RLF inhancement feature and its impact on Volte KPIs
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%