Wireless LAN Applications

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Wireless LAN Applications
A wireless LAN is one that makes use of a
wireless transmission medium.

• LAN Extension
• Cross-building interconnect
• Nomadic Access
• Ad hoc networking

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LAN Extension

• Wireless LAN linked into a wired LAN on same
  premises
• Wired LAN
• Backbone
• Support servers and stationary workstations
• Wireless LAN
• Stations in large open areas such as
  Manufacturing plants, stock exchange trading
  floors, and warehouses
• Historical buildings
• Small offices

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Multiple-cell Wireless LAN
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Cross-Building Interconnect

• Connect LANs in nearby buildings
• Wired or wireless LANs
• Point-to-point wireless link is used
• Devices connected are typically bridges or
  routers
• This signal point-to-point link is not a LAN.

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Nomadic Access

• Wireless link between LAN hub and mobile data
  terminal equipped with antenna
• Laptop computer or notepad computer
• Uses
• Transfer data from portable computer to office
  server
• Extended environment such as campus

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Ad Hoc Networking

• Temporary peer-to-peer network (no centralized
  server) set up to meet immediate need
• Example
• Group of employees with laptops convene for a
  meeting employees link computers in a temporary
  network for duration of meeting

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Wireless LAN Requirements

• Throughput
• Number of nodes
• Connection to backbone LAN
• Service area
• Battery power consumption
• Transmission robustness and security
• Collocated network operation
• License-free operation
• Handoff/roaming
• Dynamic configuration

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Wireless LAN Categories

• Infrared (IR) LANs
• Spread spectrum LANs
• Narrowband microwave

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Comparison of Wireless LAN technologies
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Bluetooth Techniques Overview

• Universal short-range wireless capability
• Uses 2.4-GHz band
• Available globally for unlicensed users
• Devices within 10 m can share up to 720 kbps of
  capacity
• Supports open-ended list of applications
• Data, audio, graphics, video

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Bluetooth Application Areas

• Data and voice access points
• Real-time voice and data transmissions
• Cable replacement
• Eliminates need for numerous cable attachments
  for connection
• Ad hoc networking
• Device with Bluetooth radio can establish
  connection with another when in range