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

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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

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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

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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

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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

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connections

RBS 2204 RBS 2964/2111 RBS 6000

NSN BTS Family

PAST PRESENT FUTURE

Ultra BTS FLEXI BTS MULTI RADIO FLEXI

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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

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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.

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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

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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

$

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Annual Saving $ 438