mytelcolearning

In normal procedure after T310 expire RLF trigger and UE context should  get restored within T311  Normal RLF trigger HO start before T311 expiry( UE context information available with Source eNB and MME) , In Enhanced RLF trigger case UE context information available with Target eNB via MME from source eNB so in that case reestablishments success chance is more w.r.t normal RLF trigger Handover LTE3105: RLF Triggered HO Enhancements feature improves call drop rate by allowing radio link failure (RLF) triggered handovers during ongoing RRC reconfiguration procedures Impact of testing  VoLTE DCR  reduced by 13.6% VoLTE Mute Call Rate reduced by 5% No of Cells with VoLTE drop call rate >1% [CBBH] reduced by 6%  No of Cells with VoLTE RAB Setup Success Rate <98%[CBBH] reduced by 14% 

Issue:- Incoming csfb on B party is failing and A party hears number busy, however csfb is successful for B party when originates voice call When the A/B is in a call, the Apple Watch on the A side sends an "Attach Request" to the PCRF to request the establishment of a Bearer. At this time, the PCRF sends a command to disconnect the Handset Bearer in the original call, causing a disconnection Sution , Apple UE Software issue