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Overview of Broadband Technology Platforms

Overview of Broadband Technology Platforms. Julius Knapp , Chief Office of Engineering and Technology Regional Educational Workshop On Rural Broadband April 30, 2008. Note: The views expressed in this presentation are those of the author and may not necessarily represent the views

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Overview of Broadband Technology Platforms

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  1. Overview of Broadband Technology Platforms Julius Knapp, Chief Office of Engineering and Technology Regional Educational Workshop On Rural Broadband April 30, 2008 Note: The views expressed in this presentation are those of the author and may not necessarily represent the views of the Federal Communications Commission

  2. Overview • Digital Subscriber Line (DSL) • Cable Broadband Service • Fiber • Satellite • Fixed Wireless Service - Licensed • Mobile Wireless Service - Licensed • Wireless Internet Service Providers (WISPs) - Unlicensed • Broadband Over Power Lines

  3. Residential Advanced Services Lines by Technology as ofJune 30, 2007

  4. Digital Subscriber Line (DSL) • Most commonly used by local telephone carriers • Variations: ADSL, VDSL • Up to 7 Mbs download; 1 Mbs upload • Distance dependent

  5. Cable Broadband Service • Developed for TV distribution • Evolved to provide TV/Data/Voice • Up to 15 Mbs download; 2 Mbs upload • Distance independent • Register w/ FCC Cable Modem

  6. Hybrid Fiber/Coax (HFC) CATV Network

  7. Gigabit Passive Optical Network (GPON) Fiber to the Home Architecture Central Office Passive Outside Plant Multi-dwelling units Typically up to 20 km (28 dB) Edge router (data, video) 2.5 Gbps @ 1490 nm splitters points Small/medium enterprises 1.2 Gbps @ 1310 nm Optical Line Terminal (OLT) Optional 1,550 nm to support local analog/digital video if required Single family homes Softswitch (for voice) Optical Network Terminal (ONT) Source: Fiber to the Home Council

  8. Typical GPON Components Optical Taps Optional Video Coupler for RF overlay Fiber Splice Closures Distribution Cable Drop Cable Feeder Cable Optical Line Terminal Outside Plant Splitter Cabinet Optical Patch Panel Optical Network Terminals A single fiber, splitters and subs is the “PON” Optional Video Amplifier Central Office Passive Outside Plant (OSP) Subscriber Premise Source: Fiber to the Home Council

  9. Satellite • Geos; Non-Geos; Leos • Fixed: • C-band – 4 & 6 GHz • V-Sats – 11 & 14 GHz • Mobile Satellite Service • Satellite advantage: Ubiquitous coverage • Limitation: Foliage, rain, etc. can affect availability

  10. Mobile Satellite ServiceAncillary Terrestrial Component Satellite provides ubiquitous coverage, including rural areas Terrestrial base Stations provide coverage in areas where satellite signals may be weak

  11. Fixed Wireless Services - Licensed • Traditional fixed point-to-point service: Microwave signals are aimed along a narrow path using high-gain antennas. • Requires line-of-sight • Applications: Communications backbones; studio-transmitter links; cable relay Origin Terminus Signals can be carried over great distances by relaying them over multiple “hops”.

  12. Wi-Fi Fixed Wireless Services - Licensed Examples: Broadband Radio Service/ Educational Broadband Service Local Multipoint Distribution Service Business Access & Backhaul W-Fi 802.11 Hotspot Backhaul Directly to Indoor Modem

  13. Mobile WirelessBroadband Service • The FCC has created multiple mobile radio services suitable for broadband: • Cellular Service • Specialized Mobile Radio Service (SMRs) • Personal Communications Service (PCS) • Advanced Wireless Service (AWS) • 700 MHz (Recently Auctioned) • Technologies: GSM family; CDMA family; planned WiMAX • Various types of service, with data speeds of up to 2 Mbs • Actual speed depends on several factors • All of the major technologies have developed evolutionary paths to faster data rates

  14. Wireless Internet Service Providers (WISPs) - Unlicensed • Part 15 of the FCC rules provides for operation of unlicensed devices • Many kinds of devicesoperate under these low power rules -Wi-Fi • Various techniquesare used to enable broadband servicein rural areas • Data speeds vary • There are thousands of WISPs operatingon an unlicensed basis around the U.S. Metropolitan, Rural & Community Networks

  15. Coupler Repeater Power Generation Plant Backhaul Point (Gateway) In some Access implementations, these physical links are replaced by wireless links Access BPL Internet Low Voltage Aggregation Point BPL signals are extracted here & converted into/from traditional communication packets for appropriate communication direction High Voltage MediumVoltage Broadband Over Power Lines ~ 1kVolts to 40 kVolts ~ MVolts ~ 120/240 Volts LV Distribution Transformer Substation Power Line Interface Device Located In Home

  16. Medium Voltage Coupler Bridge & Control Module BPL : Bypassing the Transformer Low-Voltage Distribution Transformer

  17. Conclusion Thank you! julius.knapp@fcc.gov

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