2 CSFB subscribers roam with preference on LTE access, no CS-voice service available (only PS based services) Fallback triggered to overlapping CS domain whenever voice services are requested and resumed LTE access for PS services after call completion. CSFB is enhanced with support for DMCR to decrease the call set up time. If the DMCR capability is on and the DMCR is activated in SIB3 then the UE is allowed to send message on RACH or act on received message on FACH before complete reading of SIB11/SIB12/SIB19. The feature Deferred Measurement Control Reading provides faster call setup time for CS Fallback from LTE with release with redirect. Introduction Purpose This instruction is used for the CSFB From LTE with DMCR (FAJ 121 1610 ) activation procedure by MO S Script on software level W12B in RNC side.
3 The following Feature/parameter Node Mo Parameter Required RNC RncFeature CsFallbackLte 1 RNC UtranCell dmcrEnabled 1 DMCR Feature
5 DESCRIPTION CS fallback triggered UE release to WCDMA - Idle Mode. PRECONDITION Enable licence key file CsFallbackLte (CXC 403 0106) in the RNC The timer on the eNodeB to control user inactivity is “ tInactivity Timer” which is set to 10 sec. UE performs the normal attach and goes into idle state due to user inactivity. set rcs tinactivitytimer 10 The deactivation of DMCR feature done at the Utrancell level. set Utrancell =x dmcrenabled CSFB triggered UE release to WDCMA while user is Idle Mode due to inactivity - Mobile originating without DMCR. TEST INSTRUCTION Action: Attach relevant WCDMA UE and LTE UE. Action: Make LTE UE IDLE Mode Action : Make call from WCDMA UE to LTE UE
CSFB Procedure 6
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CSFB Delay 10 CSFB call setup time standards MT : Extend service request To Alerting. Delay 2.2 s from extended service request to CC Alerting Delay 3.6 s from CC alerting to CC connect. Total CSFB time is 5.8 s
11 DESCRIPTION Verify the gain of 1 second in CS call setup using CSFB with DMCR in WCDMA/LTE test environment . PRECONDITION . Enable licence key file CsFallbackLte (CXC 403 0106) in the RNC The timer on the eNodeB to control user inactivity is “ tInactivity Timer” which is set to 10 sec. UE performs the normal attach and goes into idle state due to user inactivity The activation of DMCR feature done at the Utrancell level. set Utrancell =x dmcrenabled 1 We should see SIB3 message to notify about feature activation CSFB triggered UE release to WDCMA while user is Idle Mode due to inactivity - Mobile originating with DMCR TEST INSTRUCTION Action: Attach relevant WCDMA UE and LTE UE. Action: Make LTE UE IDLE mode Action : Make call from WCDMA UE to LTE UE
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CSFB Delay 14 CSFB call setup time standards MT : Extend service request To Alerting. Delay 2.6 s from extended service request to CC Alerting Delay 3.9 s from CC alerting to CC connect. Total CSFB time is 6.5 s
15 DESCRIPTION While PS call on LTE UE, CS fallback triggered UE release to WCDMA. PRECONDITION Enable licence key file CsFallbackLte (CXC 403 0106) in the RNC The de activation of DMCR feature done at the Utrancell level. set Utrancell =x dmcrenabled T C-3 CSFB triggered UE release to WDCMA while PS call is happening - Mobile originating without DMCR . Action: Attach relevant WCDMA UE and LTE UE. Action: Make PS call on LTE UE Action : Make call from WCDMA UE to LTE UE
CSFB Procedure 16 1.MT CSFB call attempt with extend service request. The UTRAN frequency is included in RRC Connection Release message.
CSFB Procedure 17 2. Routing Area Update
18 3. Authentication, call proceeding and radio bearer setup.
19 . Call alerting and setup success
2 nd call from WCDMA UE to LTE UE in PS mode 20 CSFB Time : 6.4 S
CSFB Delay 21 CSFB call setup time standards MT : Extend service request To Alerting. Delay 2.6 s from extended service request to CC Alerting Delay 3.8 s from CC alerting to CC connect. Total CSFB time is 6.4 s
22 Verify the gain of 1 second in CS call setup using CSFB with DMCR in WCDMA/LTE test environment. PRECONDITION Ensure that the preconditions as tested in 3.1 are followed for the appropriate frequency eNodeB / eUtranCell being tested. Enable licence key file CsFallbackLte (CXC 403 0106) in the RNC The activation of DMCR feature done at the Utrancell level. set Utrancell =x dmcrenabled 1 CSFB triggered UE release to WDCMA while PS call is happening - Mobile originating with DMCR. Action: Attach relevant WCDMA UE and LTE UE. Action: Make PS call on LTE UE Action : Make call from WCDMA UE to LTE UE
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CSFB Delay 26 CSFB call setup time standards MT : Extend service request To Alerting. Delay 2.47 s from extended service request to CC Alerting Delay 3.23 s from CC alerting to CC connect. Total CSFB time is 5.7 s
Result 27 IDLE: DMCE Disabled total CSFB time 5.8 s IDLE : DMCR enabled Total CSFB time 6.5 s PS: DMCR dis abled Total CSFB time 6.4 PS: DMCR enabled Total CSFB time 5.7 s