
Climate
Change 2~2.5 %

15% by 2020 ...and grow to 40% by 2050
Source: GeSi & EC. Europa

Green of ICT Green by ICT
ICT is part of the problem
ICT is a necessary part of the solution

Green of ICT (2%)
845 million TCO
2 reduction effect
Green by ICT (98%)
4.89 billion TCO
2 reduction effect o o o
‘Green of ICT’ influences only
2% of global CO2 emission, while ‘ Green by ICT ’ covers the other 98%
‘Green of ICT’ can reduce 845 million TCO2 worldwide, while
‘Green by ICT’ can lead to
4.89billion TCO2 reduction globally
’Green by ICT ’ is approximately
5 times more effective than
‘Green of ICT’ in terms of CO2 reduction
Global CO
2
Source : Gartner 2007

* Ref: ITU-T FG on ICT&CC Deliverable 3 “Methodology”

Energy consumption trends of Network (ref. Internet)
 Internet traffic is increasing exponentially
 New network services: Tele-working, High Definition Video etc
 Network power consumption will increase by 13 times (from 2006 → 2025), although ICT average will increase by 5 times
Energy saving in Network should be a important issue
* Ref: FGFN-C25 “Energy Saving Network Technologies”, Fujitsu Ltd, 11. 2009

Examples of energy saving points in Network Operation
Energy saving by GPON
GPON Energy and Cost efficiency
1400
1200
1000
800
600
400
200
0
80 % Energy
& Cost savings
By replacing
ADSL2+
With PON *)
ADSL2+
Energy Consumption (MWh/y)
PON FTTH
Cost (k€/Y)
*) Costs for air conditioning are not considered
* Ref: ITU-T FG on ICT&CC Deliverable 4 “Direct and
Indirect Impact of ITU-T Standards”
Energy saving points of Router
Energy consumption of one router:
7.1 kW x 24 hours x 365 days =
62,600kWh
* Ref: FGFN-C25 “Energy Saving Network
Technologies”, Fujitsu Ltd, 11. 2009

o
• Network convergence involves a migration
from multiple separate networks to a unique IP based network and requires a centralization of applications and services control
• the evolution to a unified network could allow telecom operators to share network equipment and management functions

o
• Dissemination of smart terminals that are less energy and material intensive.
• Reducing manufacturing complexity and electronic waste: cables, installation space, etc
• Offering the possibility to share central, powerful, up-todate computing resources in data centres
• Reducing the energy consumption of server farms.
• Increasing efficiency (eco-efficiency) by requiring fewer premises
• An NGN architecture can greatly reduces the number of centres required
• An NGN architecture can eliminate the need for a close geographic link between the switching and data centre and users

o o
Making use of Multiple Power Modes in NGNs related technology
• Full Power Mode
• Low Power Mode
• Stand by
• Hibernation
Elements in NGNs architecture where power consumption could be measured include
• Transmission systems
• Switching centres
• Data centres

Key Features of Horizontal Network configuration
* Ref: FGFN-C25 “Energy Saving Network Technologies”, Fujitsu Ltd, 11. 2009

Example from BT: NGN impact overall network operation
N
G
N
30 ~ 40%
Reduction of Sites
Resulting by
• More Broad bandwidth
• Extend Reachability
• Support Convergence
• Service vs. Transport
• Integrated Management
• Others

Energy considerations aspects of Network
 Planning aspects: for example “Over-provisioning” vs. “Plannedprovisioning” and others
 Operation aspects: for example “Always on” vs. “Stand by” and “Best effort” vs. “Managed” and others
 Service aspects: Single media vs. Multimedia, Single service vs. Binding between services or Convergence between different service environments
 System aspects: Data storages, OAM&P systems, Router, Switch,
Transmission systems, Duct operation, Emergency Power Feeding and others
 Office operation aspects: Number of Offices and people within offices,
Office operation related systems (e.g. lights, ventilation, cooling, Heating and others)
 Others
 Requirements (Operation, Planning and Functions)
 Capabilities for services and OAM&P (including QoS,
Security and Mobility etc.) impact
 Functions and features allocation into functions
 Protocols (for example to support “Stand by” mode)
 System design and specification including power feeding conditions
 others

Example of candidate trials: ECO Networking Technology
 ECO Routing
 Aggregate traffic into energysaving path
 Implement sleep mode for routers where possible
 ECO Switching
 Forward packets on timeslot basis with time scheduling
 Buffer-less forwarding without packet loss
 No routing table necessary
* ECO: Energy Cost saving Overlay
* Ref: FGFN-C25 “Energy Saving Network Technologies”,
Fujitsu Ltd, 11. 2009

Conclusion
Expansion roles of ICTs
 ICTs had mainly involved in limited industries such as Telecom, computing etc.
 But ICTs are now becoming essential parts of life
 Furthermore ICTs is being important parts of social, national and international infrastructures
Roles of ICTs in Protecting Environments
 ICTs are rather environment friend than other industrial technologies but also have contribution to environment change
 ICTs are being widely used whole processes of protecting environment
 Several ICTs technologies are used at the field of environment
Position of NGN in Protecting Environments
 NGN is a common infrastructure for enabling ICTs and other industries using ICTs
 NGN provides benefits to mitigate GHG by itself including support various capabilities for protection of environments