Procedure Procedure
1
1 Start the OMS Element Manager.Start the OMS Element Manager.
2
2 Go to the IUO object.Go to the IUO object. Object path:
Object path:TopologyTopology ! !RootRoot ! !RNCRNC ! !IUOsIUOs ! !IUO-xIUO-x
3
3 Set the value of theSet the value of the ReEstDuringCSCallSetupEnabledReEstDuringCSCallSetupEnabled to to DisabledDisabled.. Sub-steps
Sub-steps a)
a) RigRightht-c-cliclick tk the he obobjecjectt ! !Edit parametersEdit parameters
b)
b) In theIn theAdmission ControlAdmission Control tab, set the value of the tab, set the value of the ReEstDuringCSCallSetupEnabled
ReEstDuringCSCallSetupEnabled parameter to parameter to DisabledDisabled..
c)
c) ClickClickApplyApply..
Result Result
Expected outcome Expected outcome The
The ReEstDuringCSCallSetupEnabledReEstDuringCSCallSetupEnabled parameter is successfully disabled, and parameter is successfully disabled, and the
theRAN3376: Accelerated Voice SetupRAN3376: Accelerated Voice Setup feature is deactivated. feature is deactivated.
3.2
3.2
RAN2922:
RAN2922:
Control
Control
Channel
Channel
Interference
Interference
Cancellation
Cancellation
Benefits, functionality, system impact, reference data, instructions of the feature Benefits, functionality, system impact, reference data, instructions of the feature The
The RAN2922: Control Channel Interference CancellationRAN2922: Control Channel Interference Cancellation feature introduces interference feature introduces interference cancellation for Control channels such as DPCCH and HS-DPCCH.
cancellation for Control channels such as DPCCH and HS-DPCCH.
3.2.1
3.2.1
RAN2922
RAN2922
benefits
benefits
Benefits of RAN2922: Control Channel Interference Cancellation feature Benefits of RAN2922: Control Channel Interference Cancellation feature
The benefit of the
The benefit of the RAN2922: Control Channel Interference CancellationRAN2922: Control Channel Interference Cancellation feature can be feature can be measured by the KPIs related to HSUPA cell and user throughput. Uplink throughput measured by the KPIs related to HSUPA cell and user throughput. Uplink throughput gains are achieved with the available baseband resources.
gains are achieved with the available baseband resources. The feature complements the existing
The feature complements the existing RAN1308: HSUPA Interference CancellationRAN1308: HSUPA Interference Cancellation and and RAN2250: Enhanced HSUPA IC
RAN2250: Enhanced HSUPA IC and the overall gain is higher with all 3 features and the overall gain is higher with all 3 features activated as compared to individual feature gains.
3.2.2 RAN2922 functional description
The RAN2922: Control Channel Interference Cancellation feature introduces interference cancellation for UL Control channels namely DPCCH and HS-DPCCH. With HSUPA Interference Cancellation features RAN1308 and RAN2250 interference caused by 2ms TTI HSUPA UEs are cancelled. Essentially, interference caused by DPDCH,
E-DPCCH and E-DPCCH of 2ms UEs is cancelled. Control Channel Interference
Cancellation (CCIC) feature enhances this further by cancelling the interference caused by DPCCH and HS-DPCCH of 2ms, 10ms HSUPA UEs as well as Rel99 UEs. With this all UEs receive DPDCH/E-DPDCH on the cleaned residual stream.
3.2.3 RAN2922 system impact
RAN2922: Control Channel Interference Cancellation interdependencies between features and impact on system performance and capacity
Interdependencies between features
The RAN1308: HSUPA Interference Cancellation feature must be enabled before activating the RAN2922: Control Channel Interference Cancellation feature. Impact on interfaces
There are no impact on interfaces.
Impact on network management tools
The RAN2922: Control Channel Interference Cancellation feature has no impact on network management tools.
Impact on system performance and capacity
The RAN2922: Control Channel Interference Cancellation feature increases UL cell capacity and UL throughput due to reduced UL interference.
3.2.4 RAN2922 reference data
RAN2922: Control Channel Interference Cancellation requirements, measurements and counters, parameters, and sales information
Requirements
Table 7 RAN2922 hardware and software requirements
RAS IPA-RNC mcRNC AirScale RNC Flexi Multiradio
BTS
Flexi
Multiradio 10 BTS
WCDMA 18 Support not required Support not required Support not required Not supported WBTS18 OMS NetAct MSC SGSN MGW UE
Table 7 RAN2922 hardware and software requirements (Cont.)
OMS NetAct MSC SGSN MGW UE
NetAct 17.8 SP1801
Alarms
There are no alarms related to the RAN2922: Control Channel Interference Cancellation feature.
Commands
There are no commands related to the RAN2922: Control Channel Interference Cancellation feature.
Measurements and counters
There are no counters related to the RAN2922: Control Channel Interference Cancellation feature.
Key performance indicators
If cell traffic is Voice/HSDPA (UL DCH) dominated with small to medium number of E-DCH users (HSUPA), with CCIC the UL throughput of EE-DCH users is increased. This gain can be seen on related KPIs such as HSUPA MAC-es data volume at RNC [kbit] and active HSUPA cell throughput.
The following legacy KPIs related to cell throughput and user throughput cover the benefit of the feature:
Table 8 Key performance indicators
KPIID KPIname
RNC_931c HSUPA MAC-es data volume at RNC RNC_1883d Active HSUPA cell throughput RNC_5460a Average HSUPA user throughput RNC_2050b Active HSUPA 2ms TTI throughput RNC_2051b Active HSUPA 10ms TTI throughput
Parameters
Table 9 New parameter introduced by RAN2922
Full name Abbreviated name Managed object Parent structure Control Channel Interference Cancellation enabled cchicEnabled MRBTS/B TSSCW -Sales information
Table 10 RAN2922 sales information
Pricing type License control Activated by default
Application software (ASW) BTS License key No
3.2.5 Activating RAN2922
Instructions to activate the RAN2922: Control Channel Interference Cancellation using the BTS Site Manager.
Before you start
The license of features, RAN1308 and RAN2922 should be ON. Install the feature license:
• License name: Control Channel Interference Cancellation
• Feature code of the license: 0000030504 • License type: On/off license
This feature activation is controlled through BTS long term On/Off license. Preconfiguration:
Ensure that the RAN1308: HSUPA Interference Cancellation feature is enabled before activating of the RAN2922 Control Channel Interference Cancellation feature:
• RAN1308: HSUPA Interference Cancellation
The benefits can be further increased by utilizing the following features:
• RAN3040: IRC Receiver
• RAN2250: Enhanced HSUPA IC • RAN3044: Uplink CoMP
Procedure
1 Open the BTS Site Manager.
2 Go to the Commissioning interface.
3 Configure the PIC pool for Local Cell group, which belong to the Flexi Multiradio 10 BTS.
4 Check the Control channels interference cancellation in use field to enable the RAN2922: Control Channel Interference Cancellation feature at the BTS.
Figure 1 RAN2922 activation window
Expected outcome:
On setting the control channels interference cancellation in use field then the
cchicEnabled parameter is activated on the PIC cells in the PIC pool within Flexi Multiradio 10 BTS.
Unexpected outcome:
On modification of the cchicEnabled parameter is unsuccessful then the Control Channel Interference Cancellation feature is disabled.
g
Note: The CCIC cannot be activated in the PIC pool within FSMr2.3.2.6 Verifying RAN2922
Procedure
1 Compare the uplink throughput related KPIs before and after the feature activation.
Expected outcome
Uplink cell throughput is higher when RAN2922 Control Channel Interference Cancellation is activated. The achieved gains are dependent on the traffic profile. For further information, see section Key performance indicators.
3.2.7 Deactivating RAN2922
Instructions to deactivate the RAN2922: Control Channel Interference Cancellation feature using the BTS Site Manager.
Procedure
1 Open the BTS Site Manager.
3 Uncheck the Control channels interference cancellation in use field to disable the RAN2922: Control Channel Interference Cancellation feature at the BTS.
Figure 2 RAN2922 deactivation window
4 If there is no PIC pool configured in the Flexi Multiradio 10 BTS then cchicEnabled is not allowed to set from BTS SM.
Expected Outcome
On deactivation of the parameters cchicEnabled, the CCIC is deactivated on the PIC cells in the configured PIC pool within Flexi Multiradio 10 BTS which results in
deactivation of the RAN2922 Control Channel Interference Cancellation feature. Unexpected outcome
The RAN2922 functionality remains enabled.
