Multi Carrier Inactivity Control
User Guide
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Copyright
© Ericsson AB 2018. All rights reserved. No part of this document may be
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Contents
Contents
1
Feature Overview
1
2
Dependencies
2
3
Operation
3
4
Parameters
4
5
Performance
5
6
Activate Feature
6
7
Deactivate Feature
7
8
Engineering Guidelines
8
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Multi Carrier Inactivity Control
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1
Multi Carrier Inactivity Control Overview
The Multi Carrier Inactivity Control feature reduces power consumption by
deactivation of secondary serving HS-DSCH cells based on user data activity.
Feature Identity:
FAJ 121 1445
Value Package Name:
Mobile Broadband, Two Carriers
Value Package Identity:
FAJ 801 0319
Node Type:
DU Radio Node, Baseband Radio Node
Licensing:
License required.
Summary
The feature limits battery consumption for UE units in MC mode. It provides a
mechanism for deactivation or activation of the secondary serving HS-DSCH cells
based on user data activity. The secondary serving HS-DSCH cell can be
deactivated at user data inactivity, and is activated if the user data inactivity is
discontinued.
RELATED INFORMATION
6. Activate Multi Carrier Inactivity Control on page 6
7. Deactivate Multi Carrier Inactivity Control on page 7
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1
Multi Carrier Inactivity Control
2
Dependencies of Multi Carrier Inactivity
Control
The Multi Carrier Inactivity Control feature has one prerequisite feature that
requires to be activated, and three related features which have special behavior
with the Multi Carrier Inactivity Control feature.
Features
Table 1
Feature Dependencies
Feature
Relationship
Description
Multi Carrier (FAJ 121 1441)
Prerequisite
The Multi-Carrier feature must be activated.
Activation or deactivation of only one secondary
serving cell is not possible for the HSDPA MultiCarrier 3 Carriers or Dual-Band HSDPA MultiCarrier 3 Carriers features. During deactivation,
both secondary serving HS-DSCH cells are
deactivated, and during activation, both secondary
serving HS-DSCH cells are activated.
HSDPA Multi Carrier 3 Carriers (FAJ 121 3909)
Related
Dual-Band HSDPA Multi Carrier 3 Carriers (FAJ 121
3920)
Related
EUL Multi-Carrier (FAJ 121 1491)
Related
When EUL Multi-Carrier feature is enabled and the
secondary UL carrier is active, the Carrier Inactivity
Control is disabled for this UE to avoid deactivation
of the secondary E-DCH cell.
System Functions
This feature affects no system functions.
Hardware
No special hardware requirement is expected for this feature.
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3
Operation of Multi Carrier Inactivity Control
The secondary serving HS-DSCH cells are activated and deactivated by sending
an HS-SCCH order to the UE. More than one secondary carrier can be activated at
the same time.
When UE receives an HS-SCCH order, it responds with an ACK on the HS-DPCCH
(the UE never responds with a NACK).
The secondary serving HS-DSCH cells for UE configured with Multi Carrier are
deactivated if all MC-PQs or 3MC-PQs belonging to the UE have been empty for
the interval determined by the parameter hsdpaMcInactivityTimer.
Note:
When the secondary serving HS-DSCH cells are deactivated:
— The MC-PQs or 3MC-PQs belonging to the UE are not validated for
scheduling in the UE secondary serving HS-DSCH cell.
— The UE does not report CQI for the secondary serving HS-DSCH
cells.
The secondary serving HS-DSCH cells for UE configured with Multi Carrier are
activated again if any of the MC-PQs or 3MC-PQs belonging to the UE contains
more data than the parameter hsdpaMcActivityBufferThreshold.
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Multi Carrier Inactivity Control
4
Parameters for Multi Carrier Inactivity
Control
The Multi Carrier Inactivity Control feature has nine parameters which are used
for the feature configuration.
Feature Configuration Parameters
— NodeBFunction::licenseStateHsdpaMcInactCtrl
— NodeBLocalCell::featCtrlHsdpaMcInactCtrl
— RbsLocalCell::featureStateHsdpaMcInactCtrl
— RbsLocalCell::hsdpaMcInactivityTimer
— NodeBLocalCell::hsdpaMcInactivityTimer
— RbsLocalCell::hsdpaMcActivityBufferThreshold
— NodeBLocalCell::hsdpaMcActivityBufferThreshold
Affected Parameters
The implementation of this feature affects no parameters.
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Performance for Multi Carrier Inactivity
Control
The Multi Carrier Inactivity Control feature has no associated KPIs, counters or
events.
KPIs
This feature has no associated Key Performance Indicators (KPIs).
Counters
This feature has no associated counters.
Events
This feature has no associated events.
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Multi Carrier Inactivity Control
6
Activate Multi Carrier Inactivity Control
The Multi Carrier Inactivity Control feature requires the Multi Carrier feature to be
activated. The feature requires CXC 402 0032 license key installation and
appropriate parameter configuration to be activated.
Prerequisites
The Multi Carrier (FAJ 121 1441) feature is activated.
Steps
1. Install the license key CXC 402 0032 for the feature.
2. Set the attribute for the corresponding MO instance, depending on the node
type.
Node Type
License Control MO
DU-based
RbsLocalCell::featureStateHsdpaMcInactCt
rl = ACTIVATED
Baseband-based Node
FeatureState=CXC4020032 = ACTIVATED
NodeBLocalCell::featCtrlHsdpaMcInactCtrl
= ON
Results
Once completed, the feature is activated in the node.
After This Task
No additional steps are required.
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Deactivate Multi Carrier Inactivity Control
The appropriate parameter configuration allows to deactivate the Multi Carrier
Inactivity Control.
Prerequisites
This feature has no prerequisites for deactivating.
Steps
1. Set the attribute for the corresponding MO instance, depending on the node
type:
Node Type
License Control MO
DU-based
RbsLocalCell::featureStateHsdpaMcInactCt
rl = DEACTIVATED
Baseband-based
NodeBLocalCell::featCtrlHsdpaMcInactCtrl
= OFF
Results
Once completed, the feature is deactivated in the node.
After This Task
No additional steps are required.
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Multi Carrier Inactivity Control
8
Engineering Guidelines for Multi Carrier
Inactivity Control
The Multi-Carrier Inactivity Control feature brings the benefits only when the
inactivity timers for Multi Carrier are shorter than two RNC parameters.
Set the parameter hsdpaMcInactivityTimer to a lower value than the RNC
parameters ChannelSwitching::hsdschInactivityTimer and
ChannelSwitching::hsdschInactivityTimerCPC to have the effect before the
downswitch from CELL_DCH to CELL_FACH. If the inactivity is continued, a
reconfiguration to CELL_FACH is performed, see Channel Switching.
The hsdpaMcActivityBufferThreshold parameter can be set so that the
amount of data corresponding to a single small ping does not trigger an
activation.
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