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Overview of Wireless Technologies

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Commercial Wireless Networks

Personal Area Network (PAN)
Examples : IRDA, Bluetooth
Short range file transfer
Low bandwidth (up to 1mb per second)
Local Area Network (LAN)
Example : 802.11b
An extension of an existing corporate wired LAN
High bandwidth (5Mb per second)
Wide Area Network (WAN)
Examples : Cellular, CDPD
Uses a dial up (phone) connection
Extremely low bandwidth (14.4kb per second)

Bluetooth

Essentially a cable eliminator
Short range, wireless comm protocol
Limited to about 30’ between devices
Unlike 802.11b, NOT a wireless extension of the corporate LAN
Implementation:
Add-in cards for PCs, PDAs (may be built in in future)

Wireless LAN

802.11 is the key technology here
Essentially provides a wireless extension of your existing corporate LAN.
Versions –
802.11b – currently widely deployed
802.11a – higher bandwidth
802.11g – higher bandwidth, backward compatible with 802.11b.

Wide Area Network

Uses cellular / digital cellular networks
Provides essentially world-wide access
Currently low bandwidth (<19k bps)
3G networks promise improvement