TABLE OF CONTENTS 1. INTRODUCTION ....................................................................................................................................... 4 2. GLOBAL MARKET TRENDS, MILESTONES AND STANDARDIZATION ............................................ 6 2.1 Mobile Data Growth Forecasts and Trends ...................................................................................... 11 2.2 Wireless Data Revenue ..................................................................................................................... 12 2.3 Mobile Broadband Devices and M2M ............................................................................................... 13 2.4 Mobile Data Speeds .......................................................................................................................... 16 2.5 Mobile Broadband Services and Applications ................................................................................... 18 2.6 Mobile Broadband Deployments & Spectrum ................................................................................... 19 2.7 Milestones from Release 13 to Release 14: LTE/EPC/LTE-Advanced ............................................ 25 2.8 Road to 5G – 3GPP Release 15 Standardization ............................................................................. 3 2 3. STATUS OF 3GPP RELEASE 14: HSPA+ AND LTE-ADVANCED PRO ............................................ 39 3.1 E-UTRAN/LTE-ADVANCED PRO ENHANCEMENTS ........................................................................ 39 3.1.1 Enhancements on Full-Dimension (FD) MIMO for LTE ................................................................. 39 3.1.2 Enhanced LAA for LTE (UL LAA) ................................................................................................... 45 3.1.3 L2 Latency Reduction Techniques for LTE .................................................................................... 54 3.1.4 Enhancement of NB-IoT ................................................................................................................. 58 3.1.5 Further Enhanced MTC for LTE ..................................................................................................... 62 3.1.6 Enhancements of Dedicated Core Networks for UMTS and LTE .................................................. 68 3.1.7 Requirements for Category 1 UEs with Single Receiver for LTE ................................................... 69 3.1.8 SRS Switching between LTE Component Carriers ........................................................................ 70 3.1.9 LTE Based V2X Services including Network & Sidelink Based ..................................................... 73 3.1.10 eMBMS Enhancements for LTE ................................................................................................... 81 3.1.11 Further Indoor Positioning Enhancements ................................................................................... 81 3.1.12 Other Rel-14 LTE Work Items not included in this Section .......................................................... 83 3.2 UTRAN/HSPA+ ENHANCEMENTS ..................................................................................................... 83 3.2.1 Multi-Carrier Enhancements for UMTS .......................................................................................... 83 3.2.2 DTX / DRX Enhancements in CELL_FACH ................................................................................... 85 3.2.3 RRC Optimization ........................................................................................................................... 86 3.2.4 QoE Measurement Collection for Streaming .................................................................................. 86 3.2.5 HSPA & LTE Joint Operation ......................................................................................................... 86 3.2.6 DL Interference Mitigation .............................................................................................................. 87 3.3 NETWORK SERVICES RELATED ENHANCEMENTS ........................................................... 87 3.3.1 Control and User Plane Separation (CUPS) .................................................................................. 87 3.3.2 Mission Critical Improvements including Public Safety .................................................................. 9 0 3.3.3 Paging Improvements .................................................................................................................... 91 3.3.4 OAM&P ........................................................................................................................................... 92 3.3.5 Enhancement for TV Service ......................................................................................................... 97 3.3.6 S8 Home Routing for VoLTE .......................................................................................................... 98 1 4. STATUS OF IMT 2020 IN ITU AND 3GPP ........................................................................................... 100 4.1 SPECIFYING IMT-2020 – THE ITU-R (WP5D) ROLE ....................................................................... 100 4.1.1 The ITU-R “Vision” Toward 5G ..................................................................................................... 102 4.1.2 IMT-2020 Compliance, Requirements and Evaluation ................................................................. 103 4.1.6 Additional Information on IMT-2020 and ITU-R Publications ....................................................... 106 4.2 3GPP PLANS TOWARD IMT-2020 .................................................................................................... 106 5. PROGRESS OF 3GPP RELEASE 15 AND RELEASE 16 ...................................................... 108 5.1 5G RAN ............................................................................................................................................... 108 5.1.1 Overview ....................................................................................................................................... 108 5.1.2 Release-15 5G RAN: Architecture, Protocols and Features ........................................................ 113 5.1.3 Release 15 5G RAN Study Items ................................................................................................. 165 5.1.4 Release 15 5G RAN Specifications .............................................................................................. 178 5.2 LTE/E-UTRAN ENHANCEMENTS ............................................................................................. 182 5.2.1 Enhancements on LTE-based V2X Services ............................................................................... 182 5.2.2 Further NB-IoT Enhancements .................................................................................................... 186 5.2.3 UE Positioning Accuracy Enhancements for LTE ........................................................................ 191 5.2.4 1024QAM for LTE DL ................................................................................................................... 192 5.2.5 Enhancing LTE Carrier Aggregation (CA) Utilization ................................................................... 192 5.2.6 LAA for the CBRS 3.5GHz Band in US ........................................................................................ 193 5.2.7 Enhanced LTE Support for Aerial Vehicles .................................................................................. 194 5.2.8 UL Data Compression in LTE ....................................................................................................... 199 5.2.9 Other LTE Rel-15 Features/Enhancements ................................................................................. 201 5.3 5G SYSTEM ARCHITECTURE And NETWORK RELATED FEATURES ........................................ 202 5.3.1 Key Architecture Requirements: ................................................................................................... 203 5.3.2 Control Plane Requirements ........................................................................................................ 203 5.3.3 User Plane Requirements ............................................................................................................ 203 5.3.4 Support of Concurrent Access to Local and Centralized Services .............................................. 204 5.3.5 5G Next Generation System Architecture .................................................................................... 204 5.3.6 Different Deployment Options With ePC and 5GC ...................................................................... 209 5.3.7 5G Interworking with Non-3GPP Access Networks ..................................................................... 213 5.3.8 Network Slicing ............................................................................................................................. 214 5.3.9 Subscription Authentication in 5GC .............................................................................................. 215 5.3.10 5G Core Quality of Service (QoS) Mechanism .......................................................................... 217 5.3.11 5G Policy Framework ................................................................................................................