Wireless networks

Networks are designed according to the number of users and coverage area.

In wireless networks there are several scales on number of users and coverage area.

• Personal: PANs → Bluetooth

• Local: LANs → IEEE 802.11

• Regional: WANs → GSM, UMTS

• Worldwide : Sattelite → Iridium

Types of Wireless networks

Comparison Between Wireless Technologies

Tradeoff between data rate and range

Wireless Technologies (@~2000)

Standardization

Wireless networks are standardized by IEEE.

Under 802 LAN MAN standards committee.

Frequency Bands

Industrial, Scientific, and Medical (ISM) bands.

Unlicensed, 22 MHz channel bandwidth