Bandwidth for the Home

Chapter 15

The Management of Telecommunications

Houston H. Carr and Charles A. Snyder

2Chapter 15

Introduction Digital bandwidth to the home has evolved

greatly over the past few years. Until recently, connectivity from a home

meant a modem over POTS lines.

3Chapter 15

Options for the Home

Bandwidth

Media

  Wired Wireless

Low    

High    

4Chapter 15

Video-on-demand

Video-on-demand gives the user choice, based on storage of movies and other programs at the source.

Near video-on-demand gives user access to a large library of films, but requires human intervention.

5Chapter 15

Methods of Transporting Television

Transport Digital Analog Quality Cost Requirements

Coaxial X Good Low Analog encoder/decoder

cable X Superior Moderate Digital encoder/decoder

Fiber cable X Superior Same as digital coax

X Good Same as analog coax

T1 on twisted pair

X Moderate High

$19-$80K

Expensive due to high compression and wide variety of components

ISDN on twisted-pair

X Poor High Same as T1

Continued

6Chapter 15

Methods of Transporting Television

Transport Digital Analog Quality Cost Requirements

Satellite X X Superior Competitive Purchase or lease antenna and decoder/amplifier

Broadcast radio

X Good “None” Only need receiver

LAN (Ethernet, frame relay, FDDI)

X Good Encoder/decoder on desktop

7Chapter 15

Small office/home office (SOHO)

More people are working out of their homes, or small satellite offices due to The size and nature of their businessesThe need for special accommodations.

People who work in SOHO realize the value of fixed and mobile connectivity.

8Chapter 15

HFC and FTTC for the Home

Fiber-based broadband alternatives for the home Hybrid fiber coax (HFC)Fiber to the curb (FTTC)

9Chapter 15

Wireless considerations

Wireless is a strong competitor to coaxial cable, UTP, and fiber media for three reasonsThe cost of the last miles is less Installation can be much quicker and less

expensive, and The end node can often move without special

considerations.

10Chapter 15

Wireless considerations

Cellular to the home Multipoint Multichannel Distribution

Systems (MMDS) Data from satellite Bluetooth and IEEE 802.11a/b

11Chapter 15

Bluetooth

Bluetooth is an attempt to allow any wireless device to connect to any other wireless device.Designed for short distancesBandwidth of about 700 Kbps

12Chapter 15

IEEE 802.11a/b A second wireless method of connectivity. IEEE 802.11b has a bit longer range and

much higher bandwidth (11 Mbps). IEEE 802.11a parameters call for a

bandwidth of 51 Mbps, offering a path for video conferencing and other high-speed needs.

13Chapter 15

Internet access Applications and issues include

Web-based learning Copyright Infringement Video compact disk movies (V-CD) Video porn Online banking and Bill paying Online auctions Audio, still pictures, and video download Interactive video chat Web-based gaming

End of Chapter 15

The Management of Telecommunications:

Houston H. Carr and Charles A. Snyder