OverviewOverview ofof BroadbandBroadband TechnologyTechnology PlatformsPlatforms
Chris Moore, Deputy Chief Wireless Telecommunications Bureau
Broadband Workshop
Note: The views expressed in this presentation are those of the author and may not necessarily represent the views of the Federal Communications Commission OverviewOverview
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
2 Residential Advanced Services Lines by Technology as of June 30, 2007
3 DigitalDigital SubscriberSubscriber LineLine (DSL)(DSL)
Most commonly used by local telephone carriers
Variations: ADSL, VDSL
Up to 7 Mbs download; 1 Mbs upload
Distance dependent
4 CableCable BroadbandBroadband ServiceService
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 5 HybridHybrid Fiber/CoaxFiber/Coax (HFC)(HFC) CATVCATV NetworkNetwork
6 GigabitGigabit PassivePassive OpticalOptical NetworkNetwork (GPON)(GPON) FiberFiber toto thethe HomeHome ArchitectureArchitecture
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 Single family homes Softswitch analog/digital video if (for voice) required Optical Network Terminal (ONT)
Source: Fiber to the Home Council
7 TypicalTypical GPONGPON ComponentsComponents
Optional Video Coupler for RF Optical Taps overlay Fiber Splice Closures
Distribution Cable
Drop Feeder Cable 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 8 SatelliteSatellite
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
9 MobileMobile SatelliteSatellite ServiceService AncillaryAncillary TerrestrialTerrestrial ComponentComponent
Satellite provides ubiquitous coverage, including rural areas
Terrestrial base Stations provide coverage in areas where satellite signals may be weak
10 FixedFixed WirelessWireless ServicesServices -- LicensedLicensed
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”.
11 FixedFixed WirelessWireless ServicesServices -- LicensedLicensed
Examples:
Broadband Radio Service/ Educational Broadband Service
Local Multipoint Business Distribution Service Access & Backhaul
W-Fi
802.11 Wi-Fi Hotspot Directly to Backhaul Indoor Modem 12 MobileMobile WirelessWireless BroadbandBroadband ServiceService 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
13 WirelessWireless InternetInternet ServiceService ProvidersProviders (WISPs)(WISPs) -- UnlicensedUnlicensed Part 15 of the FCC rules provides for operation of unlicensed devices Many kinds of devices operate under these low power rules - Wi-Fi Various techniques are used to enable broadband service in rural areas Metropolitan, Rural & Data speeds vary Community Networks There are thousands of WISPs operating on an unlicensed basis around the U.S.
14 BroadbandBroadband OverOver PowerPower LinesLines
High Voltage Medium Voltage Low Voltage ~ 1kVolts to 40 kVolts ~ MVolts ~ 120/240 Volts LV Distribution Coupler Repeater Transformer
Power Generation Plant Substation Backhaul Point Power Line (Gateway) Interface Device Located In Home Access BPL
InternetInternet In some Access implementations, these physical links are replaced by BPL signals are extracted here Aggregation wireless links & converted into/from traditional Point communication packets for appropriate communication direction 15 BPLBPL :: BypassingBypassing thethe TransformerTransformer
Low-Voltage Distribution Transformer Medium Voltage Coupler
Bridge & Control Module 16 ConclusionConclusion
Thank you!
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