Hossam Salib - Positron Access - Economical 3G/4G/Metro Cells Mobile Backhaul - masterclass d2

Economical 3G/4G/Metro Cells Mobile Backhaul

Case Study Major European Carrier

2010 Positron Access Solutions - Confidential

2

Mobile Backhaul Bandwidth Needs are Increasing

Wireless Technology Evolution:

2G

Primarily voice

NxT1, up to 8 T1s = 12 Mbps

3G

Voice and data

TDM Backhaul

Driving need for fiber

10 Mbps up to 25 Mbps backhaul

LTE

Broadband

Carrier Ethernet

25 Mbps up to 100’s Mbps or more

2G

3G

LTE

0

25

50

75

100


3

Cell Site Backhaul Evolution in North America

Requirements:

EVDO / UMTS/HSDPA / LTE demand for More Bandwidth

Demand for Higher Reliability

New Lower Cost Backhaul (Ethernet)

Challenges:

Drop in revenue per bit

Value (to end users) of applications not related to data volumes

Current T1 backhaul doesn’t scale

913

22,663

30,045

51,600

65,887

81,698

104,288

127,540

139,338

162,986

175,725

183,689

0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

160,000

180,000

200,000

1985 1987 1989 1991 1993 1995 1997 1999 2001 2003 2005

Growth in U.S. Cell Sites

Source: CTIA Semi-Annual Wireless Industry Indices, December 2005 Edition

Data Dominant

Voice Dominant

Revenues

Traffic

Revenue & Traffic

De-Coupled

Time

Data Dominant

Voice Dominant

Revenues

Traffic

Revenue & Traffic

De-Coupled

Time Source: LightReading

MIMO-on-DMT – Vectoring Technology

2010 Positron Access SolutionsPositron Confidential

Wireless

CO CPE

Copper

MIMO

Tx/Rx

Wireline

• Because crosstalk is the biggest link degrader in DSL today

• Because MIMO can be effective against legacy disturbers

• Because it is a proven technology in wireless

Why Add MIMO?......Real World Copper Plant Mimics Wireless World, i.e. Multiple Disturbers

Positron Confidential5


Aktino Confidential 6

NEXT Mitigation Via Vectoring

• For longer loops, NEXT is biggest performance bottleneck today

• FDM is effective against NEXT but not against legacy disturbers

MIMO Channel

H

MIMO NEXT

Whitening

Noise

Tx Signals

Rx Signals

Alien NEXT

• MIMO processing exploits NEXT correlation across lines and can

mitigate NEXT crosstalk


Aktino Confidential 7

FEXT Mitigation Via Transmit Pre-Compensation

• For shorter loops, self-FEXT is the dominant noise source.

• Upstream FEXT can be cancelled at the DSLAM using receiver-based

MIMO.

• Downstream FEXT can be cancelled at the DSLAM using transmit

MIMO pre-compensation.

MIMO Channel

H

TX MIMO Processing

H-1

Tx Signals

Rx Signals

to modems

100’s of Mbps Ethernet on Bonded Copper to Every Cell Site


Positron Flex-stream Solution - 100Mbs+ on 8 Pairs

0

20

40

60

80

100

120

140

4331

23 1811

106112

124 128 130

CA

PA

CIT

Y

2 Km

Up Mbps Down Mbps

0

20

40

60

80

100

4031

2218

11

54

65

80 8387

CA

PA

CIT

Y

3 Km

Up Mbps Down Mbps

0

10

20

30

40

50

60

70

27

2017

10

36

5054

60

CA

PA

CIT

Y

4 Km

Up Mbps Down Mbps

9


FlexStream 100 - 50 to 100 Mbps Bandwidthwith MIMO on DMT – 8 copper Pairs

Positron Confidential10

50.9

44.5

25.0

9.5

43.2

29.8

13.4

5.1

11.2

11.0 10.0 7.1

100.0 100.0

59.4

19.3

0

10

20

30

40

50

60

70

80

90

100

1 1.2 1.5 1.8 2.1 2.4 2.7 3 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5 5.8 6

Ba

nd

wid

th [

Mb

ps

]

Loop Length [Km, 0.5mm]

Aktino Rate vs. Reach Performance

8 pair MIMO-DMT Symmetric 8 pair E.SHDSL 8 Pair MIMO-DMT upstream 8 Pair MIMO-DMT Downstream

Aktino 4X

Aktino 2X

2010 Positron Access Solutions

Microwave and Fiber for Mobile BackhaulInstallation Cost Estimates


=~ US $ 3k to 5k Link

• Availability of Spectrum

• License Costs

• Regulatory Environment

• Labor /Site Lease Costs

• Installation Costs

• Relatively high Equipment Cost

~ US $ 30 to 60,000 /Link

(*including tower setup – Antennas )

Cost Per Foot Per Mile

Rural $12 $63,360

Metro $30 $158,400

Urban $42 $221,760

MIMO on DMT – Vectoring Advantages – ROI to deliver 100’s of Mbps

12

• Right of Way issues

• Long deployment

timelines

• Re-use existing

infrastructure

• Fast deployment to meet

customer requirements

• Configurable # of pairs,

bandwidth, asymmetry

ROI a fraction of the 100Mbps alternatives

Major European Carrier Mobile Backhaul case


Broadband Mobile

20082007 2009Time

20101992 2001 2003

~10 kbit/s

~100 kbit/s

HSPA 2

HSPA 2 +~14 Mbit/s

HSPA 1

EDGE

UMTS

GSM

MOBILE

INTERNET

MOBILE

TV

eMAIL

~7 Mbit/s

~300 kbit/s

~ 3 Mbit/s

HSPA ev. ~30 Mbit/s

LTE~100 Mbit/s

MOBILE

Broadband

Mobile Broadband Technology Evolution


Used MIMO on DMT for 3G upgrades

modem

IMA

n x E1Ethernet

network

GE

RNC

Node B

SHDSL STM-1

Voice + R99

Pseudowire ATM over MPLS

FE/GEmodem

ADSL2+/VDSL2

1:n

Physical Bonding (with MIMO)

High Speed FE/GE

• Needed 50 to 100 Mbps for 3G upgrades

• Could not wait for Fiber or use Microwave for Many sites

• No impact on ADSL IP TV network

• Used MIMO on DMT Technology


16

Aktino performance on copper at Tier 1 European Carrier (38% at 100Mps – 78% over 50 Mbps)

• Results of 226 Sites sample

(Down stream)

• Roughly 40% of sites are

providing 100 Mbps

• Roughly 80% of the sites are

providing over 50 mbps

• 4 to 8 Copper pairs were

used

• Reaches up to 3.5 km

100 Mbps39%

80 Mbps10%

70 Mbps10%

60 Mbps9%

50 Mbps12%

40 Mbps9%

30 Mbps5%

20 Mbps5%

10 Mbps1%


AK5NTE 8 Pair (Network Termination Equipment)

17 Positron Confidential

Metro / Micro cell challenges


19

Metro / Micro Cells – Challenges

Basic Requirements : Small size / Low power

Easy to deploy in metro areas (Pole mount)

Bandwidth 50 Mbps (vs. >100 for Macro cells)

Ability to scale in 10s to 100s of thousands

Very low equipment and deployment cost


20

Cost effective Metro / Micro Cells deployments

MIMO – Vectoring Copper Bonding for Micro cells

Up to 100’s of Mbps

Line powering

Speed of deployments

Scalable – copper available to most sites today

Fraction the cost of fiber or Microwave (1/10th )

Date post:	20-Jun-2015
Category:	Technology
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