G.Hn - A Breakthrough Technology for MDU Access - Paul Arola Senior Design Specialist - Broadband Forum
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G.Hn – A Breakthrough Technology for MDU Access Paul Arola Senior Design Specialist
G.hn – A Breakthrough Technology for
GiGAWire MDU Access
Update on Operator Deployments
2
GiGAWire Overview
GiGA Wire Alliance 2019 3
Physical Architecture
GiGA Wire Alliance 2019 4
MDU Topology
GiGA Wire Alliance 2019 5
SFU Topology
GiGA Wire Alliance 2019 6
GiGAWire Solutions
GiGA Wire Alliance 2019 7
GiGAWire Vectorboost
GiGA Wire Alliance 2019 8
GiGAWire Vectorboost
GiGAWire handles different levels of crosstalk at different frequencies
• FEXT mitigation by reducing
crosstalk source
– Enable boosting mode
to expand frequency
band for heavy traffic
ports
– Crosstalk avoidance
technology
• Simple and cost-effective
implementation
• Reduced installation times
• MDU-oriented solutions
(hundreds of users) making
vectoring not viable
GiGA Wire Alliance 2019 9
G.hn Standards Update
(Wave-3)
G.hn Data rate
ITU G.9960 Amd X
10 Gbps Full-Duplex
(Wave-2)
Target Applications:
ITU G.9960 Amd 2 • VR in-home video distribution
• 802.11ad/ax Wi-Fi extenders
2 Gbps Half-Duplex • 10G MDU broadband
(Wave-1) Target Applications:
• 4K/8K in-home video
ITU G.9960 distribution
• 802.11ac Wave-2 Wi-Fi
1 Gbps Half-Duplex extenders
• 2G MDU broadband
Target Application:
• HD/4K in-home video
distribution
• 802.11ac Wave-1 Wi-Fi Standards Standards
extenders
• 1G MDU broadband released by ITU-T in development by ITU-T
G.hn standard life cycle
GiGA Wire Alliance 2019 10G.hn Standards Update
G.hn
SISO
July 2019: Consent of
Proof of 100MHz
Management Technical paper amendment for high
concept (G.9960/
(G.9962) speed G.hn over
G.9961) on the use of
coax/phone
G.hn for access
G.hn
foundation G.hn
paper GiGAWire
Dealing with
MIMO system xDSL Start working
interferences (G.9963) interferences of an
from other lines July 2019: Expected
(G.9977) amendment approval
for high speed
G.hn over
coax/phone
Main characteristics:
• Extended spectrum (> 1GHz for coax, 400 MHz for phoneline)
• Extended PHY rates (targets: 10Gbps for coax, 5 Gbps for phoneline)
• RF Capabilities
• Hooks for FDX transmission
• 14 bpc
• Reduced PHY overhead
• Optimization of complexity: Multi Level Coding
• Optimized retransmission
GiGA Wire Alliance 2019 11Operator Deployment Update
GiGA Wire Alliance 2019 12TELUS G.hn update …
• µDPU (fiber extender)
– 2 * 2.5G SFP cages, Marvell Armada 3720 SoC
– Integrated reverse powering
– Mainline Linux 4.19.x LTS and Linux 5.x
– Mainline OpenWRT
– XDP (eXpress Data Path) support in Linux 5.4
– No proprietary vendor SDK
– Operating temp range of -40c to 65c
• G.hn SISO SFP
– ~1.3Gbps aggregate on 100m of CAT3, up to
1.5Gbps on shorter loops
– 1000BaseX or 2500BaseX host interface
– 1.9W power dissipation
GiGA Wire Alliance 2019 13TELUS G.hn update …
• Two field trials completed, currently in employee market trial
• Low cost enclosure designed to hold 12 µDPU’s
• All subscribers get aggregate rates > 1.3G, and > 900Mbps symmetric on
speedtest.net
GiGA Wire Alliance 2019 14TELUS G.hn update …
• G.hn MIMO SFP
– G.hn SISO (1 * 200MHz) or G.hn MIMO (2 * 100MHz) supported on two pairs
– Two sided 2x2 MIMO beamforming
– 1Gbps aggregate at 1000ft on two pairs of CAD55 cable
– 3W power dissipation in MIMO mode, 1.9W in SISO mode
– Runs cooler than the G.hn SISO SFP module in µDPU, but may be
problematic in other network devices not engineered for 3W SFP modules.
• Currently in lab testing
GiGA Wire Alliance 2019 15TELUS G.hn update …
• 12 or 24 subscriber ports
– G.hn SISO or MIMO on twisted pair, or
coax
• 2 * 10G SFP+ uplinks
– Walled garden redirection
– MEF 2.0 compliant
– HW based Y.1731
• Telco grade GAM (G.hn access
multiplexer)
– North American safety standards
• Vectorboost locally on GAM, or in
the cloud
• Currently in lab testing
GiGA Wire Alliance 2019 16TELUS G.hn update …
• µDPU API is used to manage µDPU’s,
due to scalability issues with Netconf
PMA’s
– ‘Hyperscale’ NoSQL backend
– REST-JSON NBI and SBI
• Provides orchestration to steer µDPU
or GAM’s to Vectorboost instances
running in the cloud
• Supports arbitrary DPU topologies
– Any combination of multiport GAM’s and
µDPU’s up to ~1000 ports total can run at
the same distribution point.
– GAM’s or µDPU’s can be owned by different
ISP’s and still managed in same VB instance.
– Randomly generated, unique seed index for
each subscriber in Vectorboost instance.
• Code will be on Github in 2020
– https://github.com/TELUS-BBA/
GiGA Wire Alliance 2019 17TELUS G.hn update …
• RPF PSE provided by LEA networks.
– RPF works extremely well in the field
– Field techs all claim it ‘just works’
• RPF can be problematic with automated cable
farms in the lab.
– Killed the RPF circuit in a µDPU when switching from
100m to 0m cable reel.
– Analysis from Methode, Telebyte and
Microsemi/Microchip indicated inductive back EMF
caused a voltage/current surge through the µDPU.
– No clear guidelines in ETSI RPF standard for this.
– Methode had to modify the surge protection to
mitigate.
GiGA Wire Alliance 2019 18Century Link G.hn update …
• ReadyLinks 4, 8, 12 and 24 port G.hn DPU’s in field testing for MDU scenarios
– 24 port G.hn DPU shown to be ~40% cheaper than equivalent G.fast DPU.
– G.hn also tested as copper backhaul to fiber fed street cabinet.
• Innovative FTTdp program that leverages G.hn SISO / MIMO over the last mile
copper and also uses G.hn for in home networking
GiGA Wire Alliance 2019 19Century Link G.hn update …
• 4 port SFP based DPU
– Marvell Alleycat3 chipset for non-
blocking design, with 2.5G to each SFP
– Uses same Methode G.hn SISO / G.hn
MIMO SFP’s as the µDPU
– Integrated reverse powering
– XGS-PON uplink via SFP+ ONT
GiGA Wire Alliance 2019 20Questions, comments ?
21G.Hn – A Breakthrough Technology for MDU Access Paul Arola Senior Design Specialist
June 2-4, 2020
Den Haag, The Netherlands
An event by tech innovators for tech leaders!
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