Wireless Technologies

1. 802.11

- Use for Wireless Ethernet networks.

2. Infrared

- Infrared technology allowed computing devices to communicate via short-range wireless signals in the 1990s.

- Using IR, computers could transfer files and other digital data bidirectionally.



3. Bluetooh

- Bluetooth is a radio communication technology that enables low-power, short distance wireless networking between phones, computers, and other network devices. 

- Bluetooth technology was designed primarily to support networking of portable consumer devices and peripherals that run on batteries

- Example

• Cell phones
• Wireless headsets (including hands-free car kits)
• Wireless keyboards
• Printers
• Wireless speakers
• Computers

- Two Bluetooth devices connect to each other by a process called pairing. When you press a button or select a menu option on the unit, a Bluetooth device initiates a new connection.

4. 3G

- It stands for 3rd Generation Mobile Telecommunications/Wireless (3G)

- deliver quality multimedia to mobile devices by way of faster and easier wireless communications as well as “anytime, anywhere” services.

- There are two groups 3GPP and 3GPP2

Differences

802.11b
802.11g
802.11n