HDR, WLAN and fixed or semifixed, or portable highspeed
internet access (or luggable).
The way I see it the mobile high speed (>64k) market
is mostly fixed or at least stationary, the difference
being fixed omnidirectional vs adaptive directional and/or
simple antenna diversity(two or more antennas, pick the better signal,etc)
But portability always restricts power consumption.
This means 802.11, bluetooth can and will do most of the
job in a hierarchical structure, operators setting
up systems on airports, hotels, etc were one can do
things which demand enough concentration to handle those
information rates.
The hierarchical really mobile structure is now only
NMT,GSM900,GSM1800 but is/will be growing more complex
rapidly as masts and copperwire are made freely available,
like the R-box in USA.
One example is the combined DSL/WLAN box Nokia has
introduced, another is using WLAN to provide fixed
point-to-point internet service like Saunalahti (using
different combinations of fixed directional antennas, yagi
to arrays)
Portabilty is also of little use if not a widely enough
adapted standard.
There is also not enough "good" frequency bands (low freq
with coverage and penetration of walls,etc) around to
have everyone streaming 2Mbps, that is, a multitude
of solutions for different situations, locations is needed.
And to be portable and massproduced, supported, all of
them must be more or less global standards and implemented
more or less in the same hardware.
One difference phone vs laptop is that one always has the
phone in the pocket, but only carries around a laptop/DSL or
similar when it really is needed (work).
The way I see it the market for high speed truely mobile
connections is very small, journalists, police, etc, and not
a question of beeing the size of a handset in a pocket.
That is, low, medium speed data enough for the handset, works
anywhere, and then more luggable high speed devices, all
tied together through a hierarchical system of coverage
and speed. (which demands a reliable system for security,
plugging into all kind of local systems)
GSM-GPRS with good coverage and higher burst rates takes
care of most of this for a long time to come.
Ilmarinen
P.S.Ref moniker, thought I sent you a private mail??
Ilmarinen, Airman, the finnish first engineer who built,
forged the heavens and later the machine Sampo which
produced wealth just by itself (soon lost in minor war, only
small parts remained, now called mobile phones)
P.P.S My viking buddy on the other side of the bay forged
this ship one could fold together and carry around in
a pocket. That was also lost, at least we haven't seen it
in a while, but the cooperation continues, mostly
peacefully and sometimes even with respect. |
