At the Super WiFi Summit
White Spaces: The Radio Evolution
Tuesday ‐ 09/13/11 • 3:30-‐4:15pm
Brough Turner , Founder , netBlazr.com
Smart antennas and smart radios, Cognitive Radio and Beam Forming are on the verge of being incorporated into product. As we head toward these technologies, the opportunities exist for new models of service sharing and interconnection to deliver broadband solutions.
Unraveling Multimodality with Large Language Models.pdf
White spaces above 3 g hz and an application
1.
2. This
slide
was
not
presented
White
Spaces:
The
Radio
Evolu5on
Tuesday
-‐
09/13/11
•
3:30-‐4:15pm
Brough
Turner
,
Founder
,
netBlazr.com
Smart
antennas
and
smart
radios,
Cogni7ve
Radio
and
Beam
Forming
are
on
the
verge
of
being
incorporated
into
product.
As
we
head
toward
these
technologies,
the
opportuni7es
exist
for
new
models
of
service
sharing
and
interconnec7on
to
deliver
broadband
solu7ons.
3. Radio Spectrum Occupancy
Urban areas, 30 MHz to 3 GHz. Above 3 GHz mostly vacant!
As measured by Shared Spectrum Company and the
University of Kansas Center for Research for the
NSF National Radio Network Research Testbed (NRNRT)
4. Radio Spectrum Occupancy
Urban areas, 30 MHz to 3 GHz. Above 3 GHz mostly vacant!
As measured by Shared Spectrum Company and the
University of Kansas Center for Research for the
NSF National Radio Network Research Testbed (NRNRT)
5. WHITE
SPACES
ABOVE
3
GHZ
Radio
technology
evolu5on,
with
applica5ons
Brough
Turner
Founder
&
CTO
netBlazr
Inc.
6. Outline…
• Value
of
higher
frequencies
– Limits
are
tech
not
physics;
MIMO;
beamforming;
HF
-‐>
shorter
WL
-‐>
7ghter
beams
– >
3
GHz
is
mostly
white
space
in
most
places
• SB
seeking
secondary
access
now
• Example
of
app
at
5
GHz
7. Spectrum
Myth
TV
bands
are
“beach
front”
spectrum
• Based
on
legacy
technology,
not
physics!
– Travels
farther
thru
the
air
–
No!
– Thru
windows
–
roughly
the
same
– Goes
thru
masonry
–
nothing
works
well
7
8. Free
space
path
loss
Seems
to
say
more
,
more
loss
But
this
equa7on
encapsulates
two
effects:
Actual
path
loss
Receiving
antenna
aperture
(assumed
to
be
½
wavelength)
5
GHz
photons
go
just
as
far
as
700
MHz
photons
!
8
19. Radio
receivers
with
MIMO
• Far
from
the
selec7vity
and
sensi7vity
of
mammalian
vision
systems
• Far
ahead
of
receivers
in
use
when
regulatory
schemes
were
established
20. Mul7ple
radios
per
chip
Intel
Like
CPU
cores
…
• 2x2
MIMO
–
2008
• 4x4
MIMO
–
2011
then
Fujitsu
• 8
radios,
16
radios,
…
Be1er
and
be1er
beam-‐forming
!
AMD
20
21. Beamforming
• Select
among
mul7ple
predefined
antenna
elements
– Widely
used
with
single
radios
(2G,
3G,
Wi-‐Fi
–
Vivato,
Ruckus
Wireless)
• Adap7ve
antenna
arrays
– Dynamically
compute
phase
and
amplitude
for
each
antenna
element
– Adapts
for
desired
signal
while
also
reducing
interference
21
22. Beamsteering
8
antenna
elements
spread
over
3.5
λs,
i.e.
~18
cm,
or
<
7.5”
at
5.8
GHz
22
23. Beamsteering
8
antenna
elements
spread
over
3.5
λs,
i.e.
~18
cm,
or
<
7.5”
at
5.8
GHz
23
24. Beamsteering
8
antenna
elements
spread
over
3.5
λs,
i.e.
~18
cm,
or
<
7.5”
at
5.8
GHz
24
25. Beamsteering
~2017:
>500
Mbps
Wi-‐Fi
to
~1
Km
at
mass
market
prices
?
4x4
MIMO
with
8-‐12
antenna
elements
25
26. Beamsteering
~2017:
>500
Mbps
Wi-‐Fi
to
~1
Km
at
mass
market
prices
?
4x4
MIMO
with
8-‐12
antenna
elements
26
27. Beamsteering
~2017:
>500
Mbps
Wi-‐Fi
to
~1
Km
at
mass
market
prices
?
4x4
MIMO
with
8-‐12
antenna
elements
27
28. TVWS
–
Beach-‐front
Property?
• MIMO
antenna
element
separa7on
>=
½
wavelength
– 2.1
meters
at
70
MHz
– 21
cm
at
700
MHz
• But
only
– 2.5
cm
for
5.8
GHz
Wi-‐Fi
Ruckus
Wireless
Wavion
Networks
28
DAP-‐2553
D-‐Link
29. Spectrum
innova7on
• Today’s
regula7on
inhibits
innova7on
• Technology
has
outrun
today’s
regula7on
• Decades
of
further
innova7on
ahead
• “Secondary
use”
the
best
path
forward
– 5
GHz
UNII
bands;
Amateur
radio;
TV
white
space
29
30. Prospects
for
Change
• Substan7al
vested
interests
– Broadcasters,
cellular
operators,
many
other
exis7ng
spectrum
owners
• Overwhelming
success
of
WiFi,
Bluetooth,
etc.
– Commercial
successes
new
interests
30
31. Prospects
for
addi7onal
bands
• More
access
in
4.9
GHz
–
6.0
GHz
• IMT-‐Advanced
candidate
bands
– 2300-‐2400,
2700-‐2900,
3400-‐4200,
4400-‐5000
MHz
– Would
take
years
to
clear
but
could
be
used
now
under
secondary
use
protocols
(like
802.11y)
31
32. Prospects
for
addi7onal
bands
• More
access
in
4.9
GHz
–
6.0
GHz
• IMT-‐Advanced
candidate
bands
– 2300-‐2400,
2700-‐2900,
3400-‐4200,
4400-‐5000
MHz
– Would
take
years
to
clear
but
could
be
used
now
under
secondary
use
protocols
(like
802.11y)
• My
wish:
All
spectrum
above
3
GHz
unless
specifically
excepted
32
35. netBlazr
–
“Skype
for
broadband”
• Cloud-‐based
soyware
plazorm
manages
fiber
&
wireless
network
built
by
netBlazr
users
• Leverage
evolving
wireless
tech
• Freemium
pricing
&
care
models
28
June
2011
35
36. Window-‐to-‐window
Head-‐End
n
Head-‐End
3
(South
Sta7on)
Fiber
Head-‐End
1
(Hancock
Tower)
Fiber
Data
Center
Fiber
Head-‐End
2
(State
St)
28
June
2011
36
39. Augmenta7on
service
• Large
companies
have
dual
sources
• Now
dual
source
affordable
for
all
• No
bogus
SLAs,
but
open,
public
on-‐line
network
opera7ons
center
with
current
and
historical
data
• Wiki
documenta7on,
on-‐line
forum,
op7onal
3rd
party
support
28
June
2011
39
40. Adop7on
in
one
building
• 10
prospects
(12-‐25th
floors)
• 5
signed
up
&
on-‐line
• 1
install
next
week
• 3
interested
but
not
prepared
to
act
• 1
declined
I.e.,
60%
penetra>on
in
6
months
28
June
2011
40
43. netBlazr’s
opportunity
$10
B
Transferred
to
Customers
$12
B
$2
B
$11.9
B
is
today’s
market
for
data
services
for
target
SMB’s
in
the
US
IDC
report
on
SMB
IT
Spending
Forecast
12/2009
28
June
2011
43
44. Thank
you
Brough
Turner
netBlazr
Inc.
brough@netblazr.com