VoLTE (Voice Over LTE)

Overview

VoLTE Background VoLTE Introduction VoLTE Architecture

Basic VoLTE Functions

Speech Codec Scheme & Traffic Model VoLTE Voice Policy Selection Radio Bearer Management Dynamic Scheduling & Power Control SIP Message Parsing for Voice Services Emergency VoLTE Handling VoLTE Benefits VoLTE Network Impacts Keyword 25

VoLTE Capacity Enhancement

Semi Persistent Scheduling & Power Control ROHC

VoLTE Coverage Optimization

TTI Bundling Uplink RLC Segmentation Enhancement CMR Based Voice Rate Control MAC CE-Based Voice Rate Control Inter eNodeB VoLTE CoMP (FDD) Coverage Based VoLTE Experience Optimization VoLTE Coverage Enhancement

VoLTE Quality Improvement

Voice Characteristics Awareness Scheduling Voice Call Connection Delay Optimization Uplink VoLTE Continuous Scheduling UL Compensation Scheduling Voice Specific AMC VoLTE User Prior Access Preferential Access of Voice Services PUSCH RB Reservation of Voice Service UEs Uplink Voice Mute Recovery Enhanced VoLTE Reliability

Power Saving

VoLTE Power Saving

Mobility Management

Intra Frequency Handover Inter Frequency Handover Inter RAT Handover

Other Function on Voice Services

ANR and VoLTE PCI Conflict Detection and Self Optimization CA GSM and LTE Buffer Zone Optimization MLB VoLTE Power Control Optimization PDCCH Resource Management Uplink AMC Enhancement for VoLTE VoLTE Call Delay Optimization Fast Moving Voice Service UE Guarantee

Voice Service Performance Evolution

QoS Requirements Quality Evaluation Capacity Evaluation Performance Evaluation