A comparison of wi-fi and wimax with case studies - Florida State ...
A comparison of wi-fi and wimax with case studies - Florida State ...
A comparison of wi-fi and wimax with case studies - Florida State ...
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mobility. On the other h<strong>and</strong>, WiMax has the biggest coverage, highest data rate <strong>and</strong> also support<br />
mobility. [69][78]<br />
The applications <strong>of</strong> 3G partially overlap <strong>wi</strong>th Wi-Fi <strong>and</strong> WiMax. 3G is a mobile phone<br />
technology, so its main stage is in the cell-phone market; internet access is only an additional<br />
bene<strong>fi</strong>t. 3G’s signal <strong>wi</strong>ll fade out fast when there are too many people in the nearby area tring to<br />
access the Internet at the same time. 3G’s interface is mainly onthrough the cell-phone.<br />
Considering the operation convenience, it is tolerable for checking or sending e-mail, time tables,<br />
or MMS. However for high throughput applications, 3G appears to be not as good as the other<br />
two st<strong>and</strong>ards. The cell-phone’s inborn limitation, keyboard <strong>and</strong> screen size, makes it unsuitable<br />
for internet access. Moreover, 3G’s data rate <strong>and</strong> b<strong>and</strong><strong>wi</strong>dth are not fast enough for internet use.<br />
2.4. Cases<br />
Japan is a successful <strong>case</strong> for 3G development <strong>and</strong> mobile Internet access <strong>and</strong> there are<br />
some unique reasons for this. Japanese 3G service was started in late 2001 called FOMA<br />
(Freedom <strong>of</strong> Mobile Multimedia Access) by NTT DoCoMo. FOMA is the br<strong>and</strong> name <strong>of</strong> NTT<br />
DoCoMo’s 3G service. As the network coverage rate became higher <strong>and</strong> higher, most Japanese<br />
started to get used to checking <strong>and</strong> sending e-mail as well as getting daily information by phones.<br />
This phenomenon especially happens during rush hours in mass transit systems. Teenagers also<br />
like to share secrets, pictures <strong>and</strong> gossip by e-mail <strong>and</strong> MMS. Therefore, FOMA has become part<br />
<strong>of</strong> life <strong>and</strong> Multimedia service is the major applications <strong>of</strong> 3G. The most popular service in Japan<br />
now is called i-mode, it was in 2G <strong>and</strong> then upgrade to 3G. [69][76] – [78]<br />
The 3G service in Korea is called JUNE. It is pushed by SKT (South Korea Telecom) in<br />
November 2002 <strong>and</strong> based on CDMA2000 1X EV-DO. Similar to Japan, it is also focused on<br />
multimedia service. In August 2003, just 8 month later, the users already increased to one million.<br />
JUNE has a music channel, video channel, MMS service <strong>and</strong> NOUL (Korean Idol). It is the <strong>fi</strong>rst<br />
service which realizes the commercial video phone-call. [69]<br />
In Taiwan, 3G cell-phones have become the main stream <strong>and</strong> the system also has upgraded<br />
completely. However, because <strong>of</strong> Wi-Fi <strong>and</strong> WiMax, telecommunication industries are still<br />
seeking where the business <strong>and</strong> balance point are. It is a true struggle in the communication<br />
market. Varieties <strong>of</strong> websites <strong>and</strong> s<strong>of</strong>tware <strong>fi</strong>t users’ different dem<strong>and</strong>s on the Internet. But <strong>wi</strong>th<br />
cell-phones, internet service is only provided by telecommunication industries <strong>and</strong> is very<br />
limited <strong>and</strong> not universal. In addition, because the cell-phones’ speci<strong>fi</strong>cations are not uni<strong>fi</strong>ed,<br />
such as in the revolution <strong>of</strong> screen resolution <strong>and</strong> numbers <strong>of</strong> buttons, it is more dif<strong>fi</strong>cult to<br />
design web pages as well as to promote the service. In Japan, the cell-phones are more uni<strong>fi</strong>ed,<br />
so it is easier to popularize mobile Internet access service. [69][76] – [78]<br />
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