Page 135 - DCAP307_PLANNING_AND_MANAGING_IT_INFRASTRUCTURE

Unit 7: Wireless Networks

Wi-Max range: The other disadvantage of Wi-Max network is range. As Wi-Max offer Notes
70Mbps in range with moving station but in practice it is quite different because it is
possible only in specify or ideal circumstances. If a user staying away from the specified
environment then speed can drop considerably.

Wi-Max Bandwidth: Like other network Bandwidth is collective amongst clients in a
specified zone. But if there are a lot of users in one area the speed decreases which may be
2 to 10 Mbps of shared bandwidth.

Expensive network: The most disadvantage of Wi-Max is its installation and operational
cost. Due to heavy structure, tower, antennas, etc. makes the Wi-Max network collectively
high cost network.
Bad Weather: The quality of services decreases in rainy season because the weather
condition could interrupt the signal which may cause of bad signal and broadcasting may
be stop or interrupted.
Wireless equipments: If you are trying to use much wireless equipment at a time within
Wi-Max network then these equipments may cause interference and could interfere with
your broadcasting data or face some compromised speed.

Power consuming: Wi-Max network is very heavy in structure therefore need much
electrical support for running the overall network.
Data Rate: The data rate of Wi-Max as compared to other network such as fibre optics,
satellite, cables, etc. are very slow.

Self Assessment

Fill in the blanks:
12. Wi-Max stands for ....................................
13. The Wi-Max technology offers around .................................... per second without any need
for the cable infrastructure.
14. .................................... Wi-MAX takes the fixed wireless application a step further and enables
cell phone-like applications on a much larger scale.

15. The general initiative of metropolitan area wireless networking, as envisioned with 802.16,
begins with what is called ....................................

Case Study Dharamsala Community Wireless Mesh Network

he Dharamsala Wireless-Mesh Community Network came to life in February 2005,
following the deregulation of Wi-Fi for outdoor use in India. By the end of February
T2005, the mesh had already connected 8 campuses. Extensive testing during February
of 2005 showed that the hard mountainous terrain is most suitable for mesh networking,
as conventional point-to multipoint networks, cannot overcome the line-of-sight limitations
presented by the mountains. mesh topology also offered much larger area coverage,
while the “self healing” nature of mesh routing, proved to be essential in places where
electricity supply is very erratic at best.
Contd....

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