5G whitepaper and trial of China Telecom

Dr. Lei Cao China Telecom

5G is an important engine for China Telecom

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Largest network infrastructure in the world To be a comprehensive intelligent information service provider

No.1 Optical Network • Over 3.4 billion FTTH ports

• 160 million wired broadband users

No.1 FDD-LTE • 1.3 million base stations

• 260 million mobile subscribers

No. 1 IoT • 400,000 NB-IoT base stations

• 100 million IoT connections

Big data

IoT AI

Cloud

Block Chain Smart Home Edge

Computing

Corporate Core

CTNet 2025

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China Telecom 5G Technology White Paper

China Telecom released the “China Telecom 5G Technology White Paper” at 2018 MWC-Shanghai on June 26th

The white paper proposes the network evolution strategy of China Telecom which is concluded as “One Basis, Three Principles”

• One Basis：4G and 5G networks will coexist for a long time • Three Principles：

1. Multi-network convergence

2. Phase-by-phase migration

3. Cost efficiency

• SA is preferred, voice fall back to LTE

4G/5G interworking：Choose SA to achieve real 5G

Both SA and NSA can achieve 4G/5G interworking SA is target network solution which can avoid

frequent network upgrade and reduce the complexity of terminals

SA network is the target of network evolution

NSA based on EPC requires frequent network upgrade to evolve to SA

For NSA based on 5GC, LTE eNBs need to be upgraded to eLTE. In this case, 4G and 5G dual connectivity is hard to be realized between different vendors

SA network requires less upgrade

SA network supports 5G new features like network slicing, edge computing, etc.

In early 5G network, eMBB services mainly covers hotspot areas, 4G/5G interworking can be achieved through core network. The eMBB service experience will not be affected as the terminals have a caching mechanism

SA network can provide more new services

In NSA network, terminals will be more difficult to design and expensive to mitigate serious interference at 3.5GHz

SA terminals are easier to be manufactured with lower cost as they do not support dual-connectivity

Terminal for SA network is lower-cost

5G target network architecture “Three Clouds” network architecture based on SDN/NFV, which can be flexibly deployed according

to different scenarios

Control Cloud

Forwar-ding

Cloud

Access Cloud

Flexible and open 5G core network architecture

Edge Computing

Network Cloud：cloud native, Virtual Machine/containerization Infrastructure Cloud：unified and hierarchical infrastructure resource pools

Customized network：business oriented, rapid deployment on demand Security isolation：service and data security isolation of different industries/customers

User plane deployed close to local application on demand：deployed based on scenarios to satisfy the diverse needs of 5G business Capability enhancement：improve user experience and relieve transmission pressure

All Could

Service-based Architecture

Modularized design of Network function：service reuse, scalable network Service-based and IT-based：easy to converge and interconnect with IT network

Network Slicing

5G trial overall plan of China Telecom 2017 2018 2019 2020

R14 5G SI R15 5G first version R16 5G second version

2015.12-2017.3 2017.4-2018.6 2018.6-2019.12

2016

Small-scale field trial Large-scale trial pre-commercial trial

Commercial launch

• 3.5GHz propagation model tuning

• 5G Prototype test

• R15 SA basic trial

• Vertical application PoC

• Multi-vendor end to end test

• 4G/5G interworking

• MEC and multi-access convergence

• Vertical application development and test

First stage of field trial — pilot cities

National central city, megacity

National high-tech industrial base (Suzhou Industrial Park)

Lanzhou

Important traffic route and commercial city at silk road

Southwest science, business, finance center and transportation hub, host all AR/VR international summits

First special economic zone, the window of China's reform and opening

Chengdu

Shenzhen

Xiong’an

Suzhou

Shanghai

State-level new area, “Millennium Plan”

5G innovation service

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5G network slicing for smart grid

5G remote control Bus

Collect, process and monitor electric energy data application type：mMTC Slice requirement：massive connection, high concurrence probability Power Distribution Logic distributed to smart terminals application type：URLLC Slice requirement：low latency, high reliability, high isolation

Service type： eMBB、URLLC

Service requirement：Earlier stage: bus surveillance、4K HD

Video; later stage: tele-operated driving、high accuracy

positioning

Drone VR live China Telecom successfully demonstrated VR live via a drone which carrying

the first CPE(3.5GHz) based on 5G chipset

Service type：eMBB

Service requirement：utilize the large bandwidth of NR to achieve panoramic VR

live broadcast

Drone carrying first CPE(3.5GHz) based on 5G chipset

Watch panoramic video in real time

Thanks!