WIreless Connectivity and
Services
Cell Phone Tower |
High speed
wireless is available for laptops, cell phones and other hand held
mobile devices at speeds that used to be reserved for DSL and cable.
The ISPs today can service all
your wireless needs in both your office and home - and your
mobile connections as well.
Dial up can run at 56kbps but the introduction of wireless can make
your connection run up to 2.0Mbps without a wire.
The WiFi connection makes this speed possible. There are devices to
attach to your USB port that connect to WiMax or EV-DO for
your laptop computer.
These devices,
when running from your USB port allow you to connect almost anywhere
without a wireless router
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Cell phones and laptops can access the Internet at these
speeds and have become great mobile devices to access any connection
via the Internet. The speed will make your laptop and cell phones seem
to work as well as your office or home PC. Looking for a hot spot to
connect to is no longer an issue with cell phones and laptops.
The
equipment you use to access these wireless devices is not the same that
you use in an office since no Ethernet cable or NIC card is needed.
Different
wireless providers and industry vendors back either WiMax or LTE, or
both, depending on how these technologies benefit their businesses.
In the
U.S., for example, cellular provider Sprint backs WiMax while its
competitors Verizon and AT&T support LTE. Manufacturing companies
may prefer one or the other depending on their ability to produce
hardware more or less expensively.
Neither
technology is expected to replace Wi-Fi home networks and hotspots. For
consumers, then, the choice between LTE and WiMax comes down to which
services are available in their region and offer better speed and
reliability.
Most
of today's laptops already have a wireless device installed in them
from the manufacturer. The wireless card in the laptop needs an
unblocked wireless port on a router to function.
Using
a WiMax USB device can give you access outside of the
confines of a router. The device can connect your laptop, as does your
cell phone, to towers and satellites that will allow access to wireless
Internet service providers and the Internet.
The
WISPs provide access points using the tower that they use with cell
phones and other devices. The
WiMax device in the USB port on your laptop can pickup a connection
via the WISPs towers or satellites making it very mobile.
--------WiMAX
is a wireless digital communications
system, also known as IEEE 802.16, that is intended for wireless
"metropolitan area networks". WiMAX can provide broadband wireless
access (BWA) up to 30 miles (50 km) for fixed stations, and 3 - 10
miles (5 - 15 km) for mobile stations. In contrast, the WiFi/802.11
wireless local area network standard is limited in most cases to only
100 - 300 feet (30 - 100m).
--------EVDO, also known as EV-DO, 1xEvDO and 1xEV-DO, is a
standard for high speed wireless broadband. The acronym is short for
"Evolution, Data Only" or "Evolution, Data Optimized". It is one of two
major Third Generation, or 3G, wireless standards. The competing
standard is known as W-CDMA
--------3G is designed to provide voice and high-speed mobile
data using the cellular approach already proven to work in mobile phone
networks. The biggest obstacle to implementing high speed wireless
networks is the lack of bandwidth, or range of usable frequencies. Just
as only so many radio stations can be squeezed onto the FM dial, only
so much data can be transmitted across the available bandwidth. EVDO is
an advanced CDMA technology developed by Qualcomm to deal with this
limitation.
--------4G is the fourth generation of
mobile broadband technology. In the comparison of 3G vs. 4G, the latter
offers much faster data speeds of up to 1 Gbps. Verizon introduced 4G
network technology called LTE (Long-Term Evolution) in late 2010 which
has since evolved into LTE advanced. 4G is the current cellular
broadband standard and is MUCH faster than 3G technologies like EVDO.
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Read more - Personal Security Threats to Young Cell Phone Users |
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