TYPES OF BROADBAND...2015/08/11 · DIGITAL SUBSCRIBER LINE (DSL) • Uses plain old phone lines...
Transcript of TYPES OF BROADBAND...2015/08/11 · DIGITAL SUBSCRIBER LINE (DSL) • Uses plain old phone lines...
TYPES OF BROADBAND
BROADBAND FLAVORS
Wired:
• Digital Subscriber Lines (DSL)
• Cable Modem
• Leased Lines (T1)
• Fiber Optic Cable
• Broadband Over Powerline (BPL)
Wireless:
• Satellite
• Fixed Wireless
• Wi-Fi
• WiMAX
• Cell (G3,G4)
DIGITAL SUBSCRIBER LINE (DSL)
• Uses plain old phone lines (POTS)
• Voice and data over the same line
• Speed 1.5-8 Mbps
• Requires location near central phone office or switch (18,000 feet)
• Phone lines are everywhere but not all of them are able to support DSL
• Direct one-on-one connection; bandwidth is not shared with neighbors
CABLE MODEM
• Faster than DSL
• Uses the same cable television lines that deliver pictures and sound to your TV set
• Shared connection–speeds can slow down when many people in the same neighborhood are online
• Easy to install
BROADBAND OVER POWERLINE (BPL)
• Delivered through power lines
• Almost all homes and businesses are connected to the power grid
• Still in early stages of development
• Potential interference with radio signals
• Speeds similar to DSL and cable
SATELLITE
• Available most places, including hard-to-reach rural areas
• Slower than cable or DSL. WildBlue download speeds up to 1.5 Mbps and upload speeds up to 256 Kbps.
• Trees and heavy rain affects signal
• Need unobstructed view of southern sky
FIBER OPTIC CABLE
• Delivered over fiber optic cables
• Very high bandwidth
• High cost to build fiber network
• Low maintenance
WIRELESS BROADBAND
• Fast relatively inexpensive deployment
• DSL and cable speeds
• Many varieties
— Point-to-Point
— Point-Multipoint
— Mesh
— Hot zones
— Hot spots
POINT-TO-POINT FIXED WIRELESS
• Uses part of the radio spectrum to send and receive signals. Typically made up of on-the-ground antenna-to-antenna systems.
• Requires indoor or outdoor antenna
• Coverage about 5 miles transmitter or access point
• High bandwidth
• Usually licensed
• Backbone or transport layer
• Line of site
FIXED WIRELESS
http://www.connectusa.com/faq.htm
POINT-TO-MULTIPOINT FIXED WIRELESS
• Broadband delivery to premise
• Consumer or business grade
• One antenna to many sites
• Line-of-sight
• Large coverage area
• Licensed or unlicensed
MESH NETWORK WIRELESS
• Nodes (radios)
o Connect to user
o Transmit to aggregation point
• Typically unlicensed
• Favor urban areas or hot zonesAggregation
Point
MOBILE WI-FI
• Wireless fidelity
• Wi-Fi access points found at cafés, homes, campuses, businesses.
• Access is limited to 50-300 feet
• Coverage limited by location and number of transmitters
• Relatively cheap for providers to set-up
• End-user equipment cheap and easy to install
WHERE TO FIND WI-FI
• Hotels, motels, inns, and resorts
• Airports
• Public libraries
• Cybercafes and fast food restaurants
• Courthouses
• City parks like NYC's Central Park
• Public recreation areas and rest stops
• Truck stops
• RV parks
WIMAX
• Wi-Fi on steroids
• Can cover a large area 30 miles
• Still in early stages of development
• Can support ultra-broadband, a large pipe with lots of bandwidth and speed –just what you would need to run your own real-time online video channel.
• How fast you want to go
• Residential or business use
• Pricing of the provider
HOW MUCH BROADBAND COSTS DEPENDS ON…
Southern Rural Development Center
FOR MORE INFORMATION:
WWW.CONNECTINGCOMMUNITIES.INFO