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OFC 2015 - Ginis

Access Network Transformation Options for Gbps BroadbandGeorge Ginis (gginis@assia-inc.com)Ken Kerpez (kkerpez@assia-inc.com)

March 26th, 2015

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OFC 2015 - Ginis

Outline

Technologies for >100 Mbps Broadband

Vectored VDSLG.now/G.fast

GPON

Wi-Fi’s Role in Enabling New

Broadband Models

Mobile Off-loadingVirtual Broadband

WiFi Sharing

Network Analytics: The Invisible Revolution

Big Data for Broadband

Consumer Tools

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OFC 2015 - Ginis

0

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Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3 Q1 Q3

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Subscribers (m

illions)

xDSL Cable FTTH Others Total

Access Technology Trends

80% of FTTH growth is from China

Existing infrastructures (copper, coax) are pushed to deliver higher speeds

Mix of multiple technologies expected to deliver next-generation broadband

Source: Point Topic

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OFC 2015 - Ginis

Vectored VDSL

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OFC 2015 - Ginis

Deployment Scenarios for Vectored VDSL

DSLAM

OLT Optical Backhaul

Fiber‐To‐The‐Node (FTTN)DSLAM installed in street cabinetCopper from node to residence

Fiber‐To‐The‐Basement (FTTB)DSLAM installed in building basementCopper extensions to apartments

DSLAM

Copper Pairs

100-400 copper pairs connected to DSLAM

Copper length up to 1km

<100 copper pairs per node

Copper length of 100-400 meters

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OFC 2015 - Ginis

Vectored VDSL – Technology and Performance

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0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5

Dow

nstream Data Ra

te (M

bps)

Loop Length (km)

Profile 30b ("VDSL3")

Profile 17a

0.4 mm cable; -140 dBm/Hz background noise; average data rates

Deployment in progress

TransmissionDiscrete Multi-Tone (DMT)Frequency Division Duplexing“Showtime” adaptationCrosstalk cancellation (vectoring)

Error protectionRS coding and interleavingPHY-layer retransmission

Profile 17a4096 tones 4.3125 kHz tone-spacing

Profile 30b (proposed)8192 tones4.3125 kHz tone-spacing

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OFC 2015 - Ginis

G.now/G.fast

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OFC 2015 - Ginis

Deployment Scenarios for G.now/G.fast

DPUOLT Optical Backhaul

Fiber‐To‐The‐Distribution‐Point (FTTdp)DPU installed at distribution pointCopper drop to residence

Fiber‐To‐The‐BasementDPU installed in building basementShort copper extensions to apartments

DPU

Copper Access

< 100 copper pairs per DPU

Copper length up to 250 meters

Reverse Power Feed

<100 copper pairs per unit

Copper length of 50-250 meters

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OFC 2015 - Ginis

G.now – Technology and Performance

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Dow

nstream Data Ra

te (M

bps)

Loop Length (m)

1 line 8 lines 16 linesDeployment started in late 2014

Based on G.hn standard

TransmissionDiscrete Multi-Tone (DMT)Time Division DuplexingFast adaptation

Error protectionLDPC codingPHY-layer retransmission

Current systems2048 tones48.828125 kHz tone spacing100 MHz total bandwidth

0.4 mm cable; DS/US split ratio 80:20; actual rates from field

Source: Marvell

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OFC 2015 - Ginis

G.fast Technology and Performance

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1 2 3 4 5 6 7 8 9 10

Upstream+D

ownstream

Data Ra

te (M

bps)

Line Number

50m 100m 150m 200m

Longer loops

Deployment expected in 2016

TransmissionDiscrete Multi-Tone (DMT)Time Division DuplexingFast Rate AdaptationCrosstalk cancellation (vectoring)Discontinuous operation

Error protectionRS coding and block interleavingPHY-layer retransmission

Current standard2048 tones51.75 kHz tone-spacing106 MHz total bandwidth

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OFC 2015 - Ginis

G.fast Technology and Performance – Future

Standardization started in 2015

New profile (proposed)4096 tones51.75 kHz tone-spacing212 MHz total bandwidth

Crosstalk cancellationChannel with very strong crosstalkLinear and non-linear precoding under study

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Data Ra

te (M

bps)

Line Number

50m, 212 MHz, GDFE 50m, 212 MHz, Linear100m, 106 MHz, Linear 200m, 106 MHz, Linear

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OFC 2015 - Ginis

GPON

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OFC 2015 - Ginis

Deployment Scenarios for GPON

OLT Distribution‐Drop

Fiber‐To‐The‐Home/Premises (FTTH/P)Passive components in outside plantFiber drop to residence

Fiber‐To‐The‐BasementDSLAM installed in building basementShort copper extensions to apartments

DSLAM

Splitting ratios 1:16, 1:32, 1:64

Typical two-level splitting

<50 copper pairs per unit

Copper length of 50-250 meters

FeederSplitter

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OFC 2015 - Ginis

GPON Technology and Performance

Feeder Distribution Drop

OLT

2.488 Gbps down at 1490 nm

1.244 Gbps up at 1310 nm

Long range of 10 km to 20 km

TDMA 1 ms slots (typical)OLT assigns time-slots in real-time

Dynamic Bandwidth Allocation for upstream time-slot assignment

Splitter

Splitter

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OFC 2015 - Ginis

Wi-Fi

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OFC 2015 - Ginis

Wi-Fi and Mobile

Cellular Base‐station

Fixed Broadband Connection

WiFi Access Point

Mobile Off-loading

Enabled by: Public hotspots Sharing of private WiFi with dual SSID

Achieves:Reduced traffic on cellular networkWiFi-only mobile

Broadband Boost (Virtual Broadband)

Enabled by: Gateways/devices with fixed and cellular interfacesNetwork-side aggregation servers

Achieves:Broadband speed and quality enhancement

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OFC 2015 - Ginis

Wi-Fi for Bandwidth Sharing

Fixed Broadband Connection

WiFi Access Point

Fixed Broadband Connection

WiFi Access Point

Consumer-side Bandwidth Aggregation

Enabled by:Gateways/devices with multiple WiFi interfacesNetwork-side aggregation serversIP-layer bonding

Achieves: Broadband speed and quality enhancement with no additional infrastructure spending

Example: Three living units in dense environment Each unit uses 100 Mbps Vectored VDSL linkEach device has access to a peak rate of 300 MbpsIndividual services mapped into appropriate QoS levels as provided by the different links

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OFC 2015 - Ginis

Network Analytics

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OFC 2015 - Ginis

Network Intelligence for the Service Provider

MarketingCustomer Support

Field ForceNetwork

Operations

OLT Gateways and Devices

APIs to Service Provider

Interfaces to the network

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OFC 2015 - Ginis

Network Functions

Access

OptimizationAutomatic tuning for maximum performance

DiagnosticsFault type/time/location identification

Service RecommendationsAccurate and per-line service qualification

Contact Center RecommendationsReal-time analysis for determining best action

Field Technician GuidanceReal-time fault reporting and fix verification

Outside Plant Maintenance RecommendationsLoop plant analysis for detection of deterioration

Home Network / WiFi

OptimizationPeriodic WiFi tuning for maximum performance

DiagnosticsPerformance, coverage, congestion and traffic

RecommendationsActions recommended to consumer

User FeedbackConsumer reporting of perceived link quality

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OFC 2015 - Ginis

Information and Control for the Consumer

OLT Gateways and Devices

Consumer interface

Interfaces to the home network

OTT Service Provider

Interfaces to OTT systems

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OFC 2015 - Ginis

Consumer Self-Help

Speed TestWith break-down per segmentSelection of content serverAbility to provide feedback

WiFi AP Location GuidanceSmartphone-based

Full Network ViewInformation on each devicePerformance of each deviceDevice prioritizationList of recommended actions

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OFC 2015 - Ginis

Conclusions

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OFC 2015 - Ginis

Conclusions

Multiple Technologies for

>100 Mbps Broadband

Most suitable technology depends

on the existing infrastructure and the service needs

Wi-Fi Enables New Broadband Models Bringing Together Fixed and Mobile

Wi-Fi-based models for broadband reduce

the need for new infrastructure

spending

Network Analytics are Revolutionizingthe Service Provider

Operations

Optimization, recommendations and consumer self-help are essential

capabilities

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OFC 2015 - Ginis

Thank you