Green ICT issues on Mobile Network Systems

Transcription

1 ICMU2010 Panel Presentation Green ICT issues on Mobile Network Systems Atsushi Murase, Ph.D. Managing Director Research Laboratories NTT DOCOMO 2010 NTT DOCOMO, INC. All Rights Reserved.

2 IT Energy Consumption in Japan IT energy consumption is 1% of total consumption in Japan Total IT Energy Consumption in Japan (TWh*) Mobile Networks occupy 10% of total IT Consumption Mobile Networks consume 0.1% of total energy consumption in Japan Mainframe Computers Computer Hubs Servers 50TWh Routers Business PCs Air Conditioning for Data Center Mobile Networks Fixed Network User Equipment Fixed Networks Home PCs *:TWh = 1,000,000 MWh Ref.: Report of the Study Group on ICT System and Network for Reducing Environmental Impacts, March

3 NTT DOCOMO s Energy consumption Total Energy consumption of DOCOMO s NW = 2,442,434 MWh 5% of 50 TWh (i.e. Total IT Energy Consumption in Japan) as of TWh 53M DOCOMO s users 365 days 126 Wh/day/person as of

4 Power Consumption in Mobile Network Systems 1k Servers / 2 PB storage Service Nodes Core Network Full IP routers 3% 20-25% ATM IP Radio Access Network ATM RNC BTS IP-RNC IP-BTS IP Transport 43k Base Stations X 5 kwh IP enodeb IP 4G NodeB 75-80% WCDMA (HSDPA) Terminals 3G-LTE 53 million users X 0.83 Wh 4 4G 0.7%

5 Number of Radio Base stations Total Power Consumption of docomo s Network TMWh = 1,000,000MWh Number of Base stations x ,278,853 2,435,793 2,442,434 MWh ,717,560 1,882,978 2,041, ,560, = (48M users) (52M users) 10 (53M users) =

6 Example of power consumption improvement Distributed base station architecture No power loss at RF coaxial cable Air-cooled small amplifier (no x1.7 cooling overhead) 4Ch/4Sector: 5.9Kw 4.2Kw 6

7 Air-Cooling power reduction in future Current PUE=1.7 s-cop=1.8 Target PUE=1.45 s-cop=3.3 Cooling IT Cooling IT IT Cooling Lighting+Misc IT Cooling Lighting+Misc Source: NTT Facilities 7

8 Green Base Station DOCOMO s ECO Tower Independent Base Station using Solar Power Generation FOMA BS ANTs 48x2 solar panels 8

9 Green Solutions by Cellular Systems Car Traffic Information Service based on Cellular NW data 9

10 Petamining Research Project for the Green Future Food service Retail Better society Insurance Finance Healthcare Realty Transit Minimization of industrial in-efficiency Post-harvest food loss $16B Motor vehicles w/o CDP 40% Non-occupancy taxis 38% understanding geographical population statistics estimated by cellular terminals movement Fine balance between convenience and environment Demographics Location Transaction 55 million customers in DOCOMO 10

11 Conclusion Total power consumption of docomo s NW is 2.4TWh, that is 5% of Total IT Energy Consumption in Japan. 126 Wh/day/docomo-user for the total NW Radio Access Networks (RAN) consume 75-80% of total electricity, while terminals consume only 0.7%. RAN Power consumption will be reduced through technologies of RoF, efficient transmission amplifier and non-fossil energy source. Green solutions are possible by utilizing the cellular network information. 11

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13 NTT DOCOMO s Power Consumption Trend In spite of increased base station numbers, DOCOMO s Energy consumption is almost stable Network Office Others CO 2 (x 10 million kg) 968,000,000 kg Converted CO 2 emissions for power consumption of DOCOMO s NW (Conversion Ratio = kg to CO 2 /kwh) 13