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Challenges and Opportunities in
Cloud-Era Optical Networking Xiang Liu
Huawei Technologies
ON2020 Workshop at OFC’17
Acknowledgement:
Collaboration with many colleagues in Huawei
2
Challenge 1: Data Explosion Driven by DC & Video
West East
North
South
Traffic from users:0.93.6
DCI Traffic:0.362.25
1, Video as a dominant
service, CAGR 22%
2, 7 Billion People to People
connections & 1,500 Billion
Thing to Thing connections
DC Interconnection
Port # within DCI
increasing 50% per year X
4
by 2
021
X 6 by 2021
From OVUM
ZB(1021)/year
ON2020 Workshop at OFC’17
3
Challenge 2: Faster & Faster Networking!
DC Disaster Recovery
≤1ms
intra-city disaster recovery
< 1ms UHD Video
online video 20ms
Desktop Cloud
~30ms
Finance/Trading
HFT ~ 1ms
• Low latency brings better service experience for UHD video and Cloud App
• Low latency guarantees the reliability of disaster recovery
• Financial companies pay extra money for 1ms latency advantage
ON2020 Workshop at OFC’17
4
For operator, 12%~13% TCO on equipment, but 30%
TCO on OPEX
CAPEX OPEX VS
20~50 equipment/person
by Operators
Challenge 3: High OPEX & High Power Consumption
NMS
Planner
Commissioning Toolkit
Monitor Designer
2G
DSLAM
Leased Line FTTH
3G LTE
Leased Line
SDH/MSTP IP MW
OTN
High OPEX 10,000 servers/person
by Google
SDH
W/bits
WDM/OTN
72%
Power
Consumption
(10KW+)
Bandwidth
(30T+/Rack)
For operators, power consumption is increasing rapidly
along with the growing bandwidth requirement and the
aging of legacy SDH networks
TDM MW
WDM
Isolated & Closed System
ON2020 Workshop at OFC’17
5
Low Cost &
Low Power
Simplified &
Optimized Cloud
Computing
Flexible &
Open
T-SDN
Metro Core-OTN
100G/
Super100G
Ultra-Broadband
Access Ultrahigh-Speed
Core
Ultrahigh-Capacity
Metro
Access, Enterprise,
Data Centers
Microwave
Edge Cloud Access Cloud Center Cloud
Enterprise
Home
Mobile
Challenge 4: Easy & Optimal Management via T-SDN
ON2020 Workshop at OFC’17
6
2016 2017 2019 2018
320T-640T OXC
96 λ @ C
Cluster OTN
600G Single λ
TSDN BoD TSDN OVPN
C+L
Coherent CFP2
AI/Big Data TSDN Slicing
Blade OTN 100G ULH CFP
ULH 200G LH 200G
Opportunities for Innovations at All Layers
ON2020 Workshop at OFC’17
7
Electrical Layer (1): Higher Throughput, Lower Cost/bit
<80km 600km 2000km 3000km
Ultra-Long
Backbone
Backbone
Short
Reach
DCI
QPSK/8T
QPSK/8T
100G
200G
400G
600G
8QAM/12T 16QAM/16T
16QAM 25T
Metro
64QAM 38T
300km
100G 3000km
200G 2000km
ON2020 Workshop at OFC’17
8
Electrical Layer (2): Smaller & Greener!
2 ports per card
60W each
100G~600G Flex
4 ports per card
32W each
MSA-like Reach
8 ports per card
20W each
Integration-enabled
100G/200G MSA 100G/200G CFP 100G/200G CFP2-DCO
oDSP 28nm16nm7nm
Power reduction
Silicon Photonics Component density per cm2
1 10100
ON2020 Workshop at OFC’17
9
Optical Layer: Higher Capacity, Smarter, and More Flexible
OA OA
OTU
OXC
OTU MU
X/D
EM
UX
MU
X/D
EM
UX
C-Band C-Band
32nm
… …
40nm
96 λ@C band OXC
320T OXC One Slot
One Board
One Direction
• Next phase:
C+L Bandwidth
increase by 100%
• Extended C:
Bandwidth increase
by 20%
• 320~640 Tbits Centralized
Switch
• 32 Directions
• “0” Latency Switching
• 90% Space & Fiber Saving
• Low Power Consumption
ON2020 Workshop at OFC’17
10
Transport SDN: Supporting Cloud C&M
OSS/BSS 3rd Party APPs Step 1:
Agile Service
xx Weeks to xx Mins
VIP
Step 2:
Resource Pooling IP MW
SDH/MSTP OTN
TDM MW
WDM
Step 3:
OAM Automation L0/L1 Survivability Analysis
Unified Portal UI
Network Cloud Engine
Configuration Management
Resource Management
Path Control
Data Analysis
Plan View Control Analysis
Survivability Improvement
OAM Automation
ON2020 Workshop at OFC’17
11
Flex Grid
…
50GHz 150GHz-200GHz
Wavelength
10
0G
1T
40
0G
75GHz-87.5GHz
20
0G
50GHz
10G
12.5GHz Fragment 12.5GHz Fragment Planning
Multi-rate/spectrum hybrid
Minimize fragment Minimize wave plane
Provisioning
Wavelength continuity Less Fragment Real-time provisioning
Optimization
Interrupt traffic Spectrum migration Defragmentation speed
C-Band 196.0Thz 192.1Thz
C.S.= n*50Ghz
C.S.= n*37.5Ghz Reserved
Flex-Grid Planning Algorithm
Flex-Grid Routing Algorithm
Spectrum Optimizing Algorithm
11
TSDN: Better Coordination w/ the Physical Layer
ON2020 Workshop at OFC’17
FMFB (Flexible-modulation & Flexible-Bandwidth)
Flexible-Grid Superchannel enabled
12
ON2020 Workshop at OFC’17
Orchestrator
DC Controllers
Application
Inter-Damion Mgmt Service Module Policy Mgs ……
BoD Automation OVPN / VTS ……
Southbound
Northbound
T-SDN Controller
IDC
Enterprise Metro Backbone
IDC
Enterprise
API
Transport SDN Super-Controller
1st Domain SDN Controller
3rd Domain SDN Controller
NBI NBI
TIP: Transport Service IDE
T-API
Open NBI
2nd Domain SDN Controller
NBI
Vender A Vendor B Vendor C
12
TSDN: Open & Multi-Vendor “Network-on-Demand”
13
Facing the Challenges &
Opportunities brought by
DCI, Video,VR, 5G, IOT…
our Optical Networking
community can work
together to continuously
innovate and contribute to
our society in the Cloud Era
towards 2020 and beyond!
ON2020 Workshop at OFC’17
Copyright©2016 Huawei Technologies Co., Ltd. All Rights Reserved.
The information in this document may contain predictive statements including, without
limitation, statements regarding the future financial and operating results, future product
portfolio, new technology, etc. There are a number of factors that could cause actual
results and developments to differ materially from those expressed or implied in the
predictive statements. Therefore, such information is provided for reference purpose
only and constitutes neither an offer nor an acceptance. Huawei may change the
information at any time without notice.
Thank You.