TR 21.915 ★
Release 15 Description –
Summary of Rel-15 Work Items

Use "3GPP‑Page" to get the Word version, and "ETSI‑search" to get the PDF version
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V15.0.0 (PDF) 2019/09 120 p.

Rapporteur:: Mr. Sultan, Alain ETSI

essential Table of Contents for TR 21.915 Word version: 15.0.0

each title, in the "available" or "not available yet" area, links to the equivalent title in the CONTENT

6 Critical Communications Word‑p. 45

6.1 EPC support for E-UTRAN Ultra Reliable Low Latency Communication Word‑p. 45

6.2 Highly Reliable Low Latency Communication for LTE Word‑p. 45

7 Machine-Type of Communications (MTC) and Internet of Things (IoT) Word‑p. 49

7.1 Improvements of Machine-Type of Communications (MTC) and Internet of Things (IoT) Word‑p. 49

7.2 Further enhancements for Extended Coverage GSM for support of Cellular Internet of Things Word‑p. 51

7.2.1 Introduction Word‑p. 51

7.2.2 Energy Efficient Paging Reception with EC Paging Indication channel Word‑p. 51

7.2.3 Deferred System Information Acquisition in EC operation and for PEO Word‑p. 52

7.3 Even further enhanced MTC for LTE Word‑p. 53

7.3.1 Support for new use cases Word‑p. 53

7.3.2 Reduced latency Word‑p. 53

7.3.3 Reduced UE power consumption Word‑p. 54

7.3.4 Increased spectral efficiency Word‑p. 54

7.3.5 Improved access control Word‑p. 55

7.4 Other MTC related work Word‑p. 55

8 Vehicle-to-Everything Communications (V2X) Improvements Word‑p. 57

8.1 Enhancement of 3GPP support for V2X scenarios Word‑p. 57

8.2 Enhancements on LTE-based V2X Services Word‑p. 57

9 Improvements of Mission Critical (MC) Word‑p. 59

9.1 Enhancements to MCPTT Word‑p. 59

9.2 Enhancements to MC Data Word‑p. 60

9.3 Enhancements to MC Video Word‑p. 62

9.4 Other Mission Critical Enhancements Word‑p. 62

9.4.1 MC Security Enhancements Word‑p. 62

9.4.2 MBMS usage for MC communication services Word‑p. 63

10 Features related to WLAN and unlicensed spectrum Word‑p. 64

10.1 WLAN direct discovery Word‑p. 64

10.2 Voice services over WLAN Word‑p. 65

10.3 Unlicensed Spectrum Offloading System Word‑p. 65

10.4 Enhancements to LTE operation in unlicensed spectrum Word‑p. 66

10.5 Other functionalities related to WLAN and unlicensed spectrum Word‑p. 67

11 Other new features Word‑p. 68

11.1 Mobile Communication System for Railways Word‑p. 68

11.2 Northbound APIs related features Word‑p. 69

11.2.1 Common API Framework for 3GPP Northbound APIs Word‑p. 69

11.2.2 Northbound APIs for SCEF - SCS/AS Interworking Word‑p. 71

12 System enhancements Word‑p. 72

12.1 Control plane - user plane separation Word‑p. 72

12.1.1 Separation of CP and UP for Split Option 2 of NR Word‑p. 72

12.1.2 Management Enhancement for EPC Control and User Plane Separation (CUPS) Word‑p. 73

12.2 Quality of Experience (QoE) related Features Word‑p. 74

12.3 Security-related improvements Word‑p. 75

12.4 Virtual Reality (VR), TV, Codec and multimedia-related improvements Word‑p. 75

12.4.1 Test Methodologies for the Evaluation of Perceived Listening Quality in Immersive Audio Systems Word‑p. 75

12.4.2 Addition of HDR to TV Video Profiles Word‑p. 76

12.4.3 Virtual Reality Profiles for Streaming Media Word‑p. 76

12.4.4 FEC and ROHC Activation for GCSE over MBMS Word‑p. 78

12.4.5 Media Handling Aspects of 5G Conversational Services Word‑p. 78

12.5 Codec and multimedia-related improvements Word‑p. 79

12.5.1 Receive acoustic output test in the presence of background noise Word‑p. 79

12.5.2 Server and Network Assisted DASH for 3GPP Multimedia Services Word‑p. 79

12.5.3 SAND for MBMS Word‑p. 80

12.5.4 Framework for Live Uplink Streaming Word‑p. 81

12.5.5 Further video enhancements for LTE Word‑p. 82

12.5.6 Speech quality with ambient noise Word‑p. 82

12.6 Active Antenna System (AAS) Word‑p. 83

12.6.1 Architecture and interfaces Word‑p. 83

12.6.2 OTA requirements Word‑p. 84

12.7 OAM improvements Word‑p. 85

12.8 Other enhancements Word‑p. 87

12.8.1 Simplified HS-SCCH for UMTS Word‑p. 87

12.8.2 Increased number of E-UTRAN data bearers Word‑p. 89

12.8.3 Increasing the number of EPS bearers Word‑p. 90

12.8.4 Enhancement of background data transfer Word‑p. 90

12.8.5 Enhanced VoLTE performance Word‑p. 90

12.8.6 DL interference mitigation for UMTS Word‑p. 91

12.8.7 Enhanced Calling Name Service Word‑p. 92

12.8.8 PS Data Off Phase 2 Word‑p. 93

13 LTE improvements Word‑p. 94

13.1 Further enhancements to Coordinated Multi-Point (CoMP) Operation for LTE Word‑p. 94

13.2 Enhancements for high capacity stationary wireless link and introduction of 1024 QAM for LTE DL Word‑p. 95

13.3 UE requirements for network-based CRS interference mitigation for LTE Word‑p. 96

13.4 Bluetooth®/WLAN measurement collection in LTE Minimization of Drive Tests (MDT) Word‑p. 97

13.5 UL data compression in LTE Word‑p. 98

13.6 UE Positioning Accuracy Enhancements for LTE Word‑p. 98

13.7 UE requirements for LTE DL 8Rx antenna ports Word‑p. 99

13.8 Shortened TTI and processing time for LTE Word‑p. 100

13.8.1 Short processing time for 1 ms TTI Word‑p. 100

13.8.2 Short TTI Word‑p. 101

13.9 Enhanced LTE Support for Aerial Vehicles Word‑p. 105

13.10 Enhancing LTE CA Utilization Word‑p. 106

14 OAM improvements Word‑p. 106

14.1 Other 5G System Charging aspects Word‑p. 106

14.1.1 Service Based Interface for 5G Charging Word‑p. 106

14.1.2 Charging for IMS over 5G System Architecture Phase 1 Word‑p. 107

14.1.3 SMS Charging in 5G System Architecture Phase 1 Word‑p. 107

14.2 Management and virtualization aspects of 5G networks and network slicing Word‑p. 108

15 Work Items for which no summary is needed Word‑p. 110

A Structure of 5GS Rel-15 3GPP work Word‑p. 112

B Process to get further information Word‑p. 114

B.1 General Word‑p. 114

B.2 Direct method Word‑p. 115

B.3 Step by step method Word‑p. 115

$ Change history Word‑p. 118

TR 21.915 ★ Release 15 Description – Summary of Rel-15 Work Items

essential Table of Contents for TR 21.915 Word version: 15.0.0

TR 21.915 ★
Release 15 Description –
Summary of Rel-15 Work Items