tdmaovergsm

7/29/2019 TDMAoverGSM

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EDGE Update

March 2003

Mike Bamburak

VP, Technology Strategy & Architecture


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AT&T Wireless Confidential and Proprietary Use Pursuant to Company Instructions

Contents

GSM vs. TDMA

EDGE vs. GPRS

GSM Platform Revenues

EDGE Test Progress


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GSM Coverage

GSM same frequency overlay on TDMA No coverage issues because GSM has a 2 dB link budget

advantage over TDMA

GSM 1900 overlay on TDMA 850 1900 suffers a 10 dB propagation penalty over 850 Coverage issues addressed by:

o 2 dB GSM link budget advantage

o 3 dB higher gain / same size antennas

o 3-5 dB coverage enhancement techniques (tower top amps, air combining, etc.)

o Selectively add new cells, or

o Selectively install GSM 850 base stations and use GSM 850/1900 terminals

Limited area GSM roll-out GAIT terminals and Mobile Gateway


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GSM Capacity

3G Americas White Paper July 18, 2002Voice Capacity Enhancements for GSM Evolution to UMTSFigures 6 & 7: Comparison of analog, TDMA, GSM, 1xRTT and UMTS (in 10 MHz)


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GSM Infrastructure Cost

TDMA Capex per Incr. MOUTDMA Capex per Incr. MOU Baseline

Cost ImprovementCost Improvement

GSM Capex per Incr. MOUGSM Capex per Incr. MOU Lower $s

Immediate18% Benefit

Significant capital cost improvement betweentechnologies to manufacture MOUs

x

Based on same volume of minutesx Efficiency continues to improve with technology advancement


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GSM Terminal Costs

GSM 850/1900 vs. TDMA 850/1900 15-20% less cost! GSM terminals also include additional functionality:

o GPRS, polyphonic ring tones, Java, etc.

GSM 850/1900 vs. GSM 1900 Same Cost! AWS vendors have migrated to a dual or tri-band strategy

o The original $10 - $20 cost difference has been eliminated

GSM 850/1900 terminal availability AWS was already selling 3 models by the end of 2002


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AWS GSM/GPRS Deployment

MarketsLaunched67

LaunchedOn Budget

Rogers AT&T Wireless Top Markets:Montreal, Toronto, Vancouver, Edmonton, Calgary

* Roam Only* Roam Only

Manc hes ter/C onc ord

Miami/F t. L aud erdaleMinneapo lis /S t. P aul

New Hav en/Wa terbury, C T

New York

Oklaho ma C ity

O m ah a

Orlando

PhiladelphiaPh o en ix

Pittsburgh

Portland

Providence

R aleigh/D urham

Sacramento

S alt L ake C ityS an Antonio

S an Dieg o

S F O /O aklan d/S an J o s e

S cr an t o n

S eattle/Ta c oma

Shreveport

S p o k a n eS pringfield, MA

S pringfield, MO

S t. Louis

Stockton

T amp a/S t. P eters burg

Toledo

T u c s o n

T u l s a

W.P alm B eac h

W as hington D C

Wichita

W orchester

*B uffalo

*Rochester

*S aginaw

*S an J u an, P R

Albuquerque

AllentownAtlanta

Austin

Bakersfield

B altimore

B o s t o n

C h arlotte

C hicag oC leve land/Akro n

C olumbus

Dallas/Ft. Worth

Denver

Detroit

E l P a s o

Fres n oF t. Myers

Grand R apids

Greensboro/Winston-Salem

Harrisburg

Hartford

Honolulu

HoustonIndianapolis

Jacksonville

K ans as C ity

L a s V e g as

Los Angeles

SitesInstalled14,900+

GSM/GPRS market launch ahead of schedule and on budget


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EDGE vs. GPRS

BTS PCU

SGSN GGSNMS

Internet

GPRSGPRS Protocol

EDGE

radio

MSEDGE EDGE Protocol

No changes

SGSN GGSN

note: EDGE also uses existing GSM/GPRS spectrum and frequency plan


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EDGE Coverage

EDGE protocols, i.e. Link Adaptationand Incremental Redundancy, andvendor proprietary techniques increase

data coverage area

EDGE

GPRS

3 dB

application coverage comparison ina typical urban C/I limited system

10kbp

s/TS

10kbp

s/TS

~ 3dB


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EDGE Data Rates ~ 3 times GPRS

Distance

to BTS

Data rate (kbps)

GSM Cell Radius

MCS9

MCS8

MCS7

MCS5

MCS6

CS1 CS2 CS3MCS2

EGPRS MCS

GPRS CS

CS4


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Freed up capacity!EDGE Transceiver

Standard GSM/GPRS Transceiver

voice voice voice voice voice

voice voice voice voice voiceFree

TS

Free

TSdata

EDGE Capacity ~ 3 times GPRS

data data data


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EDGE Infrastructure Cost

AWS EDGE UpgradeAWS EDGE Upgrade CapexCapex

AWS GSM/GPRSAWS GSM/GPRS CapexCapex

EDGE IncrementalEDGE Incremental CapexCapex

$15/pop

$1-2/pop

~10%

AWS GSM capital specific to EDGE is marginal


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EDGE Terminal Costs

EDGE Terminal Impact Linear Power Amplifier for 8-PSK Modulation Greater Signal Processing

o More complex 8-PSK equalization/demodulation

o New Protocols, e.g. Incremental Redundancy, etc.

o Higher data rates

A Leading Terminal Vendor estimates that EDGE adds ~10% to terminal engine (diminishing with time) and < 10% to terminal product cost (engine cost does not include

color display, camera, etc.


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Integrated Corp. Contracts

Enterprise Data

Voice

IntegratedSolutions

1997 1999 2000 2001 2002 2003 20041998

NetworkTDMACDPD

GSMGPRS EDGE UMTS

AdvancedWireless Data

Electronic Care,

Provisioning, Reporting

Digital One Rate

Early Data

Solutions

Global Capabilities


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At the Forefront of the Enterprise Market

A dedicated business solutions team to orchestrate the Enterprise value chain

Software

Distribution Integration

Orchestrate


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Broad Range of Enterprise Devices

Enhanced Data Phones

Specialty Devices

Integrated PDAs

Notebook, Tablet PC

Expanding Device Capabilities

! Integrated voice / data devices

! Java, Bluetooth, EDGE, WiFi

! Multiple browser support

! SMS client support on all devices! E2E security


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Connecting subscribers to the people and information they care about most

Leader in Consumer Data

Messaging

SMS IM

Email

Location basedservices

MMS - MultimediaMessaging

mMode

Connect Manage

Entertain


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mMode Performance - December 2002 Snapshot

All of GSM subsdata enabled

mMode ARPU over $8.00

Over one-thirdof GSM subscribers

bought mMode

Additional 25%used data


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EDGE Concept and Performance

! EDGE adapts the radio modulation to the radio conditions

! Higher speeds under good conditions, slower under adverse

! As a result, EDGE is the most spectrally efficient technology

below 100Kbps

0

50

100

150

200

250

300

350

400

0 32 64 96 128 160 192 224 256

Ave rage Throughput (Kbps )

Sp

ectralEfficiency(Kbps/MHz

/sector)

W C DM A (10 M Hz)

cdma2000 1X (10 MHz)

E G P R S ( 10 M H z w B C C H )

EG P RS (1.25 M Hz w/o B C CH)

0

10

20

30

40

50

60

0 10 20 30

C /I [dB]

Thro

ughputperTSL[kb/s]

Typ icalurban m acro cellC/ I distribution

35%15% 15%35%

E G P R S

d ata

b o os t

75%

75%

75%

25%

25%

25%

EDGE

GPRS CS 1-4

GPRS CS 1-2


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Field Configuration

" EDGE Infrastructure: Nortel Core, Ericsson RAN

" EDGE Terminals: Nokia, Motorola

" BSC: 2

" BTS: 12 Total - 850/1900 MHz

BYB 501:212-30, IOG-20c

Nortel SGSN

GPRS 4.0 Software

Gb

R9.1 Software

Ericsson BSC

OSS

Abis

2206 - 1900MHzBTS 9.1B Software

Ericsson BTS


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0 5 10 15 20 25 30 35 400

10

20

30

40

50

60

C/I [dB]

Throughput[kbit/s]

Constant coding scheme, Tu3 no FH @ 900MHz

MCS9

MCS8

MCS7

MCS6

MCS5

MCS4

MCS3

MCS2

MCS1

IR unlimited memoryno IR

Throughput Simulation with IR


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EDGE Throughput AWS Lab and Field

Updated 1/31/03

20.4 kbpsMCS2

25.3 kbpsMCS3

31.6 kbpsMCS4

43.0 kbps39.52 kbpsMCS5

57.2 kbps52.24 kbpsMSC6

86.5 kbps82.0 kbpsMCS7105.0 kbps100.0 kbpsMCS8

114.2 kbps112.0 kbpsMCS9

FIELDLAB

Average throughput (DL)- 2 Timeslots- Avg RSSI =~50dBm

File Size = 500kBNo link Quality Control

(i.e. no LA or IR)Channel Throughput (On ABIS)

via Nethawk


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LA/IR Throughput AWS Lab

Application: FTP Downloads, Avg File Size: 500k

Ericsson RAN with Nokia 6200U Mobile

2 Time Slots / Maximum MCS = 8 / TU3 and TU50 Fading / No Hopping

Application Throughput as connected to the OSS server

0

1 0

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

1 0 0

5 7 9 1 1 1 3 1 5 1 7 1 9 2 1 2 3 2 5

C /I (dB )

T

h

ro

u

g

h

p

u

t

(kb

LA + IR , N O fading LA + IR , TU50 LA + IR , TU3

Updated 2/6/03


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LA/IR Throughput Field Trial

Application: FTP Download / 500Kb files

Test Cluster: On a given sector face: 3 test Points chosen.

High: At site: ~25dB Med: mile from site ~15dB Low: 1 mile away ~10dB

0

10

20

30

40

50

60

70

80

90

100

L M H

C /I in H -M -L S teps

T

h

ro

u

gh

p

u

t

(k

C itt d t EDGE D l t


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Committed to EDGE Deployment

EDGE targeted to be fully deployed by mid-2003

Currently deploying all new

sites with EDGE technology

Currently deploying all newsites with EDGE technology

79% of our markets fully equippedwith EDGE radios by the

end of 2002, excluding Telecorp.

79% of our markets fully equippedwith EDGE radios by the

end of 2002, excluding Telecorp.

K T k A


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Key Take Aways

GSM platform is lowest cost service platform GSM 850 is here GSM platform enables international roaming and

associated revenue stream GPRS enables packet data and associated revenuestream

EDGE provides higher performance and lower costs

EDGE on track on all fronts from testing throughdeployment

welcome to mlife.

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