Abstract
Within the last two
decades, communication advances have reshaped the way we live our daily lives.
Wireless communications has grown from an obscure, unknown service to an
ubiquitous technology that serves almost half of the people on Earth. Whether
we know it or not, computers now play a dominant role in our daily activities,
and the Internet has completely reoriented the way people work, communicate,
play, and learn.However severe the changes in our lifestyle may seem to have
been over the past few years, the convergence of wireless with the Internet is
about to unleash a change so dramatic that soon wireless ubiquity will become
as pervasive as paper and pen.
Introduction
Broadband wireless
sits at the confluence of two of the most remarkable growth stories of the
telecommunications industry in recent years. Both wireless and broadband have
on their own enjoyed rapid mass-market adoption. Wireless mobile services grew
from 11 million subscribers worldwide in 1990 to more than 2 billion in 2005
[4]. During the same period, the Internet grew from being a curious academic
tool to having about a billion users.This staggering growth of the Internet is
driving demand for higher-speed Internet-access services, leading to a parallel
growth in broadband adoption. In less than a decade, broadband subscription
worldwide has grown from virtually zero to over 200 million.
Wimax voip
A fixed wireless
solution not only offers competitive internet access, it can do the same for
telephone service thus further bypassing the telephone company's copper wire
network. Voice over Internet Protocol (VoIP) offers a wider range of voice
services at reduced cost to subscribers and service providers alike. The
diagram below illustrates a typical solution where a WiMax service provider can
obtain wholesale VoIP services (no need for the WiMax service provider to
install and operate a VoIP soft switch) at about $5/number/month and resell to
enterprise customers at $50 In residential markets.
Future Scope
The IEEE 802.16m
standard is the core technology for the proposed Mobile WiMax Release 2, which
enables more efficient, faster, and more converged data communications. The
IEEE 802.16m standard has been submitted to the ITU for IMT-Advanced
standardization. IEEE 802.16m is one of the major candidates for IMT-Advanced
technologies by ITU. Among many enhancements, IEEE 802.16m systems can provide
four times faster data speed than the current Mobile WiMax Release 1 based on
IEEE 802.16e technology.
Conclusion
WiMax offers benefits
for wire line operators who want to provide last mile access to residences and
businesses, either to reduce costs in their own operating areas, or as a way to
enter new markets. 802.16e offers cost reductions to mobile operators who wish
to offer broadband IP services in addition to 2G or 3G voice service, and
allows operators to enter new markets with competitive services, despite owning
disadvantaged spectrum. The capital outlay for WiMAX equipment will be less
than for traditional 2G and 3G wireless networks, although the supporting
infrastructure of cell sites, civil works, towers and so on will still be
needed.
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