wcdma p&o a en handover control 201012
TRANSCRIPT
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Handover control feature
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Content
Intra-frequency handover
Inter-frequency handover
Inter-RAT handover
HSDPA handoverHSUPA handover
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Intra-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Softer Handover vs. Soft Handover
Softer Handover Soft Handover
macro diversity macro diversity
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Intra-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Measurement Control
When to set up intra-frequency Measurement? When to modify intra-frequency Measurement?
When to delete intra-frequency Measurement?
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Parameter Configuration in MC
Intra-frequency events: MeasEvtNum, MeaEvtId Measurement quantity: IntraMeasQuan (Ec/N0 or
RSCP)
Report mode: SoftHoMth (Periodical or event-based)
Which parameters are used in macro diversity?
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Intra-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Intra-frequency Events
Layer 3 filter:
Event 1A:
Event 1B:
Event 1C:
Event 1D:
nnn MaFaF 1)1(
/2)H(RLogM10W)(1MLog10WCIOLogM10 1a1aBest
N
1i
iNewNew
A
/2)H(RLogM10W)(1MLog10WCIOLogM10 1b1bBest
N
1i
iOldOld
A
/2HCIOLogM10CIOLogM10 1cInASInASNewNew
/2HCIOLogM10CIOLogM10 1dBestBestNotBestNotBest
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Time-To-Trigger
Reportingevent 1A
Measurementquantity
Time
TrigTime[MAX_INTRA_MEAS_EVENT]
P CPICH 1RptRange
[MAX_INTRA_MEAS_EVENT]
P CPICH 2
P CPICH 3
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The intra-frequency configuration index
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Configuration Parameter
Event Method
Ec/N0
Configuration
index related
traffic: 1
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Configuration Parameter
Measurement configuration
index: 2
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Configuration Parameter
Measurement
configuration
index: 2
Thresholds of
event e1a-e1j
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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
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Intra-Frequency Handover Parameter Summary
Parameter Name Default Value TRUE Value
Time To Trigger 1C 320ms 320msTime 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 2Replacement Activation Threshold for Event 1C 3 3
UTRAN Measurement Quantity for Intra-frequency
MeasurementsEc/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
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Intra-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Event Handling
Event 1A MaxNumOfAct, handover punishment timer, MR
contains several target cells?
Event 1B
MR contains several target cells?
Event 1C
MaxNumOfAct, handover punishment timer
Event 1D
e1d triggered by cell outside AS
e1d triggered by cell in AS
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Intra-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Intra-Frequency Handover Sample
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Content
Intra-frequency handover
Inter-frequency handover
Inter-RAT handover
HSDPA handoverHSUPA handover
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Inter-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Soft Handover vs. Hard Handover
Soft Handover Hard Handover
macro diversity
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Inter-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Measurement Control
When to set up inter-frequency Measurement? When to modify inter-frequency Measurement?
When to delete inter-frequency Measurement?
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Parameter Configuration in MC
Inter-frequency events: MeasEvtNum, MeaEvtId Measurement quantity: NonIntraMeasQuan (Ec/N0
or RSCP)
Report mode: InterHoMth (Periodical or event-based)
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Inter-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Inter-frequency Events
Layer 3 filter:
Event 2A (default configuration):
Event 2B/ &
2C
Event 2D (default configuration):
Event 2E/2F
Trigger Time
nnn
MaFaF 1)1(
jBestj
N
1i
jijjfrequencyjfrequency LogM10)W(1MLog10WLogM10QjA
/2HQQ 2aBestNotBest
/2HTQ 2d2dUsedUsed
/2HTQ 2b2busedNonusedNon /2HTQ 2b2bUsedUsed
/2HTQ 2c2cusedNonusedNon
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The inter-frequency configuration index
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Configuration parameter
Event
Method
RSCPConfiguratio
n index
related
traffic:1
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Configuration Parameter
Measurement configuration index: 7
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Configuration Parameter
Measurement configuration index: 7
Thresholds of event e2a-e2f
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Inter-Frequency Handover Parameter SummaryParameter Name Default Value TRUE Value
Measurement 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 Used
Frequency for 2B-95db -95db
Absolute Threshold of the Quality of the Currently Used
Frequency for 2D-95db -95db
Absolute Threshold of the Quality of the Currently Used
Frequency 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
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Inter-Frequency Handover Parameter Summary
Parameter 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-used Frequency for
2B-50dbm -50dbm
Absolute Threshold of the Quality of the Non-used Frequency for2C -50dbm -50dbm
Absolute Threshold of the Quality of the Non-used Frequency 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 and Inter-RAT
measurementsRSCP RSCP
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Inter-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Event Handling
Event 2A/2B/2C
Event 2D
Compressed mode
Configure MC of 2A/2B/2C/2E
Event 2E: attempt to Inter-RAT handover
Event 2F
Close compressed mode Disable inter-freq MC
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Inter-frequency handover
Function Introduction
Measurement Control
Related Events
Event HandlingCase Study
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Inter-Frequency Handover Sample
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Inter-Frequency Handover Sample2
39
Ec_f1
Ec_f2
2D t2F 2D
2
F
2A
2
D
RSCP
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Content
Intra-frequency handover
Inter-frequency handover
Inter-RAT handover
HSDPA handoverHSUPA handover
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Inter-RAT handover
Measurement Control
Related Events
Event Handling
Case Study
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Measurement Control
When to set up inter-RAT Measurement? When to modify inter-RAT Measurement?
When to delete inter-RAT Measurement?
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Parameter Configuration in MC
Inter-frequency events: MeasEvtNum, MeaEvtId Measurement quantity: NonIntraMeasQuan (Ec/N0
or RSCP)
Report mode: InterHoMth (event-based only)
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Inter-RAT handover
Measurement Control
Related Events
Event Handling
Case Study
)1(
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Inter-RAT Events
Layer 3 filter:
Event 3A (default configuration):
&
Event 3C
nnnMaFaF 1)1(
nnnMaFaF 1)1(
Best
N
1i
iUTRANUTRAN LogM10W)(1MLog10WLogM10QA
/2HTQ 3aUsedUsed /2HTCIOM 3aRATOtherRATOtherRATOther
/2HTCIOM 3cRATOtherRATOtherRATOther
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The inter-RAT configuration index
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Configuration parameter
Event
Method
RSCP
Configur
ation
index
related
traffic:1
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Configuration Parameter
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Configuration Parameter
Measurement configuration index: 7
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Configuration Parameter
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Inter-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 for
3A-95dbm -95dbm
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
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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-frequency
and Inter-RAT MeasurementsRSCP RSCP
Share Cover Indication Neighbor Neighbor
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Event Handling
Event 3A/3C: attempt to Inter-RAT handover
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Inter-RAT handover
Measurement Control
Related Events
Event Handling
Case Study
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Inter-RAT Handover Sample
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Inter-RAT Handover Sample1
57
Ec_f1
GSM
2D t2F 2D
2
F
3A
2
D
3A(G)
RSCP
3A(W
)
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Inter-RAT Handover Sample2
58
Ec_f1
GSM
Ec_f2
2D t2F 2D
2
F
2E 3A
2
D
2
E
3A(
G)
RSCP
3A(
W)
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Content
Intra-frequency handover
Inter-frequency handover
Inter-RAT handover
HSDPA handoverHSUPA handover
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Function description
For HSDPA in some cases there is handoverassociated with channel switch
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Intra-frequency handover
HS-DSCH->DCH DCH->HS-DSCH
HS-DSCH->HS-DSCH
T1d timer
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Inter-frequency handover
HS-DSCH->DCH
DCH->HS-DSCH HS-DSCH->HS-DSCH
T1d timer
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Content
Intra-frequency handover
Inter-frequency handover
Inter-RAT handover
HSDPA handoverHSUPA handover
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Function description
For HSUPA in some cases there is handoverassociated with channel switch
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Intra-frequency handover
HS-DSCH/E-DCH->DCH/DCH
DCH/DCH->HS-DSCH/E-DCH
HS-DSCH/E-DCH->HS-DSCH/E-DCH
HS-DSCH/E-DCH->HS-DSCH/DCH
HS-DSCH/DCH->HS-DSCH/E-DCH
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