- send data through airwaves between devices, instead of physical cable
- e.g : cellular telephone, tabs, wireless networking, satellite television, GPS units
- Mobile users can use their cellular phone to access e-mail anywhere and anytime.
- Travelers with portable computers can connect to the internet through base stations installed in airports, railway station, and other public locations.
- At home, users can connect devices on their desktop to synchronize data and transfer files.
Type of Wireless:
- Wireless Wide Area Network (WWANs)
- Wireless Metropolitan Area Network (WMANs)
- Wireless Local Area Network (WLANs)
- Wireless Personal Area Network (WPANs)
Wireless Technology:
1. INFRA RED
- do not use signal in radio frequency
- send data in short distance
- still used in remote control
- an industrial specification for wireless personal area networks (PANs)
- designed for very short range < 10m
- data speed up to 3Mbps
- connect and exchange information between devices (mobile phone, laptops, PCs, printers)
3. WIRELESS LOCAL AREA NETWORKS (WLANs) WiFi
- WLAN configuration vary from simple, independent, peer-to-peer connections between sets of PCs, to more complex, intra building infrastructure networks
- a point-to-point solution is used to bridge between two LANs and provide alternative to cable between two geographically distant location
- point-to-multi-point solutions connect several, separate locations to one single location or building
4. WiMax
- extend the range of wireless network
- speed up to 70Mbps
- provide access to internet access to fixed location with larger coverage
5. BROADBAND
- providing high-speed wireless access over a wide area from devices such as personal computers to data networks
- planned to be used in the next few years and is estimated to have a range of 50km
Wired Networks Vs Wireless Network
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