WIRELESS TECHNOLOGY

What it is wireless technology ?

􀂉 Wireless networking technologies range from global voice and data networks which allow users networks, to establish wireless connections across long distances, to infrared light and radio frequency technologies that are optimized for short‐range wireless connections.

􀂉 wireless technology is generally used for mobile IT equipment. It encompasses cellular telephones, personal digital assistants (PDA's), and wireless networking.

Type of Wireless Network

􀀹 Wireless wide area networks (WWANs)

􀀹 Wireless metropolitan area networks (WMANs)

􀀹 Wireless local area networks (WLANs)

􀀹 Wireless personal area networks (WPANs)

Application of WiFi

Voice and messaging

• Cell phones, pagers.

• analog or digital standards

– The analog standard is the Advanced Mobile Phone Service (AMPS).

– Digital standards are Global System for Mobile Communications (GSM), Time Division Multiple Access (TDMA), or Code Division Multiple Access (CDMA).

Hand‐held and other Internet‐enabled devices

• Internet‐enabled cell phones and Personal Digital Assistants (PDAs) can connect to the Internet across a digital wireless network

• Uses Wireless Application Protocol (WAP),and WML (Wireless Markup Language)

Data Networking.

􀀹Infra Red
􀀹wireless local area networks (WLANs)
􀀹broadband wireless.
􀀹Bluetooth,
􀀹WiMax

Apa itu BLUETOOTH???

Mobile phones: 1G 2G 3G 4G

• 1G

1G is short for first‐generation wireless telephone technology. This generation of phones and networks is represented by the brick‐sized analog phones introduced in the 1980’s. Subsequent numbers refer to newer and upcoming technology.

• 2G

2G phones use digital networks. Going all‐digital allowed for the introduction of digital data services, such as SMS and email. 2G networks and their digital nature also made it more difficult to eavesdrop on mobile phone calls.

• 3G

3G networks are an in between standard. 3G is seen more as pre4G instead of a standard of its own. The advantage 3G networks have over 2G networks is speed. 3G networks are built to handle the needs of today’s wireless users. This standard of wireless networks increases the speed of internet browsing, picture and video messaging, and handheld GPS use.

• 4G
4G (AKA Beyond 3G) is like the other generations in that its advantage lies in promised increased speeds in data transmission. There is currently no formal definition for 4G, but there are objectives. One of these objectives is for 4G to become a fully IP‐based system, much like modern computer networks. The supposed speeds for 4G will be between 100 Mbit/s and 1 Gbit/s.

# footnote : perbezaan kelajuan 2G dan 3G

2G vs 3G

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