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Content for
TR 21.915
Word version: 15.0.0
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5
The 5G System (5GS) - Phase 1
5.1
Work organisation for 5GS
5.2
The 5GS service aspects
5.3
Overview of the 5GS architecture
5.5
One step deeper into the 5GS
5.6
Other 5G aspects
5
The 5G System (5GS) - Phase 1
5.1
Work organisation for 5GS
5.2
The 5GS service aspects
5.3
Overview of the 5GS architecture
Word‑p. 10
5.3.1
Introduction
Word‑p. 11
5.3.2
The NSA versus SA architecture
5.3.3
Overview of the Core Network
Word‑p. 12
5.3.4
Overview of the Access Network
Word‑p. 13
5.3.5
References for 5GS Stage 2
5.5
One step deeper into the 5GS
Word‑p. 14
5.5.1
Functional split between Radio and Core
5.5.2
The 5G Core Network
Word‑p. 15
5.5.2.1
Main NFs
5.5.2.2
Specificities of the 5G Core Network and associated NFs
Word‑p. 16
5.5.2.2.1
Local hosting of services and Edge Computing
5.5.2.2.2
Network slicing
5.5.2.2.3
Unified access control
Word‑p. 17
5.5.2.2.4
Support of 3GPP and non-3GPP access
5.5.2.2.5
Policy framework and QoS support
5.5.2.2.6
Network capability exposure
Word‑p. 18
5.5.2.2.7
Other specific services
5.5.2.2.8
Other 5G specificities
5.5.2.3
CN protocols
5.5.3
The 5G Access Network
Word‑p. 20
5.5.3.1
Introduction
5.5.3.2
Overview of the AN Control Plane
Word‑p. 21
5.5.3.3
Overview of the AN User Plane
Word‑p. 22
5.5.3.4
The higher layers of the AN
5.5.3.4.1
Layer 2 related aspects: MAC, RLC, PDCP user plane, PCP control plane, and SDAP
5.5.3.4.2
RRC related aspects
Word‑p. 23
5.5.3.5
The Access Network interfaces
5.5.3.5.1
Overview
5.5.3.5.2
The Xn and X2 interfaces
5.5.3.5.3
The NG and S1 interfaces
Word‑p. 24
5.5.3.5.4
The F1 interface
Word‑p. 25
5.5.4
Radio Physical layer aspects
5.5.4.1
Numerologies, waveform and frame structure
5.5.4.2
Physical Channels and Signals in NR
Word‑p. 26
5.5.4.3
Initial access and mobility
Word‑p. 27
5.5.4.4
MIMO aspects
Word‑p. 29
5.5.4.5
PDCCH and PDSCH
Word‑p. 30
5.5.4.6
PUCCH and PUSCH
Word‑p. 31
5.5.4.7
Scheduling/HARQ
Word‑p. 32
5.5.4.8
Carrier Aggregation, Bandwidth Parts, and LTE/NR dual connectivity
Word‑p. 33
5.5.4.9
NR-LTE co-existence
5.5.4.10
Supplementary Downlink
5.5.4.11
Supplementary Uplink
5.5.4.12
UL TPC
5.5.5
Frequency aspects
Word‑p. 34
5.6
Other 5G aspects
Word‑p. 36
5.6.1
5G AN connected to 4G AN: NSA and EDCE5
5.6.1.1
Overview
5.6.1.2
CN impacts: EPC enhancements to support 5G New Radio via Dual Connectivity (EDCE5)
5.6.1.3
AN impacts: NSA radio protocol architecture
Word‑p. 38
5.6.1.3.1
Control Plane
5.6.1.3.2
User Plane
5.6.2
LTE connectivity to 5G-CN (4G AN with 5G CN)
Word‑p. 39
5.6.3
Security aspects of the 5G System - Phase 1
Word‑p. 40
5.6.4
Charging and OAM aspects of 5G System - Phase 1
Word‑p. 43
5.6.4.1
Data Charging in 5G System Architecture Phase 1
5.6.4.2
Other 5G System Charging aspects
Word‑p. 44