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GLITS Agenda: Fiber to the Home

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. Broadband Technology Overview. Steve Belter, President Indiana Dataline Corp

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GLITS Agenda: Fiber to the Home

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  1. GLITSAgenda: 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 www.indiana-dataline.net seb@wintek.com

  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 50-1000 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 (50-1000 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 BelterIndiana Dataline Corp269-8521 (direct number)seb@wintek.comwww.indiana-dataline.net

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