets the reporting range of quality
standards, the UE will report Event 1C periodically (EvtRptInterval) until this event does not meet
reporting conditions or the reporting times reach the maximum allowed times (EvtRptAmount).
To ensure the gain of macro diversity, the report of Event 1C is only allowed when the number of
cells in the active set reaches certain threshold (RplcActThr).
/2HCIOLogM10CIOLogM10 1cInASInASNewNew
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Intra-Frequency Handover Strategy:1D
MNotBest: Refers to the measurement of the to-be-evaluated cell within or outside the
active set.
CIONotBest: Refers to the offset of the to-be-evaluated cell within the active set
(CellIndivOffset (utranCell)) or outside the active set (CellIndivOffset (utranRelation)) in
relation to other cells.
CIOBest: Refers to offset of the to-be-evaluated cell in the active set in relation to other
cells (CellIndivOffset (utranCell)).
MBest: Refers to the measurement of the to-be-evaluated cell in the active set.
H1d: Refers to Event 1D report hysteresis (Hysteresis(Intra)).
As can be calculated from the above formula, you can decrease the probability of
triggering Event 1D by increasing H1d (decision hysteresis range); otherwise, you can
increase the probability of triggering Event 1D.
/2HCIOLogM10CIOLogM10 1dBestBestNotBestNotBest
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Intra-Frequency Handover Strategy:1D
Event 1D indicates the quality of certain cell within or outside current active set is
better than the best cell in current active set, that is, the best cell changes in the active
set. The following can be triggered upon the receipt of Event 1D:
Add a cell into the active set (the cell outside the active set reports Event 1D and
the number of links in the active set does not reach the maximum).
Swap a cell into or out of the active set (the cell outside the active set reports
Event 1D but the number of links in the active set reaches the maximum).
The serving cell changes (for HS-DSCH/E-DCH).
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Intra-Frequency Handover Strategy:Handling of Over 32 Adjacent Cells
When there are many cells in an active set, the number of intra-frequency adjacent
cells in the active set may exceed 32, the maximum number of adjacent cells as
restricted in the protocol. In that case, some intra-frequency adjacent cells must be
dropped to ensure there are only 32 adjacent cells in the neighboring cell list. Having
minimal impact on users in the active set, these dropped cells are those with poorest
signal quality or remotest geographical location. Therefore, each intra-frequency
adjacent cell is configured with a priority level.
The background configuration parameter MeasPrio is used to define the priority of
adjacent cells and includes three values (0: High priority; 1: Medium priority; 2: Low
priority). The specific value of MeasPrio must be set by the network planning engineer
based on existing network situation (for example, adjacent cell quality and
geographical location of adjacent cell).
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Intra-Frequency Handover Strategy:Handling of Over 32 Adjacent Cells
The graph shows the cell priority configuration based on the geographical location of adjacent cells.
Take the configuration of cells adjacent to the innermost gray cell as an example: there are three
layers of adjacent cells surrounding the gray cell, and they are differentiated from one another with
yellow (0: Top priority), blue (1: Medium priority) and red (2: Low priority)
The principle for inter-freq neighboring cells and inter-rat neighboring cells are same.
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Intra-Frequency Handover: Detected set Handover
The detected set handover is controlled through the parameter DetSetHoSwch ,If the
detected set handover is enabled, then the RNC handles the cell in the detected set in
the same way as it does in the monitored set, that is, to make decision about handover.
If the detected set handover of the best cell is enabled and there are over 32 adjacent
cells, the detected set measurement will be initiated. Initiation strategy: Change “1A
Triggering condition 2” into “Detected set cells and monitored set cells”, and “Reporting
cell status” into “Report all active set cells + cells within monitored set and/or detected
set on used frequency”, that is, perform measurement report of active set, monitored
set and detected set concurrently by sharing the same set of handover measurement
parameters.
If the detected set handover of the best cell is disabled or there are less 32 adjacent
cells, then change “1A Triggering condition ” into “Monitored set cells” and “Reporting
cell status” into “Report cells within active set and/or monitored set cells on used
frequency”, that is, to only report the monitored set instead of detected set.
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Intra-Frequency Handover Parameter
Parameter nameMeasurement Priority of Neighboring Cell
Abbreviated nameMeasPrio
DescriptionThis parameter indicates the measurement priority of the neighboring
cell. The highest priority is 0, the lowest priority is 2.
Range and Step[0, 1, 2]
UnitN/A
Default Value (note)0
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Intra-Frequency Handover Parameter
Parameter nameDetected Set Handover Switch
Abbreviated nameDetSetHoSwch
DescriptionThis parameter is the detected set handover control switch.
Range and Step 0: Closed1: Open
Unit N/A
Default Value (note) 1: Open
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Intra-Frequency Handover Parameter
Parameter name Reporting Range Constant for Event 1A/1B(dB)
Abbreviated name RptRange [MAX_INTRA_MEAS_EVENT]
DescriptionThis parameter controls the triggering of event 1a/1b. 1a is easier but 1b isharder to trigger when this value increases; and vice verse.MAX_INTRA_MEAS_EVENT indicates the maximum number of intra-frequency measurement event, which is 7.
Range and Step [0, 14.5]dB step 0.5dB
Unit dB
Default Value (note)
Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: [3,5,0,0,0,0,0]Period Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: [6,8,0,0,0,0,0]
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Intra-Frequency Handover ParameterParameter name Weight for Event 1A/1B
Abbreviated nameW[MAX_INTRA_MEAS_EVENT]
DescriptionThis parameter is used for quality judgment of event 1a and 1b, which indicates theweight of the best cell in the quality judgment and is related to the measurementquantity and the event type.MAX_INTRA_MEAS_EVENT indicates the maximum number of intra-frequencymeasurement event, which is 7.
Range and Step [0.0, 2.0] step 0.1
Unit N/A
Default Value (note)
Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: [0. 0 0. 0 0. 0 0. 0 0. 0 0. 0 0. 0]Period Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: [0. 0 0. 0 0. 0 0. 0 0. 0 0. 0 0. 0]
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Intra-Frequency Handover ParameterParameter name Hysteresis(dB)
Abbreviated name Hysteresis[MAX_INTRA_MEAS_EVENT]
DescriptionThis parameter indicates the hysteresis used when judging whether to triggerthe event. This parameter makes it different between the status to trigger anevent and the status to leave the event, so as to avoid the trigger status changedue to very small change.The larger the value is, the larger the difference between the status to triggerthe event and the status to leave the event will be.This parameter is related to the measurement quantity and the event type.Different events are configured separately and can be configured with differenthysteresisMAX_INTRA_MEAS_EVENT indicates the maximum number of intra-frequencymeasurement event, which is 7
Range and Step [0, 7.5]dB step 0.5dB
Unit dB
Default Value (note)
Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: [0,0,4,4,2,2,4]Period Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: [4,4,6,6,4,4,6]
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Intra-Frequency Handover Parameter
Parameter name Filter Coefficient
Abbreviated name FilterCoeff
Description
This parameter indicates the filtering factor that UE performs the L3 filtering on
the measurement results of the intra-frequency measurement.
Range and Step [0, 7.5]dB step 0.5dB
Unit dB
Default Value (note) Period Report Parameters for CPICH Ec/No: 2
UE Event Report Parameters for CPICH Ec/No: 2
Period Report Parameters for CPICH RSCP: 3
UE Event Report Parameters for CPICH RSCP: 3
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Intra-Frequency Handover Parameter
Parameter name Time To Trigger(ms)
Abbreviated name TrigTime[MAX_INTRA_MEAS_EVENT]
DescriptionThis parameter indicates the time difference between having detected the eventgeneration and reporting the event. Only when the event generation is detectedand still meets all requirements of event triggering after Time to trigger, the eventcan be triggered and reported. The larger the value is, the stricter the judgment isfor the event to be triggered. The parameter should be set according to theactual requirements. Sometimes, if it is set too large, the quality of calls maydecrease.MAX_INTRA_MEAS_EVENT indicates the maximum number of intra-frequencymeasurement event, which is 7.
Range and Step (0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280, 2560,5000)ms
Unit N/A
Default Value (note) Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: [200,640,320,320,200,200,320]msPeriod Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: [200,200,200,200,200,200,200]ms
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Intra-Frequency Handover ParameterParameter name Amount of Reporting in Period Report Criteria
Abbreviated name PrdRptAmount
Description
This parameter indicates the times of the periodical reports to be reported. If the UEdetects that the times of event reports exceeds the value of Amount of reporting, UEstops reporting the measurement results.
Range and Step [1, 2, 4, 8, 16, 32, 64, Infinity]
Unit N/A
Default Value (note) Period Report Parameters for CPICH Ec/No: InfinityUE Event Report Parameters for CPICH Ec/No: -Period Report Parameters for CPICH RSCP: InfinityUE Event Report Parameters for CPICH RSCP: -
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Intra-Frequency Handover ParameterParameter name Reporting Interval in Period Report Criteria(ms)
Abbreviated name PrdRptInterval
DescriptionThis parameter indicates the interval of periodical reporting when such reporting istriggered periodically.
Range and Step [250, 500, 1000, 2000, 3000, 4000, 6000, 8000, 12000, 16000, 20000, 24000,28000, 32000, 64000]ms
Unit Ms
Default Value (note) Period Report Parameters for CPICH Ec/No: 1sUE Event Report Parameters for CPICH Ec/No: -Period Report Parameters for CPICH RSCP: 1sUE Event Report Parameters for CPICH RSCP: -
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Intra-Frequency Handover ParameterParameter name Cell Individual Offset (UtranCell)
Abbreviated name CellIndivOffset
Description
An offset is allocated for each cell being monitored. The offset can be positiveor negative. Before the UE judges whether an event occurs, adds the offset tothe measurement result. If the PCPICH uses a positive offset, the UE sendsthe measurement report just like PCPICH is x dB better than the actual case.Or, if the PCPICH uses a negative offset, the PCPICH report is limited. Whenthe cell individual offset is used, the corresponding cell is possibly (at leasttemporarily) the target cell of the handover or removed from the active set.
Range and StepOMCR:[ -10, 10 ] dB step 0.5 dBRNC:D = ( P+10 ) * 2, [ 0, 40 ]
Unit dB
Default Value (note) 0dB
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Intra-Frequency Handover ParameterParameter name Cell Individual Offset (UtranRelation)
Abbreviated name CellIndivOffset
Description
An offset is allocated for each cell being monitored. The offset can be positive ornegative. Before the UE judges whether an event occurs, adds the offset to themeasurement result. If the PCPICH uses a positive offset, the UE sends themeasurement report just like PCPICH is x dB better than the actual case. Or, ifthe PCPICH uses a negative offset, the PCPICH report is limited. When the cellindividual offset is used, the corresponding cell is possibly (at least temporarily)the target cell of the handover or removed from the active set.
Range and StepOMCR: [-10, 10]dB; Step 0.5RNC: D=(P+10)*2, [0, 40]
Unit dB
Default Value (note) 0 dB
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Intra-Frequency Handover Parameter
Parameter name Reporting Deactivation Threshold for Event 1A
Abbreviated name RptDeactThr[MAX_INTRA_MEAS_EVENT]
Description
This parameter indicates the maximum number of the cells that can exist in theactive set in order for event 1a to occur,. 0 means not applicable
Range and Step (0, 1, 2, 3, 4, 5, 6, 7)
Unit N/A
Default Value (note) Only configured for event 1A.Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: [2, -, -, -, -, -, -]Period Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: [2, -, -, -, -, -, -]
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Intra-Frequency Handover ParameterParameter name Replacement Activation Threshold for Event 1C and 1J
Abbreviated name RplcActThr[MAX_INTRA_MEAS_EVENT]
Description
This parameter indicates the minimum number of the cell that can exist in theDCH active set when triggering event 1c or in the E-DCH active set whentriggering event 1j. When UE detects that one cell satisfies the trigger thresholdof event 1c/1j, it first judges whether the number of the cells in the currentactive set is smaller than the value indicated by this parameter. If so, do nottrigger event 1c/1j. If the value is 0, the parameter is invalid.MAX_INTRA_MEAS_EVENT indicates the maximum number of intra-frequency measurement event, which is 7.
Range and Step (0, 1, 2, 3, 4, 5, 6, 7)
Unit N/A
Default Value (note)
Only configured for event 1c and 1j.Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: [-, -, 3, -, -, -, 3]Period Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: [-, -, 3, -, -, -, 3]
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Intra-Frequency Handover Parameter
Parameter name
UTRAN Measurement Quantity for Intra-frequency Measurements
Abbreviated nameIntraMeasQuan
DescriptionThis parameter indicates UTRAN measurement quantity for intra-frequencymeasurements.
Range and Step 0: Ec/No1: RSCP2: Ec/No and RSCP
Unit N/A
Default Value (note) 0: Ec/No
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Intra-Frequency Handover Parameter
Parameter nameCPICH Ec/No Reporting Indicator
Abbreviated nameEcN0RptInd
DescriptionThis parameter indicates whether UE should report the measurement resultbased on the measurement quantity CPICH Ec/No.
Range and Step0: False (No Report)1: True (Report)
Unit N/A
Default Value (note) Period Report Parameters for CPICH Ec/No: TrueUE Event Report Parameters for CPICH Ec/No: TruePeriod Report Parameters for CPICH RSCP: TrueUE Event Report Parameters for CPICH RSCP: True
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Intra-Frequency Handover ParameterParameter name
CPICH RSCP Reporting Indicator
Abbreviated nameRscpRptInd
DescriptionThis parameter indicates whether UE should report the measurement resultbased on the measurement quantity CPICH RSCP.
Range and Step0: False (No Report)1: True (Report)
Unit N/A
Default Value (note) Period Report Parameters for CPICH Ec/No: TrueUE Event Report Parameters for CPICH Ec/No: TruePeriod Report Parameters for CPICH RSCP: TrueUE Event Report Parameters for CPICH RSCP: True
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Intra-Frequency Handover ParameterParameter name
Pathloss reporting indicator
Abbreviated namePathlossRptInd
DescriptionThis parameter indicates whether UE should report the measurement result basedon the measurement quantity pathloss.
Range and Step0..65535
Unit N/A
Default Value (note) Period Report Parameters for CPICH Ec/No: FalseUE Event Report Parameters for CPICH Ec/No: FalsePeriod Report Parameters for CPICH RSCP: FalseUE Event Report Parameters for CPICH RSCP: False
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Intra-Frequency Handover Parameter
Parameter name Event Number of Intra-frequency Measurement
Abbreviated name MeasEvtNum
Description
This parameter indicates how many events are required to be configured for theset of the intra-frequency measurement parameters for a certain purpose. Thenumber of the events is related to the purpose of the measurement and thejudgment method of the soft handover. The measurement parameter of the softhandover is related to the number of the events in the soft handover algorithm.
Range and Step [1,MAX_INTRA_MEAS_EVENT]in which,MAX_INTRA_MEAS_EVENT =7.
Unit N/A
Default Value (note) Period Report Parameters for CPICH Ec/No: -UE Event Report Parameters for CPICH Ec/No: 7Period Report Parameters for CPICH RSCP: -UE Event Report Parameters for CPICH RSCP: 7
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Intra-Frequency Handover Parameter
Parameter nameMaximum Number of Cells Within DCH Active Set
Abbreviated nameMaxNumOfAct
Description
This parameter indicates the maximum number of cells within DCHactive set.
Range and Step [1, 6]
Unit N/A
Default Value (note) 3
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Intra-Frequency Handover Parameter
Parameter nameSoft Handover Method
Abbreviated nameSoftHoMth
DescriptionThe parameter indicates the soft handover method is
periodical method or event method.
Range and Step 0: Periodical method1: Event method
Unit N/A
Default Value (note) 1: Event method
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Intra-Frequency Handover Parameter:High speed scenario
Default configuration High speed (fast fade) scenario
Reporting Range Constant for Event 1A 3dB 4dB
Hysteresis for Event 1A 0dB 0dB
Time to Trigger for Event 1A 200ms 100ms
Reporting Deactivation Threshold for Event 1A 2 2
Amount of Reporting for Event 1A 4 4
Reporting Range Constant for Event 1B 5dB 7dB
Hysteresis for Event 1B 0dB 0dB
Time to Trigger for Event 1B 640ms 1280ms
Hysteresis for Event 1C 4dB 2dB
Time to Trigger for Event 1C 320ms 320ms
Hysteresis for Event 1D 4dB 4dB
Time to Trigger for Event 1D 320ms 320ms
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Contents
Intra-Frequency Handover Strategy
Inter-Frequency Handover Strategy
Inter-RAT Handover Strategy
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Inter-Frequency Handover Sample
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Inter-Frequency Handover Strategy
The inter-frequency handover is a feature in which the UE hands over from one frequency
point of UTRAN to another one. It can either be handover based on inter-frequency
measurement, or blind handover based on shared coverage or inclusion.
The prerequisite for measurement-based inter-frequency handover is that UE performs
quality measurement of non-current serving carrier. For inter-frequency measurement in
CELL_DCH state, UE needs to initiate compressed mode unless it has double-receiver. The
compressed mode has a impact on both the resource consumption (for example, downlink
power and uplink interference) and UE (for example, the transmit power and battery
consumption), so inter-frequency measurement is only initiated when the radio quality of
current serving carrier is poor .
Upon receiving the inter-frequency measurement results from UE, the RNC makes a decision
about inter-frequency handover, and hands over UE to the target frequency point and cell
carried in the measurement results.
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Inter-Frequency Handover Strategy: Inter-Frequency Measurement
Qfrequency j: Refers to (Virtual) active set quality of carrier j, that is, the
measurement result of carrier j (dB for Ec/No; dBm for RSCP).
Mfrequency j: Refers to the physical measurement value (ratio for Ec/No; mW for
RSCP) of the (Virtual) active set of carrier j.
Mi j: Refers to the physical measurement value of cell i of carrier j.
NA j: Refers to the number of cells (excluding best cell) in the (Virtual) active set
of carrier j.
MBest j: Refers to the measurement result of the best cell in the (Virtual) active set
of carrier j.
Wj: Refers to the weight (WnoUsed or Wused) of the best cell in the (Virtual)
active set of carrier j during carrier measurement.
jBestj
N
1ijijjfrequencyfrequencyj LogM10)W(1MLog10WLogM10Q
jA
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Inter-Frequency Handover Strategy
ZTE UMTS support event 2A、2B、2C、2D、2F for inter-frequency
handover.
Among all inter-frequency measurement events, Event 2D and Event 2F only
involve measurement of working carrier frequencies, so the compressed
mode is not required during measurement and extra overhead will not be
brought about to both UE and RNC. The compressed mode and event 2A、
2B or 2C can be enabled and disabled based on the trigger of 2D and 2F.
Event 2A、2B、2C are used to trigger inter-frequency handover. The three
events are controlled by parameter InterHoTactic and will not be worked at
the same time.
All non-working carrier frequencies report Event 2E, indicating that radio
quality of all inter-frequency neighbor cells is poor and UE is at the edge of
3G coverage, then RNC may open inter-RAT measurement.
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Inter-Frequency Handover Strategy:2A
Evnet 2A: The best carrier frequency changes
QNotBest: Refers to the measurement result of current non-best carrier
frequency.
QBest : Refers to the measurement result of current best carrier frequency.
H2a : Refers to handover decision hysteresis parameter (Hysteresis(Inter))
of Event 2A.
/2HQQ 2aBestNotBest
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Inter-Frequency Handover Strategy:2B
Evnet 2B: The quality of working carrier frequency is lower than a threshold
and that of non-working carrier frequency is higher than a threshold
QNon used: Refers to the measurement result of current non-working carrier
frequency.
TNon used 2b: Refers to the absolute threshold (ThreshNoUsedFreq) of good
quality of non-working carrier frequency in Event 2B decision.
H2b : Refers to handover decision hysteresis parameter (Hysteresis(Inter)) of
Event 2B.
QUsed: Refers to the measurement result of current working carrier frequency.
TUsed 2b: Refers to the absolute threshold (ThreshUsedFreq) of poor quality of
working carrier frequency in Event 2B decision.
/2HTQ 2b2busedNonusedNon /2HTQ 2b2bUsedUsed and
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Inter-Frequency Handover Strategy:2C
QNon used: Refers to the measurement result of current non-working carrier
frequency.
TNon used 2c : Refers to the absolute threshold (ThreshNoUsedFreq) of good
quality of non-working carrier frequency in Event 2C decision.
H2c: Refers to handover decision hysteresis parameter (Hysteresis(Inter)) of
Event 2C.
/2HTQ 2c2cusedNonusedNon
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Inter-Frequency Handover Strategy:2D
Event 2D: The quality of working carrier frequency is lower than a threshold.
QUsed: Refers to the measurement result of current working carrier
frequency.
TUsed 2d: Refers to the absolute threshold (ThreshUsedFreq) of poor quality
of working carrier frequency in Event 2D decision.
H2d: Refers to handover decision hysteresis parameter (Hysteresis(Inter)) of
Event 2D.
/2HTQ 2d2dUsedUsed
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Inter-Frequency Handover Strategy:2E
Event 2E: The quality of non-working carrier frequency is lower than a
threshold.
QNon used: Refers to the measurement result of current non-working carrier
frequency.
TNon used 2e: Refers to the absolute threshold (ThreshNoUsedFreq) of good
quality of non-working carrier frequency in Event 2E decision.
H2e: Refers to handover decision hysteresis parameter (Hysteresis) of
Event 2E.
/2HTQ 2e2eusedNonusedNon
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Inter-Frequency Handover Strategy:2F
Event 2F: The quality of working carrier frequency is higher than a
threshold.
QUsed: Refers to the measurement result of current working carrier
frequency.
TUsed 2f: Refers to the absolute threshold (ThreshUsedFreq) of poor quality
of working carrier frequency in Event 2F decision.
H2f: Refers to handover decision hysteresis parameter (Hysteresis(Inter)) of
Event 2F
/2HTQ 2f2fUsedUsed
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Inter-Frequency Handover Parameter
Parameter nameMeasurement Priority of Neighboring Cell
Abbreviated nameMeasPrio
Description
This parameter indicates the measurement priority of theneighboring cell. The highest priority is 0, the lowest priority is 2.
Range and Step[0, 1, 2]
UnitN/A
Default Value (note)0
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Inter-Frequency Handover Parameter
Parameter name Inter-frequence Handover Tactic
Abbreviated name InterHoTactic
DescriptionThis parameter indicates the inter-frequency handover tactic.
Range and Step
0: Algorithm Deciding1: 2A Event Trigger2: 2B Event Trigger3: 2C Event Trigger
UnitN/A
Default Value (note)1: 2A Event Trigger
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Inter-Frequency Handover Parameter
Parameter name Filter Coefficient
Abbreviated name FilterCoeff
DescriptionThis parameter indicates the filtering factor that UE performs theL3 filtering on the measurement results of the inter-frequencymeasurement.
Range and Step (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19)
Unit N/A
Default Value (note)
UE Inter-frequency Event Report Parameters for CPICH Ec/No:3UE Inter-frequency Event Report Parameters for CPICH RSCP:3
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Inter-Frequency Handover Parameter
Parameter name Absolute Threshold of the Quality of the Currently UsedFrequency for 2B/2D/2F
Abbreviated name ThreshUsedFreq[MAX_INTER_MEAS_EVENT]
Description This parameter indicates the absolute threshold that is required tobe configured for event 2b/2d/2f (used when judging the quality ofthe currently used frequency.MAX_INTEREAS_EVENT is the maximum number of inter-frequecy measument event which is 6.
Range and Step CPICH RSCP: [-115, -25] dBmCPICH Ec/No: [-24, 0] dBPathloss: [30, 165] dB
Unit dBm /dB
Default Value (note)
For CPICH Ec/No, UE inter frequency event report parameter: [-24,-13, -24,-13,-24,-5]dBFor CPICH RSCP, UE inter frequency event report parameter: [-115,-95, -115,-95,-115,-70]dB
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Inter-Frequency Handover Parameter
Parameter name Weight of the Currently Used Frequency for 2A/2B/2D/2F
Abbreviated name Wused[MAX_INTER_MEAS_EVENT]
DescriptionThis parameter is used for quality judgment for the carrier of currentlyused frequency, which indicates the weight of the best cell in thequality judgment and is related to the measurement quantity and theevent type (only for event 2a/2b/2d/2f).MAX_INTEREAS_EVENT is the maximum number of inter-frequecymeasument event which is 6.
Range and Step [0.0, 2.0]step 0.1
Unit N/A
Default Value (note)
For CPICH Ec/No, UE inter frequency event report parameter: [0. 0,0. 0, 0. 0,0. 0,0. 0,0. 0]For CPICH RSCP, UE inter frequency event report parameter: [0. 0,0. 0, 0. 0,0. 0,0. 0,0. 0]
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Inter-Frequency Handover Parameter
Parameter name Hysteresis(dB)
Abbreviated name Hysteresis[MAX_INTER_MEAS_EVENT]
Description This parameter indicates the hysteresis used when judgingwhether to trigger the event. This parameter makes it differentbetween the status to trigger an event and the status to leave theevent, so as to avoid the trigger status change due to very smallchange. Different events are configured separately and can beconfigured with different values.MAX_INTEREAS_EVENT is the maximum number of inter-frequecy measument event which is 6.
Range and Step (0, …,14.5)dB step 0.5dB
Unit dB
Default Value (note)
For CPICH Ec/No, UE inter frequency event report parameter:[4,4,4,4,4,4]dBFor CPICH RSCP, UE inter frequency event report parameter:[4,4,4,4,4,4]dB
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Inter-Frequency Handover Parameter
Parameter name Time To Trigger(ms)
Abbreviated name TrigTime[MAX_INTER_MEAS_EVENT]
Description This parameter indicates the time difference between havingdetected the event generation and reporting the event. Only whenthe event generation is detected and still meets all requirements ofevent triggering after Time to trigger, the event can be triggered andreported. The larger the value is, the stricter the judgment is for theevent to be triggered. The parameter should be set according to theactual requirements. Sometimes, if it is set too large, the quality ofcalls may decrease.MAX_INTEREAS_EVENT is the maximum number of inter-frequecymeasument event which is 6.
Range and Step (0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640,1280, 2560, 5000)ms
Unit Ms
Default Value (note)For CPICH Ec/No, UE inter frequency event report parameter:[100,100,100,640,100,640]For CPICH RSCP, UE inter frequency event report parameter:[100,100,100,640,100,640]
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Inter-Frequency Handover Parameter
Parameter name Absolute Threshold of the Quality of the Non-used Frequency for2B/2C/2E
Abbreviated name ThreshNoUsedFreq[MAX_INTER_MEAS_EVENT]
DescriptionThis parameter indicates the absolute threshold that is required tobe configured for event 2a/2b/2c/2e (used when judging the qualityof the noT used frequency). MAX_INTEREAS_EVENT is themaximum number of inter-frequecy measument event which is 6.
Range and Step CPICH RSCP: [-115, 25]dBm step 1dBmCPICH Ec/No: [-24, 0]dB step 1dB
Unit dBm /dB
Default Value (note)
For CPICH Ec/No, UE inter frequency event report parameter: [-24,-5,-5,-24,-13,-24]dBFor CPICH RSCP, UE inter frequency event report parameter: [-115,-50,-50,-115,-95,-115]dBm
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Inter-Frequency Handover Parameter
Parameter name Weight of the Non-used Frequency for 2A/2B/2C/2E
Abbreviated name WNoUsed[MAX_INTER_MEAS_EVENT]
DescriptionThis parameter is used when judging the quality of the cells of notused frequencies. This parameter indicates the weight of the bestcell in the quality judgment (only for event 2a/2b/2c/2e).MAX_INTEREAS_EVENT is the maximum number of inter-frequecy measument event which is 6.
Range and Step [0.0, 2.0] step 0.1
Unit N/A
Default Value (note)
For CPICH Ec/No, UE inter frequency event report parameter: [0. 0,0. 0, 0. 0,0. 0,0. 0,0. 0]For CPICH RSCP, UE inter frequency event report parameter: [0.0, 0. 0, 0. 0,0. 0,0. 0,0. 0]
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Inter-Frequency Handover Parameter
Parameter name Share Cover Indication
Abbreviated name ShareCover
DescriptionThis parameter describes the neighboring relationship of theserving cell and neighboring cell.
Range and Step 0: Neighbor1: Overlap2: Covers3: Contained in
Unit N/A
Default Value (note)0: Neighbor
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Inter-Frequency Handover Parameter
Parameter nameInter-frequency Handover Method
Abbreviated nameInterHoMth
DescriptionThis paramerer indicates the inter handover method is periodicalmethod or event method.
Range and Step 0: Periodical method1: Event method
Unit N/A
Default Value (note) 1: Event method
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Inter-Frequency Handover Parameter
Parameter nameUTRAN Measurement Quantity for Inter-frequency and Inter-RATmeasurements
Abbreviated nameNonIntraMeasQuan
DescriptionThis parameter indicates UTRAN measurement quantity for inter-frequency and inter-RAT measurements.
Range and Step 0: Ec/No1: RSCP2: Ec/No and RSCP
Unit N/A
Default Value (note) 1: RSCP
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Contents
Intra-Frequency Handover Strategy
Inter-Frequency Handover Strategy
Inter-RAT Handover Strategy
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Inter-RAT Handover Sample
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Inter-RAT Handover Strategy
Inter-RAT handover means that an UE switches from one radio access system to
another, and specifically, from a UTRAN access system to a GERAN system. (If
an UE switches from a GERAN system to a UTRAN system, the GERAN system
policy is used.) Inter-RAT handover can be measurement-based handover
between systems or blind handover based on shared coverage or inclusion.
The prerequisite of measured-based Inter-RAT handover is that the UE
measures the quality of the Inter-RAT neighboring cells. In WCDMA system, for
Inter-RAT measurement in CELL_DCH state, the UE must enable compressed
mode for Inter-RAT measurement unless it has dual receivers. In addition,
regarding the influences of the compressed mode on the system and UE, Inter-
RAT measurement is enabled only when the current UTRAN system has poor
radio quality . When receiving Inter-RAT measurement result reported by the UE,
the RNC makes Inter-RAT handover decision and switches the UE to the target
cell of the GERAN system specified in the measurement result.
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Inter-RAT Handover Strategy:Inter-RAT Measurement
QUTRAN :indicates the measurement result of the currently used UTRANfrequency (dB for Ec/No; dBm for RSCP).
MUTRAN : indicates the measured physical value of the currently used UTRANfrequency (ratio for Ec/No; mV for RSCP).
Mi : indicates the measured physical value of cell I in the current active set. NA : indicates the number of the cells (excluding best cells) in an active set. MBest : indicates the measurement result of the best cells in an active set. W : indicates the weight of the best cells in an active set in the frequency quality
evaluation of the currently used UTRAN.
Best
N
1iiUTRANUTRAN LogM10W)(1MLog10WLogM10Q
A
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Inter-RAT Handover Strategy:Inter-RAT Measurement
Inter-RAT measurement is to measure the Inter-RAT cells. In the case of Inter-RAT
measurement, the measured quantity of the UTRAN network can be triggered based on the
measured quantity of Ec/N0 or RSCP. The specific parameter used is controlled by the
NonIntraMeasQuan parameter. The measured quantity of Inter-RAT measurement depends
on the systems to be measured. For the GERAN, the measured quantity is RSSI. At present,
Inter-RAT measurement supports only the handover modes reported through events.
ZTE UMTS support event 3A、3C for inter-RAT handover and uses 2D and 2F events as the
criterions for evaluating the signal quality of the current frequency, If the UE reports a 2D
event, that is, the current carrier is in poor signal quality, and no inter-frequency neighboring
cells exist, or the UE reports a 2E event after inter-frequency measurement is started (that is,
the signal quality of the measured inter-frequency neighboring cell is also poor), the RNC
tries to initiate Inter-RAT blind handover or start Inter-RAT measurement 3A or 3C event to
the UE based on the GSM neighboring cell cover.
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Inter-RAT Handover Strategy:3A
3A: The currently used UTRAN carrier quality is lower than a threshold, and thequality of other radio systems is higher than a threshold. It is used for decision ofInter-RAT handover.
QUsed :indicates the estimated quality of the used frequency of the UTRAN. TUsed :indicates the absolute threshold (Thresh[MAX_RAT_MEAS_EVENT]) of
the currently used frequency difference. H3a: is the hysteresis parameter (Hysteresis[MAX_RAT_MEAS_EVENT] (Rat))
for 3A event decision. MOther RAT :is the quality measurement result of other systems. CIOOther RAT: is the quality offset of other system cells
(CellIndivOffset(gsmRelation). TOther RAT: is the absolute threshold of other systems
(ThreshSys[MAX_RAT_MEAS_EVENT])
/2HTQ 3aUsedUsed /2HTCIOM 3aRATOtherRATOtherRATOther and
:
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Inter-RAT Handover Strategy:3C
3C: The quality of other radio systems is higher than a threshold. It can be usedfor Inter-RAT handover decision.
MOther RAT : the quality measurement result of other systems. CIOOther RAT : the quality offset of other system cells (CellIndivOffset(gsmRelation). TOther RAT : the absolute threshold of other systems
(ThreshSys[MAX_RAT_MEAS_EVENT]). H3c : the hysteresis parameter (Hysteresis[MAX_RAT_MEAS_EVENT] (Rat)) for
3C event decision.
:
/2HTCIOM 3cRATOtherRATOtherRATOther
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Inter-RAT Handover Parameter
Parameter nameMeasurement Priority of Neighboring GSM Cell
Abbreviated nameMeasPrio
Description
This parameter indicates the measurement priority of theneighboring cell. The highest priority is 0, the lowest priority is2.
Range and Step [0, 2]
Unit N/A
Default Value (note) 0
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Inter-RAT Handover Parameter
Parameter name Inter-Rat Handover Tactic
Abbreviated name RatHoTactic
DescriptionThis parameter indicates the inter-RAT handover tactic.
Range and Step
0: Algorithm Deciding1: 3A Event Trigger2: 3C Event Trigger
UnitN/A
Default Value (note)1: 3A Event Trigger
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Inter-RAT Handover Parameter
Parameter name Absolute Threshold of the Quality of UTRAN Cell for 3A
Abbreviated name Thresh[MAX_RAT_MEAS_EVENT]
DescriptionThis parameter indicates the absolute threshold of the UTRAN cellquality that UE uses to judge event 3a. The range and Unit of theparameter relate to the measurement quantity of UTRAN system.MAX_RAT_MEAS_EVENT is the maximum number of inter-RATmeasurement events which takes the value of 4.
Range and Step CPICH RSCP:[-115, -25] dBm step 1dBmCPICH Ec/No: [-24, 0] dB step 1dB
Unit dBm/ dB
Default Value (note)For own system CPICH Ec/No, UE event report parameter: [-6, -24,-24,-24]For own system CPICH RSCP, UE event report parameter: [-95, -115,-115,-115]
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Inter-RAT Handover Parameter
Parameter name Weight of the UTRAN System for 3A
Abbreviated name W[MAX_RAT_MEAS_EVENT]
DescriptionThis parameter is used when judging the quality of the UTRANsystem in inter-RAT measurement, which indicates the weight of thebest cell in the quality judgment (only for event 3a).MAX_RAT_MEAS_EVENT is the maximum number of inter-RATmeasurement events which takes the value of 4.
Range and Step [0.0, 2.0] step 0.1
Unit N/A
Default Value (note)
For own system CPICH Ec/No, UE event report parameter: [0, -, -, -]For own system CPICH RSCP, UE event report parameter: [0, -, -, -]
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Inter-RAT Handover Parameter
Parameter name Absolute Threshold of the Quality of Other RAT for 3A/3B/3C
Abbreviated name ThreshSys[MAX_RAT_MEAS_EVENT]
DescriptionThis parameter indicates the absolute threshold used when judgingthe quality of other RAT configured for event 3a/3b/3c. The valuerange and Unit of this parameter are related to the measurementquantity of other system, at present the measurement quantity canonly be GSM Carrier RSSI of the GSM system, which correspondsto the CPICH RSCP of UTRAN system, so the value range and Unitof this parameter correspond to the CPICH RSCP.MAX_RAT_MEAS_EVENT is the maximum number of inter-RATmeasurement events which takes the value of 4.
Range and Step CPICH RSCP: [-115, -25]dBm step 1dBmCPICH Ec/No: [-24, 0] dB step 1dB
Unit dBm/ dB
Default Value (note)
[-90, -95, -95, -115]dBm
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Inter-RAT Handover Parameter
Parameter name Hystersis(dB)
Abbreviated name Hysteresis[MAX_RAT_MEAS_EVENT]
Description This parameter indicates the hysteresis used when judging whetherto trigger the event. This parameter makes it different between thestatus to trigger an event and the status to leave the event, so as toavoid the trigger status change due to very small change.The larger the value is, the larger the difference between the statusto trigger the event and the status to leave the event will be.This parameter is related to the measurement quantity and the eventtype.Different events are configured separately and can be configuredwith different hysteresisMAX_RAT_MEAS_EVENT is the maximum number of inter-RATmeasurement events which takes the value of 4.
Range and Step (0, …, 7.5)dB step 0.5dB
Unit dB
Default Value (note)For own system CPICH Ec/No, UE event report parameter:[4,4,2,4]dBFor own system CPICH RSCP, UE event report parameter:[4,4,4,4]dB
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Inter-RAT Handover Parameter
Parameter name Time To Trigger(ms)
Abbreviated name TrigTime[MAX_RAT_MEAS_EVENT]
Description This parameter indicates the time difference between having detectedthe event generation and reporting the event. Only when the eventgeneration is detected and still meets all requirements of eventtriggering after Time to trigger, the event can be triggered and reported.The larger the value is, the stricter the judgment is for the event to betriggered. The parameter should be set according to the actualrequirements. Sometimes, if it is set too large, the quality of calls maydecrease.MAX_RAT_MEAS_EVENT is the maximum number of inter-RATmeasurement events which takes the value of 4.
Range and Step (0, 10, 20, 40, 60, 80, 100, 120, 160, 200, 240, 320, 640, 1280,2560, 5000)ms
Unit Ms
Default Value (note)For own system CPICH Ec/No, UE event report parameter:[100,100,100,100]msFor own system CPICH RSCP, UE event report parameter:[100,100,100,100]ms
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0,102,255
74
Inter-RAT Handover Parameter
Parameter name UTRAN Filter Coefficient(Rat)
Abbreviated name FilterCoeff(Rat)
DescriptionThis parameter indicates the filtering factor of UTRAN when UEperforms the L3 filtering on the measurement results of the inter-RATmeasurement.
Range and Step (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19)
Unit N/A
Default Value (note)
UE Event Report Parameters for Own System CPICH Ec/No: 3UE Event Report Parameters for Own System CPICH RSCP: 3
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
75
Inter-RAT Handover Parameter
Parameter name GSM Filter Coefficient(Rat)
Abbreviated name GsmFilterCoeff
DescriptionThis parameter indicates the filtering factor of GSM when UE performsthe L3 filtering on the measurement results of the inter-RATmeasurement.
Range and Step (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19)
Unit N/A
Default Value (note)
For own system CPICH Ec/No, UE event report parameter: 3For own system CPICH RSCP, UE event report parameter: 3
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
76
Inter-RAT Handover Parameter
Parameter name GSM BSIC Verification Required Indicatior
Abbreviated name BSICVeriReq
Description This parameter indicates whether to confirm the BSIC of GSM cellswhen performing the Inter-RAT measurement. BSIC = NCC(Network Color Code) + BCC (Base Color Code). BSIC can beused to identify the GSM cells. If the value is ‘Not Required ‘,UE does not confirm the BSIC when measuring the GSM cells.If the value is ‘Required ‘, UE confirms the BSIC whenmeasuring the GSM cells, and then queue the confirmed BSICcells according to the measurement results. In eachmeasurement period, re-confirm and measure the BSIC in theorder of the measurement results, from good to bad.
Range and Step 0: Require Confirm1: Not Required Confirm
Unit N/A
Default Value (note)
UE Event Report Parameters for Own System CPICH Ec/No:Required
UE Event Report Parameters for Own System CPICH RSCP:Required
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
77
Inter-RAT Handover Parameter
Parameter name UTRAN Quality Estimation Reporting Indicator
Abbreviated name UtranEstQual
Description This parameter indicates whether the report of the estimation qualityof UTRAN system is requested or not.
Range and Step 0: Not Report (False)1: Report (True)
Unit N/A
Default Value (note)
For own system CPICH Ec/No, UE event report parameter: NotReportFor own system CPICH RSCP, UE event report parameter: NotReport
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
78
Inter-RAT Handover Parameter
Parameter name GSM Carrier RSSI Reporting Indicator
Abbreviated name GsmCarrRSSIInd
Description This parameter indicates whether the report of RSSI of the GSMcells is requested or not. Since the measurement quantity of theGSM cell is only GSM Carrier RSSI, in inter-RAT measurementEvent Reporting Criteria, there is no need to report this parameterwhen measuring the GSM cell and performing the Inter-RAThandover. In the periodical reporting criteria, GSM carrier RSSIreport is required.
Range and Step 0: Not Report (False)1: Report (True)
Unit N/A
Default Value (note)
For own system CPICH Ec/No, UE event report parameter: ReportFor own system CPICH RSCP, UE event report parameter: Report
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
79
Inter-RAT Handover Parameter
Parameter name Cell individual offset(gsmRelation)
Abbreviated name CellIndivOffset(gsmRelation)
DescriptionAn offset is allocated for each cell being monitored. The offset canbe positive or negative. Before the UE judges whether an eventoccurs, adds the offset to the measurement result. If the PCPICHuses a positive offset, the UE sends the measurement report justlike PCPICH is x dB better than the actual case. Or, if the PCPICHuses a negative offset, the PCPICH report is limited. When the cellindividual offset is used, the corresponding cell is possibly (at leasttemporarily) the target cell of the handover or removed from theactive set.
Range and Step OMCR: [-10, 10]dB step 0. 5RNC: D= (P+10) *2, [0, 40]
Unit dB
Default Value (note) 0dB
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
80
Inter-RAT Handover Parameter
Parameter nameUTRAN Measurement Quantity for Inter-frequency and Inter-RATMeasurements
Abbreviated nameNonIntraMeasQuan
DescriptionThis parameter indicates UTRAN measurement quantity for inter-frequency and inter-RAT measurements.
Range and Step 0: Ec/No1: RSCP2: Ec/No and RSCP
Unit N/A
Default Value (note) 1: RSCP
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
81
Inter-RAT Handover Parameter
Parameter nameShare Cover Indication
Abbreviated nameGsmShareCover
DescriptionThis parameter describes the neighboring relationship of theserving cell and Gsm neighboring cell.
Range and Step 0: Neighbor1: Overlap2: Covers3: Contained in
Unit N/A
Default Value (note) 0: Neighbor
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
82
Inter-RAT Handover Parameter: for True Tower
Defaultconfiguration True Tower
Absolute Threshold of the Quality ofthe Currently Used Frequency for 2D -95dbm -85dbm
Absolute Threshold of the Quality ofUTRAN Cell for 3A -95dbm -85dbm
The handover parameters in TRUE network are default configuration except the
follow adjustment.
In the hot spot area TRUE TOWER, to make sure that users has good
experience (data rate>=400kbps) in HSPA coverage, the HSPA coverage
should not be too large. ZTE suggests to handover to GSM at the edge of
HSPA coverage. Some parameters are recommend to be changed:
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
83
Intra-Frequency Handover Parameter Summary
Parameter Name Default Value TRUE Value
Measurement Priority of Neighboring Cell 0 0
Detected Set Handover Switch Open Open
Reporting Range Constant for Event 1A 3db 3db
Reporting Range Constant for Event 1B 5db 5db
Weight for Event 1A 0 0
Weight for Event 1B 0 0
Hysteresis 1A 0db 0db
Hysteresis 1B 0db 0db
Hysteresis 1C 4db 4db
Hysteresis 1D 4db 4db
Filter Coefficient 2db 2db
Time To Trigger 1A 200ms 200ms
Time To Trigger 1B 640ms 640ms
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
84
Intra-Frequency Handover Parameter Summary
Parameter Name Default Value TRUE ValueTime To Trigger 1C 320ms 320ms
Time To Trigger 1D 320ms 320ms
Amount of Reporting in Period Report Criteria Infinity Infinity
Reporting Interval in Period Report Criteria 1s 1s
Cell Individual Offset (UtranCell) 0db 0db
Cell Individual Offset (UtranRelation) 0db 0db
Reporting Deactivation Threshold for Event 1A 2 2
Replacement Activation Threshold for Event 1C 3 3
UTRAN Measurement Quantity for Intra-frequencyMeasurements Ec/No Ec/No
CPICH Ec/No Reporting Indicator TRUE TRUE
CPICH RSCP Reporting Indicator TRUE TRUE
Pathloss reporting indicator FALSE FALSE
Event Number of Intra-frequency Measurement 7 7
Maximum Number of Cells Within DCH Active Set 3 3
Soft Handover Method Event method Event method
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
85
Inter-Frequency Handover Parameter SummaryParameter Name Default Value TRUE ValueMeasurement Priority of Neighboring Cell 0 0
Inter-frequence Handover Tactic 2A Event Trigger 2A Event Trigger
Filter Coefficient 3 3
Absolute Threshold of the Quality of the Currently UsedFrequency for 2B -95db -95db
Absolute Threshold of the Quality of the Currently UsedFrequency for 2D -95db -95db (except -85 for True
Tower and CP tower)
Absolute Threshold of the Quality of the Currently UsedFrequency for 2F -70db -70db
Weight of the Currently Used Frequency for 2A 0 0
Weight of the Currently Used Frequency for 2B 0 0
Weight of the Currently Used Frequency for 2D 0 0
Weight of the Currently Used Frequency for 2F 0 0
Hysteresis 2A 4db 4db
Hysteresis 2B 4db 4db
Hysteresis 2C 4db 4db
Hysteresis 2D 4db 4db
Hysteresis 2E 4db 4db
Hysteresis 2F 4db 4db
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
86
Inter-Frequency Handover Parameter SummaryParameter Name Default Value TRUE Value
Time To Trigger 2A 100ms 100ms
Time To Trigger 2B 100ms 100ms
Time To Trigger 2C 100ms 100ms
Time To Trigger 2D 640ms 640ms
Time To Trigger 2E 100ms 100ms
Time To Trigger 2F 640ms 640ms
Absolute Threshold of the Quality of the Non-usedFrequency for 2B -50dbm -50dbm
Absolute Threshold of the Quality of the Non-usedFrequency for 2C -50dbm -50dbm
Absolute Threshold of the Quality of the Non-usedFrequency for 2E -95dbm -95dbm
Weight of the Non-used Frequency for 2A 0 0
Weight of the Non-used Frequency for 2B 0 0
Weight of the Non-used Frequency for 2C 0 0
Weight of the Non-used Frequency for 2E 0 0
Share Cover Indication Neighbor Neighbor
Inter-frequency Handover Method Event method Event method
UTRAN Measurement Quantity for Inter-frequency andInter-RAT measurements RSCP RSCP
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
87
Intra-RAT Handover Parameter Summary
Parameter Name Default Value TRUE Value
Measurement Priority of Neighboring GSM Cell 0 0
Inter-Rat Handover Tactic 3A Event Trigger 3A Event Trigger
Absolute Threshold of the Quality of UTRAN Cell for3A -95dbm
-95db (except -85 forTrue Tower and CPtower)
Weight of the UTRAN System for 3A 0 0
Absolute Threshold of the Quality of Other RAT for 3A -90dbm -90dbm
Absolute Threshold of the Quality of Other RAT for 3B -95dbm -95dbm
Absolute Threshold of the Quality of Other RAT for 3C -95dbm -95dbm
Hystersis 3A 4db 4db
Hystersis 3B 4db 4db
Hystersis 3C 4db 4db
222,219,222
255,154,0
49,162,206
123,195,24
206,162,74
206,207,206
0,102,255
88
Inter-RAT Handover Parameter Summary
Parameter Name Default Value TRUE Value
Time To Trigger 3A 100ms 100ms
Time To Trigger 3B 100ms 100ms
Time To Trigger 3C 100ms 100ms
UTRAN Filter Coefficient(Rat) 3 3
GSM Filter Coefficient(Rat) 3 3
GSM BSIC Verification Required Indicatior Required Required
UTRAN Quality Estimation Reporting Indicator Not Report Not Report
GSM Carrier RSSI Reporting Indicator Report Report
Cell individual offset(gsmRelation) 0db 0db
UTRAN Measurement Quantity for Inter-frequencyand Inter-RAT Measurements RSCP RSCP
Share Cover Indication Neighbor Neighbor