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Unit 7: Wireless Networks

Less than one out of five people of the developed world and an even smaller, little percentage of Notes
people across the world have broadband access today. Existing technologies such as Digital
Subscriber Line (DSL), cable, and fixed wireless are overwhelmed by expensive installs, problems
with loop lengths, upstream upgrade issues, line-of-sight restrictions, and poor scalability.
Wi-Max (802.16) is the next stage to a broadband as well as a wireless world, extending broadband
wireless access to new locations and over longer distances, as well as considerably reducing the
cost of bringing broadband to new areas. Wi-Max (802.16) technology offers greater range and
bandwidth than the other available or forthcoming broadband wireless technologies such as
Wireless Fidelity (Wi-Fi) and Ultra-wideband (UWB) family of standards. It provides a wireless
alternative to wired backhaul and last mile deployments that use Data Over Cable Service
Interface Specification (DOGS1S) cable modems, Digital Subscriber Line technologies (DSL),
T-carrier and E-carrier (Tx/Ex) systems, and Optical Carrier Level (OC-x) technologies.
The general initiative of metropolitan area wireless networking, as envisioned with 802.16, begins
with what is called fixed wireless. A backbone of base stations is connected to a public network, and
each base station carries hundreds of fixed subscriber stations, which can be both public hot spots and
fire-walled enterprise networks. Later in the development cycle of 802.16e, Wi-Max (802.16) is expected
to encourage mobile wireless technology specifically wireless transmissions directly to mobile end
users, This will be similar in function to the General Packet Radio Service (GPRS) and the one times
Radio Transmission Technology (RTT) offered by mobile phone companies.
New organisations as well as individuals are increasingly adopting broadband, whereas those
already using broadband are becoming dependent on it and are demanding better services with
added benefits. To support this exceptional new demand, Wi-Max (802.16) has emerged as a
feasible solution, because of its inherent features that holds great promise for the future of
wireless communications.

Notes There has been a lot of excitement about Wi-Max (802.16) and the impact that the
standards based wireless network technology will have on the broadband access market.
All this hype has generated great expectations, and the industry has responded with
exceptional aggression and commitment toward taking broadband to the next level with
Wi-Max (802.16).

Did u know? Wi-Max technology can operate on both licensed and non-licensed frequencies.
7.4.1 Advantages of Wi-Max

Wi-Max stands for Worldwide Interoperability for Microwave Access services brings long time
term evolution in wireless data market. WiMax Technology is facing many hurdles in market
while it has some great advantages which make it a technology of today. The advantages of
Wi-Max Technology are discussed in details below:
Wi-Max Coverage: The single station of Wi-Max can operate and provide coverage for
hundred of users at a time and manage sending and receiving of data at very high speed
with full of network security.

Wi-Max High Speed: The High speed of connectivity over long distance and high speed
voice makes it more demanded in hardly populated areas plus compacted areas.

Multi-functionality within Wi-Max Technology: Wi-Max Technology perform a variety
of task at a time such as offering high speed internet, providing telephone service,
transformation of data, video streaming, voice application etc.

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