5G Spectrum Research Status in China

IMT-2020 (5G) Promotion Group

Oct.20th ,2015

RWS-150050

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IMT frequency band Planned in China

TDD

825 835 870 880 889 915 934 960 909 954 1710 1755 1785 1850 1735 1830 1880MHz 1805

FDD FDD FDD FDD FDD FDD

2025 2010

TDD

2400 2300

TDD

2130 2125 2170 2110

FDD

1920 1955 1980 1935

FDD

1880 2635 2575 2690MHz 2500

TDD

1940 2145 2320 2370

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• Frequency band plan for IMT in China is 687MHz which 477MHz are allotted . With

FDD 272MHz and TDD 205MHz.

• Mainly in 800/900MHz，1.8GHz，2GHz，2.3GHz，2.6GHz.

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Y2020 Spectrum Demand

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• Spectrum demand estimate towards 2020 for Beijing downtown based on the data

from 3 incumbent operators

Estimation methods

Spectrum demand of China in 2020 (MHz)

IMT-2020 (5G) PG

1350-1810

M.1768 1490-1810

FCC 1540-1800

GSMA 1865

Note: Global demand (WP 5D) 1340 - 1960 MHz

Deficit in 2020 is over 1GHz

6540

11720

3200

5600

4140

8860

2025年（MHz） 2030年（MHz）

IMT-2020-Y2030 frequency demand estimation

IMT-2020 PG Method KPI Method ITU-R M.1768 Method FCC Method

Y2030 Spectrum Demand (preliminary result)

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3040 2720 2920 3380

2040 2140

Spectrum demand below 6GHz

• Y2020-2025，the spectrum below 6GHz is over than 50%

• Y2025-2030，the new demands are mainly above 6GHz，the maximal

requirement is up to 11.7GHz.

Potential Candidate Bands for 5G

• Several potential candidate bands within 6~100GHz are selected.

• Different bands have different channel properties and coexistence

situations.

• Studies on channel measurement, modeling and coexistence are

ongoing.

• To promote establishing a new agenda item in WRC-19.

0 3GHz 6GHz 100GHz 2G/3G

refarming 3.3 ~

3.4

4.4 ~

4.5

4.8 ~

4.99

Get new bands below 6GHz in WRC-15 AI 1.1

2015 2019 Low-frequency bands below 6GHz are always

necessary for IMT

High-frequency bands within 6~100 GHz can be introduced in 2019 and beyond

24~30 40-50 71-76 81-86 450

MHz

3.4 ~

3.6

• Exploit the bands identified for IMT in the Radio

Regulations, including 450~470MHz, 698~806MHz,

and 3400~3600MHz

31 ~ 34

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Propagation characteristics

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Scenarios

Platform

Channel

modeling

airport gym railway station office shopping mall

broadband measurement platform supporting millimeter wave band

Large scale：pathloss, shadowing

Small scale：delay, angel spread, doppler

Channel

model

Preliminary channel measurements at 28GHz

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Preliminary indoor channel measurements at 28GHz.

Hall

Office

Corridor

Frequency 28GHz Bandwidth 1GHz

Distance <30m

exponent Hall 2.19

Office 1.76 Corridor 1.21

Coexistence study

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Link budget

calculation

Simulation

Semi-real test

Source Victim

Tx power Tx gain Rx gainChannel

lossRx power

d

LTE and RDSS compatibility test

Spectrum Sharing Tech.

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Intra-operator inter-RAT

Sharing in unlicensed band

Frequency

ISM frequency band

IMT IMT WiFiWiFi

Frequency

IMT WiFi

Sharing in secondary access band

satellite

TVMacro cell

Small cell

frequency

IMT satelliteTV

……

Dynamic use

Small cell

Small cell

RAT A RAT B

carrier 1 carrier 2 carrier 3 carrier 1 carrier 2 carrier 3

RAT A

Node BRAT B

Node B

carrier 1 carrier 2 carrier 4 carrier 1 carrier 2 carrier 3

Time 1

Time 2

RAT A RAT BRAT B

Operator - 1 Operator - 1 Operator - 1

Operator - 1Operator - 1

Operator - 2Operator - 2

operator-2

Time -2

Time -1

Time -3

Frequency

Frequency

Frequency

operator-1

Inter-operator

Spectrum Sharing Scenarios Key Technologies

Network architecture and interface

High layer technology

Physical layer technology

RF technology

Coexistence and network design

Security

• eMBB and IoT are the key drivers for IMT-2020.

• The deficit in Y2020 is above 1GHz. Low-frequency bands below 6GHz are always necessary for IMT. We hope to get new bands below 6GHz in WRC-15 AI 1.1.

• The frequency bands above 6GHz will be use after Y2019. Studies on channel measurement, modeling and coexistence are ongoing work. To promote establishing a new agenda item in WRC-19.

• We should strength the cooperation and do our best to found the common spectrums for 5G.

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Some Views for IMT-2020 Spectrum

Thank You

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www.imt-2020.cn