achieve a price-performance ratio far superior to what can be achieved with either
INSTEON's simulcasting solves the dilemma. Whenever an INSTEON device hears a
define reduced-function devices that cannot route messages in order to keep costs
© 2006 SmartLabs Technology
INSTEON Simulcasts Messages
counter in each INSTEON message that limits the number of repetitions.)
networking protocols described below--INSTEON simulcasts messages. The other
primitive for such concerns). The upshot is that messages must be routed through
the network, with all of the software complexity and different kinds of hardware
manufacturers and consumers alike--a confusing array of different kinds of devices,
down for commodity products like light switches. But this kind of cost reduction
There are two fundamental differences between INSTEON and any of the other
forces consumers to buy, install and maintain different kinds of devices with different
one medium to overcome the weaknesses of the other. Networks that depend on
propagates messages by simulcasting.
C o m p a r e d
though engineers may view it as necessary or even elegant, significantly raises
(To keep messages from traveling forever and causing a data storm, there is a
INSTEON uses low-cost powerline communications backed up by low-cost radio to
the same time strengthens the signal, whether it is on the powerline or on the radio.
INSTEON Comparisons
that messages do not interfere with each other (except for X10, which is too
INSTEON Is a Dual Mesh Network
protocols, whether on the powerline or the airwaves, go to great lengths to ensure
Page 15
is far from perfect.
home, INSTEON finds a way.
prices to mass-market consumers, and it makes products harder to use. In contrast,
devices that such routing entails. Routing is expensive, so routed protocols usually
reliability in the face of inevitable problems with a single medium. Complexity,
INSTEON is the only home-control networking standard that combines powerline and
capabilities in order to use a routed network. The tradeoff is difficult for
powerline or radio networks--INSTEON is a dual mesh network, and INSTEON
electrical noise, variable attenuation, and phase bridging issues. And anyone who
versus high-cost devices that all work the same way.
the messages are identical, having several devices sending the message at precisely
uses a cellphone knows that radio, even sophisticated state-of-the-art digital radio,
INSTEON's dual mesh approach is a radical breakthrough that uses the strengths of
On the powerline, both X10 and UPB are examined in detail, with a number of Other
powerline alone or radio alone require complex remedies in an attempt to achieve
message along with other INSTEON devices that heard the same message. Since
message intended for another INSTEON device, it synchronously repeats1 the
radio communications. Powerline by itself is a demanding environment due to
There is another fundamental difference between INSTEON and the single-media
January 2, 2006
medium alone. When it comes to command and control communications in the
<< < [Pag.19] > >>
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