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5G Spectrum Research Status in China
IMT-2020 (5G) Promotion Group
Oct.20th ,2015
RWS-150050
1
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
CM
CC
TD
-LT
E
CT
CD
MA
CT
CD
MA
CM
CC
GS
M
CM
CC
GS
M
CM
CC
GS
M
CM
CC
TD
-
SC
DM
A
CM
CC
GS
M
CM
CC
TD
-
SC
DM
A
CU
GS
M
CU
GS
M
CU
GS
M
CU
GS
M
CT
CT
CU
WC
DM
A
CU
WC
DM
A
• 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.
CM
CC
TD
-LT
E
CT
TD
-LT
E
CU
TD
-LT
E
CU
TD
-LT
E
CU
FD
D-L
TE
CU
FD
D-L
TE
CT
FD
D-L
TE
CT
FD
D-L
TE
Y2020 Spectrum Demand
3
• 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)
4
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
5
Propagation characteristics
6
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
7
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
8
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.
9
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.
10
Some Views for IMT-2020 Spectrum
Thank You
11
www.imt-2020.cn