WIRELESS
these devices to monitor how they are This allows us to allocate a channel “Our Air Traffic Control approach
performing.” per application type. There is no delay ensures coverage is maintained
This approach they believe makes doing hand over between cells and consistently and at a high enough
for a very scalable solution. “By security and performance for particular quality of service, even for voice and
not overburdening edge and core applications is guaranteed.” video traffic. The surroundings may be
switches with deep packet inspection Scott Dobson, MD of Extricom’s scary, setting up Wi-fi is certainly not.”
you can easily scale the wireless UK distributor Vcomm, supports Another new contender in the
deployment. This is vital as companies this approach, “We have been marketplace Ruckus believes it has a
are continually adding to their wireless deploying the Extricom solution for solution that takes away the arguments
infrastructure and increasing the type a couple of years and the ability to about AP deployment. Their Technical
and complexity of their applications.” create up to 4 channel ‘Blankets’ Director, Scott Reeves, explains their
Adding to the different approaches within one architecture allows you to approach, “The reason we have this
of where to put the intelligence are dedicate channels for specific traffic debate about multi cell or flood &
variations on the best way to deploy or applications, thus guaranteeing blanket coverage is because most
APs to provide the most effective and performance.” vendors use APs with radiating
efficient coverage. “This ‘Blanket’ approach means antennas. This means that they have to
The traditional approach is to do a that there is no need for expensive manage and control contention on a
detailed site survey and then deploy site surveys.” continuous basis.”
access points strategically around the Roger Hockaday, Marketing Manager “The Ruckus solution is to deploy APs
office or factory to give maximum at Aruba Networks, believes this approach with directional antenna. In fact we have
coverage. Different channels were then is unnecessary, “Our experience is that a static antenna with 12 elements. These
allocated to the access points to ensure the traditional cell approach is perfectly APs can be set up to just cover the area
low interference between overlapping adequate. If an organisation needs to needed and not radiate in and outside
cells and maximum throughput. support these new applications then they the building. Also by using the different
This traditional approach however only need to increase the density with elements we can track users as they
is challenged by a number of vendors 150% overlap for QoS. They can also move around and keep them connected.”
who believe it is better to flood an area deploy AP in a mesh network topology to “Our solution was developed for
with coverage. One of these is Extricom give coverage to awkward areas. It is not VoWiFi and we have repurposed it for
and their VP of Marketing David complex and it means you can stay with general use. Our design gives us twice
Confalonieri explains why they favour open standards.” the coverage of traditional APs.”
a different approach, “WiFi systems Dave Kelly, VP of EMEA at Meru After listening to all these arguments
now have to support voice, multimedia, Networks disagrees with both it is difficult to say which way the
location based and mission critical approaches and he believes their channel should go when deciding
applications all at the same time.” approach is best, “The old school the topology. I guess it is about
“The traditional cell based approach approach to wireless, just doesn’t add which vendor can show, in a real
to coverage was designed for a different up anymore. But there is also no need environment, that they can support the
era and is inefficient. We provide four to flood coverage, what people need applications the client needs to deploy.
physical channels to each access point is coverage without compromise and Moving away from traditional WiFi
and deploy them to give total coverage. that is the Meru way. No expensive site installations there are a number of other
surveys, instead resellers options coming into play which muddy
get happy wireless the waters even greater.
customers without the The first of these WiMax, which
hassle.” is gaining acceptance all around the
“Change something in world and has had great hype over the
the environment - add a last few years can be discarded in the
wall, take one away – no enterprise according to all the people
problem – our Air Traffic we interviewed.
Control and the Air time Pierre Trudeau of Colubris sums
fairness approach takes up the general feeling, “WiMax is
care of it! That’s why designed to be an alternative to DSL
we are the only vendors in a metropolitan area. It has lots of
able to provide reliable features going for it including support
coverage anywhere, be for toll quality voice.”
that in a thirteen century “However indoor it has some issues.
haunted Danish castle You also have to apply for a licence and
with 4 metre thick walls, in most enterprises they like to keep the
on a ship or up a crane.” traffic behind a firewall.”
50 8020 EUROPA JUNE 2008
48,49,50,51.indd 3 13/6/08 09:30:05
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