Page 356 - IT 402 v2.0 class 10
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WiMAX: WiMAX stands for Worldwide Interoperability for Microwave Access. It is a type of telecommunication
technology that provides wireless transmission from multi-point links to portable and fully mobile Internet
access whose range of operation is within 50 km radius from base station. This technology provides speed
up to Mbps. I standard for iM is . . It can connect to Internet connection from far off
location and enables to establish wireless Internet network in a campus.
Satellite: Satellite services can provide broadband Internet access in rural or outlying areas unreached by
wired phone lines or cable connections. Similar to wireless access, satellite connection utilises a modem.
Satellite accesses the Internet via a satellite in Earth’s orbit. The enormous distance that a signal travels
from earth to satellite and back again provides a delayed connection compared to cable and S .
Its installation is similar to satellite connection but runs on different antennas and receiving e uipments.
Wiring connects the antenna to a modem device which is connected to your computer. Bandwidth and
uptime can be degraded by rain, snow and high wind.
Mobile Internet: If there is one technology to name that has revolutionised the way people are contacting
or communicating with each other in the last 20 years, it must be ‘Mobile Cellular Technology’.
Portable devices have been in process of huge changes. The data transfer or download speed varies
with the congestion of the network towers, nature of the data, etc., that have considerably changed and
have been upgraded in last years and thus we can classify the era of mobile technology in different
generations as:
i. First Generation (1G) was introduced in 1980s. It was used for voice services and was based on
technology called as dvanced Mobile hone System M S .
ii. Second Generation (2G) was introduced in late 1990s. It was based on digital technology and Short
Message Service SMS . It used digital signals for voice transmission. It enabled text messaging. lso
Pagers were introduced for text messaging.
iii. Third Generation (3G) enabled higher rate of data transmission and provided multimedia support. In
this generation, wireless technology is more enhanced over previous wireless technologies. Thus, it has
helped in high-speed transmission, advanced multimedia access, video streaming, video chatting on
wireless signal, etc. It has been commonly in use after year 2000.
iv. Fourth Generation (4G) of cellular service has integrated features of 3G with Internet compatibility to
support wireless mobile Internet as the data transmission speed in Standard or is around
five to seven times faster than . provides same features as but with high data transfer speed. It
provides data transfer speed around 5 Mbps. It enables for flawless service in applications like wireless
broadband access Multimedia Messaging Service MMS video chat mobile content and igital
ideo roadcasting .
Some use i-Max technology in their network while other uses technology called ong erm volution
or in Network in India.
INTERNET ACCESS THROUGH WI-FI
An access point is required when we subscribe to an Internet connection. The ISP provides options to purchase
or rent a Wi-Fi router that can act both as an Internet connectivity device and as an access point for Wi-Fi
connectivity.
354 Touchpad Information Technology-X

