Rabu, 14 Februari 2007

Designing A Wireless Network

By Jeffrey Wheat, Randy Hiser, Jackie Tucker, Alicia Neely and Andy McCullough

Understand How Wireless Communication Works
  • Step-by-Step Instructions for Designing a Wireless Project from Inception to Completion
  • Everything You Need to Know about Bluetooth,LMDS, 802.11, and Other Popular Standards
  • Complete Coverage of Fixed Wireless,Mobile Wireless, and Optical
    Wireless Technology

Introduction

You’ve been on an extended business trip and have spent the long hours of the flight drafting follow-up notes from your trip while connected to the airline’s onboard server. After deplaning, you walk through the gate and continue into the designated public access area. Instantly, your personal area network (PAN) device, which is clipped to your belt, beeps twice announcing that it automatically has retrieved your e-mail, voicemail, and videomail.You stop to view the videomail—a finance meeting—and also excerpts from your children’s school play.

Meanwhile, when you first walked into the public access area, your personal area network device contacted home via the Web pad on your refrigerator and posted a message to alert the family of your arrival.Your spouse will know you’ll be home from the airport shortly.

You check the shuttlebus schedule from your PAN device and catch the next convenient ride to long-term parking.You also see an e-mail from your MP3 group showing the latest selections, so you download the latest MP3 play list to listen to on the way home.

As you pass through another public access area, an e-mail comes in from your spouse.The Web pad for the refrigerator inventory has noted that you’re out of milk, so could you pick some up on the way home? You write your spouse back and say you will stop at the store.When you get to the car, you plug your PAN device into the car stereo input port.With new music playing from your car stereo’s MP3 player, you drive home, with a slight detour to buy milk at the nearest store that the car’s navigation system can find.

The minute you arrive home, your PAN device is at work, downloading information to various devices.The data stored on your PAN device is sent to your personal computer (PC) and your voicemail is sent to the Bluetooth playback unit on the telephone-answering device.The PAN device sends all video to the television, stored as personal files for playback. As you place the milk in the refrigerator, the Web pad updates to show that milk is currently in inventory and is no longer needed.The kids bring you the television remote and you check out possible movies
together to download later that night.

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Designing a Wireless Network

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