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TDD Paves the Way to 5G
XGP TDD Forum 2016 in Osaka
2016-11-29
Göran Berntson
Huawei
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ROADS to Networks of 2020
Real-time
On demand
All online
DIY
Social Industry 4.0
Big Data Social Network Artificial Intelligence
BYOD VR/AR
xGbps Cloud IoT
3
Different Challenges and Gaps to Reach 5G
Network
Architecture
Slicing Ability
Required
Connections
1,000K Connections
Per Km2
Mobility
500km/h
High-speed
Railway
Throughput
10Gbps
Per
Connection
Latency
1 ms
E2E
Latency
5G
100Mbps 10K 350Km/h 30~50ms Inflexible
LTE
GA
P 30~50x 100x 100x 1.5x NFV/SDN
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TDD Advantages Pave the Way to the Future
Experience @
High Freq Band
Architecture:
CloudRAN
New Air Interface
Smooth 5G Evolution
4.5G (TDD+) Prepared
Benefit from D-MIMO with
CloudRAN
3.5GHz is the most popular
candidate 5G band @ sub-6GHz
Key Technologies:
Massive MIMO
Benefit existing TDD UEs
Hardware evolve to 5G
Vertical Markets
Start incumbent new
ecosystem
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Huge amount of TDD Spectrum is a Gold Mine
1540MHz TDD Spectrum
Released by 2020
Sub-6GHz
33.25GHz Candidate TDD Spectrum
After 2020
Above 6GHz
Group 80GHz
Group 50GHz
Group 40GHz
Group 30GHz
* source from GTI 2.0
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Massive MIMO: Incredible 5x Capacity for Urban Hotspot
Resource shared between users
Traditional 4G
Shared broadcast beam for all users
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Massive MIMO: Incredible 5x Capacity for Urban Hotspot
• Squares • Stadiums… CBD skyscrapers • Dense residential
• Universities • Stations • Shopping malls
Multiple user reuse same resource
4.5G Massive MIMO
5x Capacity
4G Compatible
5G Evolution Massive MIMO
User-specific beam for each user
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Time Elastic
TDD Beamforming + CloudRAN
Enable Elastic UCN (User Centric Network)
BS Centric Network User Centric Network
User follow cells Cells follow user
based on TDD beamforming
Geographical Elastic
• Dynamic user sensing & nodes selection
• Resource sharing & coordination
• Mutual help for single node breakdown
Spatial multiplex
for best capacity
Joint transmission
for best signal
Idle Busy
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TDD can Support 30% High-Speed IoT Market
2B
(70％)
0.8B
(25％)
0.2B
(5%)
Logistics
Advertisements
Wearables…
Video Monitoring
Artificial Intelligence…
eMTC
Monitoring & Control
• Bandwidth > 1Mbps
• High responsiveness
• 50kbps ~ 1Mbps
• Voice
• Low speed videos
• Medium responsiveness
Vehicle Controlling
Smart metering
Data collecting
…
NB-IoT • < 50kbps
• Low ARPU, Massive connections
• Deep coverage required
• Cost sensitiveness
NB-IOT: Not Applicable for TDD
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SUMMARY: TDD Advantages Pave the Way to the Future
Experience @
High Freq Band
Architecture:
CloudRAN
New Air Interface
Smooth 5G Evolution
4.5G (TDD+) Prepared
Benefit from D-MIMO with
CloudRAN
3.5GHz is the most popular
candidate 5G band @ sub-6GHz
Key Technologies:
Massive MIMO
Benefit existing TDD UEs
Hardware evolve to 5G
Vertical Markets
Start incumbent new
ecosystem
11
5G
2015
2020
4.5G MBB 2020 2009
LTE-Advanced Pro
2012
4G
R8 R10 R13
5G Tech into 4G
4.5G the Step to MBB2020
Reuse Infrastructure
Fostering Service & Eco-Sys
• 1Gbps
• 10ms
• 100K connections
• 100Mbps
• ~30+ms
• 10K connections
• 10Gbps
• 10ms
• 1000K connections
Thank you Copyright©2016 Huawei Technologies Co., Ltd. All Rights Reserved.
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