1. Vision and Technologies for 5G
RWS
Vision and Technologies for 5G
CMCC

2. Information a finger away, everything in touch
Vision of 5G Life
Information a finger away, everything in touch

3. Key Capabilities to Realize the Vision
enhanced Mobile broadband (eMBB)
High-Capacity Hot-Spot
Seamless Wide-Area Coverage
User experienced data rate: 1 Gbps
Peak data rate: Tens of Gbps
Traffic volume density: Tens of Tbps/km2
User experienced data rate: 100 Mbps
massive MTC (mMTC) and critical MTC (cMTC)
Low-Power Massive-Connections
Low-Latency High-Reliability
Connection density: 106 / km2
Ultra-low power consumption/Ultra-low cost
Air interface latency: 1 ms
Reliability: nearly 100%

4. 5G Overview: Dual Path to meet IMT-2020 Requirements
User experienced data rate (Gbps)
0.1 to 1 Gbps
Connection density (104/Km2)
1 m connections/Km2
Traffic volume density (Tbps/Km2)
Tens of Gbps
End to end latency (ms)
ms level
Evolution path towards 5G
New radio path towards 5G
Peak data rate (Gbps)
Tens of Gbps
Mobility (Km/h)
500+ Km/h
Energy
efficiency
Spectrum
efficiency 5G 4G
Cost
efficiency
Continues to evolve in parallel with new radio
Evolution path strives to fulfill all IMT-2020 requirements
Phased approach
New radio path fulfills all IMT-2020 requirements

5. Evolution Path SI/WI Arrangement
Certain IMT-2020 requirements can be met by ongoing SI/WIs
Current SI/WI still continues
Fill out gap with IMT-2020 requirements, such as area traffic capacity and mobility
meet specific deployment needs, such as UL capacity enhancement
New SI/WIs are established to
IMT-2020 requirements
Example solutions
SI/WI status
Peak data rate
32 CC CA
Established SI/WIs
Latency
TTI shortening
Connection density
NB-LTE or Cellular IoT
Spectrum efficiency (SE)
3D-MIMO
Area traffic capacity
Ultra dense network
To be established in R15/16
Mobility
RS enhancements
User experienced data rate
CA + narrow beamforming
Network energy efficiency (EE)
EE-SE Co-Design (e.g. Dynamic Cell OnOff)

6. Green and Soft 5G System Concept Core Network
SDN/NFV
PTN
Transportation network
PON
Unified RAN architecture + Common high layer protocol（UCN, including C-RAN)
High Freq. RIT
Low Freq. New RIT
Massive-MTC RIT
Mission-Critical RIT
SDAI(Adaptive radio access)
LTE evolution Low freq. eMBB
CIoT or NB-LTE
Latency redu.
V2X
LTE Evolution RIT
Seamless wide-area
coverage
Hotspot &
High data rate
Low-power &
massive-connections
Low-latency &
high-reliability

7. New Radio Path SI/WI arrangement
15.9.
15.12.
16.3.
17.6.
18.9.
19.12.
R14
R15
R16
RAN
Workshop
RAN SI: Scope & Requirements
SI: Channel Modeling
SI: New RIT (including frame structure) for all use cases
WIs: LF New RIT for eMBB (P1)
WIs: LF New RIT for eMBB (P2)
WI: HF New RIT for eMBB
WI(s): massive MTC
WI(s): critical MTC
Exact start time FFS
Proposed Objectives for RAN SI: Scope and Requirements
Identify the typical usage scenarios, and corresponding technique definition, e.g., definition with deployment band, coverage target, user density, access intensity (Call Attempts per-second), maximum mobility speed, etc.
Develop requirements for the next generation access technologies for the identified usage scenarios taking into account the ITU-R discussion on IMT-2020 vision as well as 3GPP operators’ own requirements if explicit deployment requirement is claimed
Formulate the requirements and specification target of different phases

8. New radio – Frame Structure Overview
Continue to maximize TDD/FDD commonality in new radio
Study universal frame structure for paired/unpaired/unlicensed bands
Scalable to mmW band
Rel-14 (SI)
Rel-15 (WI)
Rel-16 (WI)
Above 6G
mmW
New frame structure
sub 6G Hz
Unlicensed
New Frame structure
（low frequency）
Flexible UL/DL
Improved UL/DL coexistence
Support unified HARQ timing
Support scalable numerology
Unlicensed band continues to be non-standalone
New FS to be included in phase 1 SI/WI, 删掉4G/4.5G，增加需求
Licensed TDD
Licensed FDD

9. New Radio – Frame Structure Details
Flexible UL/DL
Each subframe can be dynamically configured as UL or DL subframe
No predefined UL/DL configuration
Consider DL-UL interference at the beginning of R14
Proper control channel / RS multiplexing between UL and DL
The FS may be firstly applied on TDD bands, and then extended to FDD band via, e.g., mechanisms similar to flexible duplex.
TTI DL UL
interference

10. New Radio: mmW channel modeling
6-100GHz channel modeling is still blank in 3GPP
Channel characteristic in high frequency
much larger pathloss
more directional propagation
Shorter delay spread
Pathloss
Power and AOA (360*2)
Maximum excess delay
mmW
LTE f f t t
Shorter OFDM symbol
Larger subcarrier spacing
Massive array at eNB
Beam tracking

11. New Radio – Massive MIMO
Common MIMO Framework for
R13 3D-MIMO
New radio low frequency
New radio mmW
UL signals are exploited to greatly reduce number of antenna port for each UE
eNB 64 Tx antenna
First polarization
Second polarization UE
eNB = +
SRS
CSI-RS virtualization
based on SRS
UE-specific
Beamformed CSI-RS
CSI feedback
First CSI-RS port
Second CSI-RS port
UE feedback co-phase among polarizations

12. Network Openness Layer
5G E2E Architecture
Flexible Access, Efficient Process, Smart Control, Open Network
Orchestration
API
Network Openness Layer
Smart Pipe
Added-value
Big Data
OTT
MVNO
Enterprise
Control Cloud
User Data
Policy
Control
Service Platform
（Firewall,NAT，…)
Data process
Control Coordination
Data Process
Cpmtrol Process
Process Cloud
Data Forwarding
User HSS
Data
Control
Access Cloud
Data AP
Signal node
Data AP
Wi-Fi
D2D
Based on new IT technology and new mobile service oriented future network architecture
5G is the opportunity to redesign the architecture and rethink some basic network concept: interface vs. API, w/o tunnel, modularization/decomposition, QoS, access agnostic…

13. 5G RAN Logical Architecture
Easy Operation
Service & content awareness
Localized data processing
Unified access & seamless mobility
Flexible Topology

14. Key consideration of 5G RAN
User Centric Network (UCN)
Flatter Architecture
Restructuring of Core & RAN
Decoupling of Network and RIT/RAT
Edge services over RAN, local breakout, Local switching
Flexible Functionality and Topology
Diverse access point
Configurable protocol and functionality Split
Multi-connectivity
Smart RAN
UE & service awareness
Traffic steering and continuity
Cross layer optimization between Radio and Application
Easy Operation
Autonomous Network
Multi-RAT integration
SDN/NFV/C-RAN based

15. Rethink 5G Fronthaul: NGFI based C-RAN
Rethink Fronthaul: NGFI for 5G
NGFI(Next Generation FrontHaul) architecture:
Radio cloud center: centralized processing, cloud platform
Radio Remote System: distributed location, antenna-related processing
NGFI: BBU-RRU function re-split, Ethernet based FH network
The design principles of NGFI
Traffic dependent and enable statistical multiplexing for FH
Decoupling antenna-related proc. & non-antenna related proc., cell proc. & UE proc., and UL&DL

16. Summary
Dual path and new architecture to fulfill IMT-2020 requirements
New radio path to meet all requirements
Evolution path strives to meet all requirements
Evolution path
Current SI/WI continues in parallel with new radio path
New SI/WIs are established according to
meet IMT-2020 requirements, such as UDN, and high mobility enhancement
meet specific deployment needs, such as UL capacity enhancement
New radio path
Study technical feasibility of universal frame structure for paired/unpaired/unlicensed band, and scalable to mmW bands
Consider DL-UL interference and massive MIMO at the beginning of R14
R14 SI should consider forward compatibility with mMTC and cMTC
Low frequency WI may start before high frequency WI
New architecture
New SI on network to support flexible access, efficient process, smart control and open network
including UCN, NGFI based C-RAN deployment
什么是5G（演进和新空口），5G怎么构成(phase 1/2 organization)，5G怎么组织，5G部署规划（smooth transition）