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GLITS Agenda: Fiber to the Home

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Presentation on theme: "GLITS Agenda: Fiber to the Home"— Presentation transcript:

1 GLITS Agenda: Fiber to the Home
Broadband Technology Overview, Steve Belter, Indiana Dataline Corp Active Ethernet FTTH, Oliver Beers, Wintek Corporation GPON FTTH, Steve Biggerstaff, Cinergy MetroNet

2 Broadband Technology Overview
Steve Belter, President Indiana Dataline Corp 427 N 6th Street, Suite C Lafayette, IN 47901

3 Broadband Technologies
ISDN & DSL (too slow) Fixed Wireless – WiFi, WiMax (too slow) Mobile Wireless – 3G, 4G LTE (too slow) Satellite (really too slow) Cable Modems using DOCSIS FTTx Active Ethernet and WDM-PON FTTx GPON and TDM-PON

4 Acronyms: Fiber to where?
FTTH – Fiber to the Home FTTP – Fiber to the Premise FTTB – Fiber to the Building (multitenant office and residential) FTTC – Fiber to the Curb FTTN – Fiber to the Node FTTx – wherever

5 Broadband Quality Measures
Speed (kilobits/sec, megabits, gigabits) Latency (think delay or ping time) Jitter (think ping time variation) Symmetric or asymmetric down/up speeds

6 Terminology Wavelength/frequency – color of the light
Passive vs. active – does an intermediate distribution point need power? PON – Passive Optical Network WDM – Wavelength Division Multiplexing (using different colors at the same time) TDM – Time Division Multiplexing (one at a time, maybe round-robin)

7 Cable Modems – Architecture
HFC – Hybrid Fiber Coax Fiber to the Node – powered cabinet in the neighborhood (grey steel box) Coax from the node to each home Each node typically serves homes (target used to be 500 homes)

8 Cable Modems - DOCSIS DOCSIS – Date Over Cable Service Interface Specification Comcast currently deploying DOCSIS 3.0 Each 6 MHz channel can carry 30 Mbps Bonds 4 or more channels downstream, shared with all of your (node) neighbors Uses TDM for upstream

9 Cable Modems – Summary Node bandwidth shared with your neighbors ( neighbors) Asymmetric speeds (upload slower) TDM upstream increases jitter

10 FTTx Direct Connection
One strand of fiber from the ISP to you Two colors used, one for upstream, the other for downstream (WDM) Usually symmetric speeds up/down Private, not shared, connection to ISP Best speeds, latency, and jitter Requires lots of fiber

11 Active Ethernet – Architecture
Fiber to the Node – powered cabinet in the neighborhood with Ethernet switch Fiber from the node to your home Usually symmetric speeds up/down Typically gigabit from the ISP to the switch in the node, 1-48 neighbors with 100 Mbps each Active node, but needs less fiber

12 Active Ethernet – Summary
Active electronics in the neighborhood node Bandwidth shared with a few neighbors, but may or may not be oversubscribed Excellent speeds, latency, and jitter Uses less fiber

13 Passive Optical Networks
At the node, downstream colors are sent to 8, 16, 32, or 64 homes using a power divider At the node, upstream color is combined from the same 8, 16, 32, or 64 homes using TDM The dividers and combiners are passive, not requiring any electronics or power Unaffected by power outages

14 GPON – Architecture (Gigabit PON)
Fiber to the Node – passive optical splitters and combiners in the node Fiber from the node to your home Typically two colors downstream, one for IP (data/TV/voice), other for analog TV One upstream color for TDM data/voice One of several types of TDM-PON

15 GPON – Summary Nodes don’t need electrical power
Typical downstream is 2.4 Gbps shared with 32 neighbors for both data and TV Typical upstream is 1.2 Gbps shared with 32 neighbors using TDM Asymmetric speeds up/down Good speeds, latency, and jitter Uses less fiber than direct fiber

16 Future Fiber Technology: WDM-PON
Instead of using TDM to share fibers, use WDM (different colors) Passive nodes for reliability Like direct fiber, private non-shared symmetric connections, typically 1 Gbps Same advantages as direct fiber Uses less fiber than direct fiber

17 Summary Comcast using DOCSIS 3.0
Wintek uses direct connections or Active Ethernet Cinergy MetroNet uses GPON, one of the flavors of TDM-PON

18 Questions? Thank you for your attention
Steve Belter Indiana Dataline Corp (direct number)

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