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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

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

overview
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
digital subscriber line dsl
Digital Subscriber Line (DSL)
  • Most commonly used by local telephone carriers
  • Variations: ADSL, VDSL
  • Up to 7 Mbs download; 1 Mbs upload
  • Distance dependent
cable broadband service
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

gigabit passive optical network gpon fiber to the home architecture
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

typical gpon components
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

satellite
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
mobile satellite service ancillary terrestrial component
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

fixed wireless services licensed
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”.

fixed wireless services licensed12

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

mobile wireless broadband service
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
wireless internet service providers wisps unlicensed
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

broadband over power lines

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

slide16

Medium Voltage Coupler

Bridge & Control Module

BPL : Bypassing the Transformer

Low-Voltage Distribution Transformer

slide17

Conclusion

Thank you!

julius.knapp@fcc.gov