Service specific load management

Report
Service specific load management
•
•
•
•
•
•
•
•
•
content
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
•
•
•
•
•
•
•
•
•
content
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
Introduction
In a Load Management Context
› The feature introduces enhanced control of the UE selection process for
inter-frequency load balancing and IRAT offload to WCDMA.
Load measurement
Determine traffic load in each individual cell
Load information exchange
Request and exchange load information between cells
Load balancing action magnitude
Determine the amount of offloading needed to balance load
UE selection for load balancing action
Determine and offload suitable UEs
› UE selection for Load Balancing action is based on UE services (QCI)
•
•
•
•
•
•
•
•
•
content
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
Benefits
benefits of sSLM
•
The feature allows the operator to control how users are selected for load
management action based on used service(s)
•
Possibility to require better (target) coverage for users with a certain service (e.g.
VoIP) to qualify for load-triggered
– Similar support is available for coverage-triggered mobility as of L12A
•
Possibility to inhibit users with a certain service (e.g. VoIP) from load-triggered
handovers to a higher E-UTRAN frequency
•
Possibility to inhibit users with a certain service (e.g. VoIP) from load-triggered
handovers to a UTRAN frequency
•
Possibility to require that a user has a certain service (e.g. VoIP) in order to qualify
for load-triggered handovers to a UTRAN frequency
•
•
•
•
•
•
•
•
•
content
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
Feature Description
SSLM new functionality in L14A
› Possibility to apply an offset to the A4/B1 (IFLB/IRAT Offload threshold) depending on QCI (new in
L14A)
› Configurable offset per (frequency relation, QCI)
› If a user has several bearers, the bearer which QCI has largest offset will apply
› Possibility to exclude UEs from load balancing depending on QCI
› Configurable per (frequency relation, QCI)
› A QCI can be configured as forbidden from load-triggered handover
› A QCI can be configured as required for load-triggered handover (new in L14A)
• If more than one QCI is configured as required then a user with at least one required
QCI is qualified for load-triggered handover
• In case of conflict, forbidden overrides required
› By default a QCI is allowed for load-triggered handover
• Such a QCI will not inhibit a load-triggered handover for a user with the QCI
(it is neither forbidden nor required)
Feature Description
SSLM voip example
› Note that only load relations from one cell are illustrated
The A4 threshold (required to qualify for load balancing action)
for VoIP users is 3 dB higher to the higher E-UTRAN frequency
E-UTRAN cells
Frequency
UTRAN cell
Distance
No specific constraints for VoIP users
to the lower E-UTRAN frequency
VoIP users are completely inhibited from
IRAT offload to the UTRAN frequency
Feature Description
mom structure
› Impact on Parameters
content
•
•
•
•
•
•
•
•
•
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
Network requirements
SSLM part of LM features
› As a prerequisite at least one of the following features shall be enabled and Operable.
› FAJ 121 3009 (Inter-frequency Load Balancing) L12B
› FAJ 121 3048 (IRAT Offload to WCDMA) L13B
› FAJ 121 3061 (Inter-frequency Offload) L14A
•
•
•
•
•
•
•
•
•
content
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
NEW PARAMETERS
INTRODUCED PARAMETERS
MO
Level
EUtranFreqRelation
E
U
T
R
A
N
U
T
R
A
N
Parameter name
lbA4ThresholdRsrpOffset
Description
QCI specific offset for the absolute threshold a4ThresholdRsrp
used for load management
Range
0..24
E//
Default
0
Unit: 1 dB
EUtranFreqRelation
lbQciProfileHandling
Specifies QCI profile handling with regard to load management ALLOWED,
ALLOWED
FORBIDDEN,
REQUIRED
EUtranFreqRelation
qciProfileRef
Refers to the QCI profile MO, QciProfilePredefined or
QciProfileOperatorDefined.
N/A
NA
UtranFreqRelation
lbUtranB1ThresholdRscpOffset
QCI specific offset to the threshold b1ThresholdRscp used for
load management
0..24
0
Unit: 1 dB
UtranFreqRelation
lbQciProfileHandling
Specifies QCI profile handling with regard to load management ALLOWED,
ALLOWED
FORBIDDEN,
REQUIRED
UtranFreqRelation
qciProfileRef
Refers to the QCI profile MO, QciProfilePredefined or
QciProfileOperatorDefined.
N/A
NA
content
•
•
•
•
•
•
•
•
•
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
New counters & events
SSLM observability
› No new counters are introduced in this feature.
MO
Level
Counter name
Description
Existing/New/
Modified
EUtranFreqRelation
pmLbMeasuredUe
Records the number of UEs selected for measurements qualifying for load
balancing action towards cells on the related frequency
Existing
UtranFreqRelation
pmLbMeasuredUe
Records the number of UEs selected for measurements qualifying for load
balancing action towards cells on the related frequency
Existing
EUtranFreqRelation
pmLbQualifiedUe
Records the number of UEs qualified for load balancing action towards the related
cell.
Existing
UtranFreqRelation
pmLbQualifiedUe
Records the number of UEs qualified for load balancing action towards the related
cell.
Existing
› No new pmEvents are introduced. The following existing events are reused.
Event
INTERNAL_EVENT_LB_MEAS_UE
INTERNAL_EVENT_LB_QUAL_UE
Event Parameter
Description
EVENT_PARAM_FREQ
Target frequency
Number of UE that are selected to perform event A4
measurement on one target frequency
CGI of neighbor target cells for which UE fulfilled event A4
criteria
Number of UE that fulfilled event A4 criteria
EVENT_PARAM_NR_OF_UES
EVENT_PARAM_NEIGHBOR_CGI
EVENT_PARAM_NR_OF_UES
content
•
•
•
•
•
•
•
•
•
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
Network impact
› No impact is expected from this feature
content
•
•
•
•
•
•
•
•
•
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
SSLM test scope
test cases
› Assumptions:
› All test cases are executed with the following configuration:
 All test cases are executed with 700MHz and 2100MHz band, not other band unless
specifically specified in individual test cases.
 All test cases are executed with 10MHz bandwidth by default unless explicitly stated
by individual test cases
› SSLM Test scope was divided in the following groups
•
•
Feature Activation
Mobility
sslm test cases
Test Type
TC
Test Descriptions
Number
Feature
Activation
SSLM_01
MOBILITY
SSLM_02
MOBILITY
SSLM_03
MOBILITY
SSLM_04
MOBILITY
SSLM_05
MOBILITY
SSLM_06
Demonstrate the license handling and feature activation
for Service specific load Management:
ServiceSpecificLoadMgmt.
Verify IFLB for UE with REQUIRED QCI1
Verify IFLB for UE with QCI1 REQUIRED with additional
lbA4ThresholdRsrpOffset
Verify IFLB for UEs with QCI1 FORBIDDEN, QC5 ALLOWED,
QCI8 REQUIRED
Verify IROW for UE with REQUIRED QCI8 and QCI
FORBIDDEN
Verify IROW for UE with REQUIRED QCI8 with additional
lbUtranB1ThresholdRscpOffset
Lab/Field
Lab
Lab
Lab
Lab
Lab
Lab
sslm_IFLB_03
› Verify IFLB for UE with REQUIRED QCI1 with additional lbA4ThresholdRsrpOffset
› Objective: To verify that UE with QCI1 is qualified for load balanced when the target measured cell has a
better coverage i.e a4ThresholdRsrp + lbA4ThresholdRsrpOffset on QCI1
› Parameter Settings:
MO
Parameters
GS value
Test Value
Serving Cell
eutranFreqToQciProfileRelation,QciProfilePredefined=qci1
lbQciProfileHandling
Required
eutranFreqToQciProfileRelation,QciProfilePredefined=qci1
lbA4ThresholdRsrpOffset
3
eutranFreqToQciProfileRelation,QciProfilePredefined=qci5
lbQciProfileHandling
Allowed
eutranFreqToQciProfileRelation,QciProfilePredefined=qci8
lbQciProfileHandling
Allowed
QciProfilePredefined
qciSubscriptionQuanta
QCI 8:100
500
LoadBalancingFunction
lbCeiling
200
200
LoadBalancingFunction
lbThreshold
30
30
ReportConfigEUtraInterFreqLb
hysteresisA4
10
10
ReportConfigEUtraInterFreqLb
a4ThresholdRsrp
-106
-90
loadBalancing
0 (Not Allowed)
1 (Allowed)
20000
20000
QCI 1:50
EutranCellRelation
QCI 5:2
Neighbor Cell
EUtranCellFDD
cellSubscriptionCapacity
QCI 1:50
QciProfilePredefined
EutranCellRelation
qciSubscriptionQuanta
loadBalancing
QCI 5:2
QCI 8:100
500
0 (Not Allowed)
0 (Not Allowed)
› Pass/Fail Criteria: UE remains on source cell until VoLTE call is placed and target cell RSRP
exceeds the total threshold (rsrp+offset) then UE moves to target cell.
sslm_IFLB_04
› Verify IFLB for UEs with QCI1 forbidden, QCI5 Allowed & QCI8 Required
› Objective: Verify IFLB for UEs with QCI1 FORBIDDEN, QC5 ALLOWED, QCI8 REQUIRED
› Parameter Settings:
MO
Parameters
GS value
Test Value
10000
10000
Serving Cell
EUtranCellFDD
eutranFreqToQciProfileRelation,QciProfilePredefined=qci
1
eutranFreqToQciProfileRelation,QciProfilePredefined=qci
5
eutranFreqToQciProfileRelation,QciProfilePredefined=qci
8
cellSubscriptionCapacity
QciProfilePredefined
qciSubscriptionQuanta
LoadBalancingFunction
lbCeiling
200
500
200
LoadBalancingFunction
lbThreshold
30
30
ReportConfigEUtraInterFreqLb
hysteresisA4
10
10
ReportConfigEUtraInterFreqLb
a4ThresholdRsrp
-106
-90
EutranCellRelation
loadBalancing
0 (Not Allowed)
1 (Allowed)
20000
20000
lbQciProfileHandling
Forbidden
lbQciProfileHandling
Allowed
lbQciProfileHandling
Required
QCI 1:50
QCI 5:2
QCI 8:100
Neighbor Cell
EUtranCellFDD
cellSubscriptionCapacity
QCI 1:50
QciProfilePredefined
qciSubscriptionQuanta
QCI 5:2
QCI 8:100
EutranCellRelation
loadBalancing
0 (Not Allowed)
500
0 (Not
Allowed)
› Pass/Fail Criteria: UE remains on source cell until VoLTE call is terminated then UE moves to
target cell.
SSLM_IROW_06
› Verify IROW for UE with REQUIRED QCI8 with additional lbUtranB1ThresholdRscpOffset
› Objective: To verify that UEs with QCI8 is qualified for offload when the target cell has a better coverage
i.e B1Rscp + B1RscpOffset on QCI8
› Parameter Settings:
MO
Parameters
GS Value
Test Value
Serving Cell
EUtranCellFDD
lbUtranOffloadThreshold
1
ExternalUtranCellFDD
lbUtranCellOffloadCapacity
20000
LoadBalancingFunction
lbUtranOffloadBackoffTime
60
EUtranCellFDD
cellSubscriptionCapacity
eutranFreqToQciProfileRelation,QciProfilePredefined=qci8
lbQciProfileHandling
lbUtranB1ThresholdRscpOf
fset
eutranFreqToQciProfileRelation,QciProfilePredefined=qci8
10000
3000
Required
5
QCI 1:50
QciProfilePredefined
qciSubscriptionQuanta
QCI 5:2
QCI 8:100
500
LoadBalancingFunction
lbCeiling
200
200
LoadBalancingFunction
lbThreshold
30
30
UtranCellRelation
isHoAllowed
false
true
ReportConfigInterLb
UtranB1ThresholdRscp
-100
UtranCellRelation
loadBalancing
2 (OFFLOAD)
› Pass/Fail Criteria: When target cell reaches B1 threshold + B1 offset UE will be moved to the target cell.
•
•
•
•
•
•
•
•
•
content
Introduction
Benefits
Feature Description
Network Requirements
New Parameters
New Counters and Events
Network Impact
SSLM Test Scope
Summary
summary
› The feature is an add-on to features Inter-frequency Load Balancing, Inter-RAT Offload
to WCDMA and Inter-frequency Offload
› OSS - CEX “Self Organized Networks” provides support for filtering out cells on a
certain source frequency relation towards target frequency and apply the settings to
all objects found.
THANK YOU

similar documents