the fourth..:)

Assalamu’alaikum…

Hello, guys..whazzup..hehe..^^

Just like my previous post, I wanna share with you guys a topic that I’ve learned after cabling which is WIRELESS.

As we all know, wireless means without wire. For deeper meaning, wireless networking technologies range from global voice and data networks which allow user networks, to establish wireless connections across long distances, to infrared light and radio frequency technologies that are optimized for short‐range wireless connections.

Wireless network most commonly use to refer to a telecommunications network whose interconnections between nodes is implemented without the use of wires, such as a computer network.

Do you want to know more about wireless? Click here…

Here are some of the examples

Wireless communication involves:-

• Radio frequency communication

• Microwave communication, for example long‐range line of sight via highly directional antennas or short line‐of‐antennas, short range communication

• Infrared (IR) short‐range communication, e.g. from remote controls or via IRDA

Applications may involve point‐to‐point communication, point‐to‐multipoint communication, broadcasting, cellular networks and other wireless networks.

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

• Voice and messaging,

• Hand‐held and other Internet‐enabled devices, and

• Data Networking.

11)   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).

22)   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)

33)   Data Networking.

·         Infra Red

·         wireless local area networks (WLANs)

·         Broadband wireless.

·         Bluetooth

·         WiMax

Another example of a wireless network setup

 Cellular systems

• 0G, 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 M bit/s and 1 G bit/s.