Page 71 - DCAP311_DCAP607_WIRELESS_NETWORKS

Unit 4: Wireless Networks Types and PAN Technologies

Applications Fields Notes

The technology is commonly used to provide internet to rural areas in which installing other
types of technology becomes too expensive. Installed in the cities, WiMAX will allow people to
connect to the internet whenever they want without looking for ‘hotspots’. This will transform
the user internet mobile lifestyle.

Working Principal
The first WiMAX standard IEEE 802.16, was created to administrate the interoperability of
all devices working between 10 and 66 GHz.It will allow,as WiFI does, recieve and transmit
encryted information among devices that have the technology. Within this standard, we should
make some remarks to the IEEE 802.16a, IEEE 802.16e-2005 and IEEE802.16m which will allow to
work with frequencies from 2 to 11 GHz, mobility and speed up to 1GB, respectively.

In order to clarify this, an example will be given. Imagine you have a bike which you pick up in a
renting point. This point allows you to create your own touristic routes around the city and this is
automatically uploaded to your bicycle. Using WiMAX working technology the bicycle (mobile
device) will be capable to guide you according to the uploaded touristic tour. In case that you
follow the wrong direction or get lost, the wireless connection will allow you to put you again on
track. Furthermore, if your bike is stolen, it can send a message to the closest police station or to
your smart phone and keep track of it. All this, will be possible just using one access point with
high connection reliability.
Figure 4.3: WiMAX, Working Principle

Source: http://wikid.eu/index.php/Wireless_Metropolitan_Area_Networking_%28WMAN%29
Future Development

Wimax forum is planning to release in 2012 WiMAX Release 2 (standard IEEE802.16m) which
will enable more efficient, faster, and more converged data communications. WiMAX Release
2 will provide,as well, compatibility with Release 1 solutions by upgrading channel cards or
software of the old system.

Self-Assessment

Fill in the blanks:
1. The two kinds of wireless technologies used for WPAN are Bluetooth and ..........................

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