| Wireless
Back to Home Networking
Wireless is one of the new technologies that
should be considered for your home network. Costs have dropped so it
can be well worth the convenience. Wireless eliminates the need to
run Ethernet cables throughout the house. This is particularly handy
if one of your computers is a laptop.
What you will need.
-
Wireless Access Point - This is the “base station” that
connects into the router or is actually a part of the router.
-
Wireless capability in each computer. This can either
be a PCMCIA card that slips into a slot in your laptop, a PCI card
that is installed in your desktop, or a wireless card installed inside
your laptop. Many laptops already have the antenna built in.
Some laptop models have wireless built-in at the factory.
-
Optional:
Signal Booster – One of the problems with
wireless is not getting coverage of the entire house. This device can
help solve that problem.
Three types of Wireless
At this time, there are three standards for
wireless; 802.11b, 802.11a and 802.11g – or more simply referred to b,
a, or g. These standards were introduced into the market in the order
mentioned above. Besides when they became available, other
differences are the radio frequency they use, the speed at which they
transfer data and compatibility with each other. This is summarized
below.
|
|
802.11b |
802.11a |
802.11g |
802.11n |
|
Maturity |
Outdated technology |
Older, less widely adopted |
Current standard |
Future standard |
|
Radio Frequency Used |
2.4Ghz |
5GHz |
2.4GHz |
2.4/5.0GHz |
|
Speed |
11Mbps |
54Mbps |
54Mbps |
540Mbps |
|
Compatibility |
|
|
Compatible with 802.11b |
Compatible with 802.11g/b when using 2.4GHz
band |
Access away from home
One other advantage of wireless is that your laptop can also be
used on other wireless networks away from the home. Coffee
shops, restaurants and airports are setting up wireless access points.
This access is available for free or a fee. Several colleges are
setting up wireless access around campus in locations like libraries,
common areas etc... so students can connect to the network as they roam
around the campus. Businesses are also providing wireless access
in conference rooms and meeting centers.
Security
Wireless networking data travels over radio waves rather than
following wires. This has the potential risk that data can more
easily be intercepted or a person can gain access to a network without
being authorized. Without taking some precautions this means
that your neighbor could "borrow" your high speed Internet access or
someone could sit in your driveway and have access to all of the data
shared on your home network. More information
for home networks is provided in the
Security section but it is
particularly important to think about security when setting up a
wireless network.
Next, to walk through a home
network flowchart to match you needs with the technology,
go to
Home Network Flowchart
12/08/2006
|