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Energy Efficiency In BTS sitesEnergy Efficiency In BTS sites
Randeep Sekhon
Bharti Airtel Ltd
India
Agenda
• Why Energy Opex is important to a Telecom Operator ?
A f E ffi i• Aspects of Energy efficiency
• Telecom Equipment energy efficiency
• Green Shelter
Mobile Services
Typical Indian OpCo Opex Chart
License, Spectrum & Cost per Minute Breakup
WPC charges23%
Others26%
Others16%
NW EnergyExpenses
19%
26%Network
45%
Sales & Marketing Expenses
16%
Energy expense comprises of 19% of cost per minuteAnnual Energy Bill of Bharti ~ $500 Mn
Mobile Services
Energy Efficiency in Telecom Operations
• Green Shelter• Outdoor BTS • Higher Operating
Temperature
• Solar• Wind• Bio Diesel Temperature
• Battery usage• Infra Sharing
• Fuel Cells
Green E InfraEnergy Infra
Telecom Equipment
Energy Effi i
Excess Capacity Shut Off
• MCPA• Road map• RAN Sharing
• TRX Shut down• Transmit Power• LVLD
EfficiencyShut Off
Mobile Services
g• Swap Old BTS
Typical BTS Power Consumption vs Traffic Trend
1 400
1,500
1,600
50
60Carried Erlang Power Consumption
DE
1,200
1,300
1,400
40
D
900
1,000
1,100
20
30 A
700
800
900
10
B
C
600 0
17:0
0
20:0
0
23:0
0
2:00
5:00
8:00
11:0
0
14:0
0
17:0
0
20:0
0
23:0
0
2:00
5:00
8:00
11:0
0
14:0
0
17:0
0
20:0
0
23:0
0
2:00
5:00
8:00
11:0
0
14:0
0
17:0
0
20:0
0
23:0
0
2:00
5:00
A – Idle Load B – Minimum Load with 2TRXs locked/halted per sector
Mobile Services
per sector C – Minimum Load when 2TRXs per sector removed physically D – Typical Peak load with power control enabledE – Typical Peak load with power control feature disabled
Ericsson BTS Family
PAST PRESENT FUTURE
Power distribution unit
Transmission connectionsGPS connectionO&M and control
ti
Connectors for RRU
Mobile Services
connections
RBS 2204 RBS 2964/2111 RBS 6000
NSN BTS Family
PAST PRESENT FUTURE
Ultra BTS FLEXI BTS MULTI RADIO FLEXI
Mobile Services
Ultra BTS FLEXI BTS MULTI RADIO FLEXI
Huawei BTS Family
D D D DMLC
Power andEMC
ELC
EL
SA
DDPU
DCOM
DCOM
DDPU
DCOM
C EMC
DDPU
C LC
AC
Wiring
DTRU
DTRU
DTRU
DTRU
DTRU
DTRUU U U UUU
WiringFAN
Air Inlet
DTM
DTM
DEM
DC
DCD
A
Wiring & Air InletTransmission UnitTransmission Unit
MU
MU
MU
CUS
UT
U
RBS 3012 DBS 3900
Mobile Services
RBS 3012 DBS 3900
Power Consumption trend…
Power Consumption (Watts)Power Consumption (Watts)
10% to 30% Further Further10% to 30%reduction 40% to 50%
reduction 30% to 35%reduction
Further40% to 50%reduction
RBS RBS RBS RBS RBS tra
ner
tra
sco
exi
ulti
AN
2204 2104 2964 2111 6000 Ult
Shin
Ult
Fres Fl
e
Mu
RA
ERICSSON Nokia Siemens NetworksERICSSON Nokia Siemens Networks
Up to 50% reduction seen in BTS power consumption using MCPA and Excess capacity shutoff.
Mobile Services
Excess capacity shutoff.
Telecom equipment energy efficiency
• Use new energy efficient Base Stations
S i h ff i h d d• Switch off excess capacity when not needed
• Use Optimal power in BCCH
• Use Tower mount BTS in Off grid sites- Lower power consumption of Tower Top BTS makes it feasible case for Green Mobile installations
• Use Outdoor BTS
• RAN Sharing
• Increase operating temperature to up to 35deg
Mobile Services
Impact on 200 Watt Average Power Reduction
200 Watt reduction per BTS in average power will lead to 4.8 KWH savings per day.
Translated into a Annual saving for a company with 10000 BTS
For large operators with 100K BTS
The savings translate into 43Mn USD annually
Saving is there for all large and small mobile operators for any incremental saving in BTS average Power.
Per BTS UnitEnergy Saving Watt 200Units Saved daily KWH 4.8Units Saved Annually KWH 1752Price Per Unit $ 0.25
$
Mobile Services
Annual Saving $ 438
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