Content for TR 38.801 Word version: 14.0.0
2 References
3 Definitions and abbreviations
4 Objectives and requirements
5 Deployment scenarios
6 Overall New RAN architecture
7 RAN Architecture and Interfaces
8 Realization of Network Slicing
9 QoS
10 Radio access network procedures
2 References
3 Definitions and abbreviations Word‑p. 9
4 Objectives and requirements
5 Deployment scenarios Word‑p. 10
5.1 General
5.2 Non-centralised deployment
5.3 Co-sited deployment with E-UTRA Word‑p. 11
5.4 Centralized deployment
5.5 Shared RAN deployment Word‑p. 12
6 Overall New RAN architecture
7 RAN Architecture and Interfaces Word‑p. 14
7.1 New RAN Architecture
7.2 5G Architecture Options
7.3 RAN-CN interface Word‑p. 16
7.3.1 RAN-CN interface connectivity scenarios
7.3.2 General principles
7.3.3 NG Interface Functions Word‑p. 17
7.3.4 NG Interface Procedures
7.3.4.1 General
7.3.4.2 NG Interface Procedures Descriptions Word‑p. 19
7.3.4.2.1 General
7.3.4.2.2 Interface Management Procedures
7.3.4.2.3 UE Context Management Procedures Word‑p. 20
7.3.4.2.4 Transport of NAS Messages Procedures Word‑p. 21
7.3.4.2.5 UE Mobility Management Procedures Word‑p. 22
7.3.4.2.6 Paging Procedure Word‑p. 24
7.3.4.3 Potential NG Enhancements
7.3.5 NG interface architecture
7.3.6 NG Control Plane
7.3.7 NG User Plane
7.4 RAN internal interface Word‑p. 26
8 Realization of Network Slicing Word‑p. 29
8.1 Key principles for support of Network Slicing in RAN
8.2 Solutions for selection of Network slice and CN entity by gNB Word‑p. 30
8.2.1 Solution 1
8.2.2 Solution 2 Word‑p. 33
8.2.3 Solution 3 Word‑p. 35
8.2.4 Conclusion Word‑p. 36
8.3 Resource Isolation between slices Word‑p. 37
8.4 Resource management between slices
8.5 Mobility
8.5.1 General
8.5.2 Connected Mode Mobility Word‑p. 38
8.6 Validation of the UE rights to access a NW slice
8.7 Granularity of slice awareness
8.8 Impacts on RAN signalling Word‑p. 39
9 QoS
9.1 Key principles for QoS in RAN
9.2 Uplink QoS marking Word‑p. 42
9.3 QoS impact on handover procedure Word‑p. 43
10 Radio access network procedures
10.1 Dual Connectivity between NR and LTE
10.1.1 General
10.1.2 Option 3/3a/3x
10.1.2.1 General principles for Xx interface
10.1.2.2 Architectural aspects Word‑p. 44
10.1.2.3 Procedural aspects Word‑p. 45
10.1.2.4 SCG split bearer Word‑p. 46
10.1.2.5 QoS aspect
10.1.2.6 General principles for S1 interface Word‑p. 48
10.1.2.7 Xx interface protocols
10.1.2.8 TNL address discovery for Xx interface establishment
10.1.3 Option 4/4a
10.1.4 Option 7/7a/7x
10.1.4.1 Architectural aspects
10.1.4.2 Procedural aspects Word‑p. 50
10.1.4.3 SCG split bearer Word‑p. 51
10.2 New RAN operation
10.2.1 Intra-system Mobility
10.2.1.1 General
10.2.1.2 Intra-system Intra-RAT mobility Word‑p. 52
10.2.1.2.1 Scenario: Inter gNB mobility
10.2.1.2.2 Inter-gNB Handover Variant with in-band Path Switch
10.2.1.3 Intra-system Inter-RAT handover with E-UTRA Word‑p. 53
10.2.1.4 Cell Reselection, Release and Redirection Word‑p. 54
10.2.2 Inter-system Mobility
10.2.2.1 Inter-system Inter-RAT handover with E-UTRA
10.2.2.2 Inter-system intra-RAT handover Word‑p. 55
10.2.3 PDU Session Management
10.2.4 Initial UE Access
10.2.5 Intra-NR dual connectivity Word‑p. 58
