Hack 4 802.11g: Like 802.11b, only Faster
Turbo charge your wireless network without
leaving your 802.11b users in the cold.
At the time of
this writing, the 802.11g specification has just been ratified by the
IEEE. 802.11g uses the OFDM encoding of 802.11a
in the 2.4 GHz band, and also falls back to DSSS to maintain backwards
compatibility with 802.11b radios. This means that raw speeds of 54
Mbps (20 to 25 Mbps data) are achievable in the 2.4 GHz band, all
while keeping backwards compatibility with existing 802.11b gear.
This is a very promising technologyso promising, in fact, that
the lack of ratification didn't stop some
manufacturers from shipping gear that used the draft standard, even
before it was ratified.
Pros
Very high data rates
of up to 54 Mbps.Backwards compatibility with the phenomenally popular 802.11b offers
a simple upgrade path for existing users.802.11g uses the same band as 802.11b, so existing antennas and feed
lines can be reused.
Cons
Slightly more expensive than 802.11b, but prices are expected to fall
as more equipment ships.As it uses the 2.4 GHz ISM band,
802.11g will have to contend with many other devices, leading to more
interference in crowded areas.
Recommendation
If you are building a network from scratch, strongly consider the
benefits of 802.11g. It allows existing 802.11b users to continue to
use the network, while providing a significant speed boost for
802.11g users. While it is a very new technology, reports from early
adopters look very good.
Apple has already decided to use 802.11g as
its high speed standard in their new "AirPort
Extreme" line of wireless gear. Note that the WECA
hasn't referred to 802.11g as
"Wi-Fi" yet, but just give them
time.802.11g will likely be a massively popular technology, as it promises
many of the advantages of 802.11a without significantly raising cost
or breaking backwards compatibility. My advice is to keep watching
802.11g and roll it out if you can afford it. Since it offers many
advantages with relatively few drawbacks, I believe it is poised to
become the next massively ubiquitous wireless technology. |
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