<s>
NB-Fi	B-General_Concept
Protocol	O
is	O
an	O
open	O
LPWAN	B-General_Concept
protocol	O
,	O
which	O
operates	O
in	O
unlicensed	O
ISM	B-Algorithm
radio	I-Algorithm
band	I-Algorithm
.	O
</s>
<s>
Using	O
the	O
NB-Fi	B-General_Concept
Protocol	O
in	O
devices	O
allows	O
data	O
transmission	O
range	O
of	O
up	O
to	O
10km	O
in	O
dense	O
urban	O
conditions	O
,	O
and	O
up	O
to	O
30km	O
in	O
rural	O
areas	O
with	O
up	O
to	O
10	O
years	O
on	O
battery	O
power	O
.	O
</s>
<s>
NB-Fi	B-General_Concept
Protocol	O
is	O
developed	O
by	O
WAVIoT	O
.	O
</s>
<s>
NB-Fi	B-General_Concept
Protocol	O
employs	O
a	O
Narrow	O
Band	O
technology	O
that	O
enables	O
communication	O
using	O
the	O
Industrial	O
,	O
Scientific	O
and	O
Medical	O
ISM	B-Algorithm
radio	I-Algorithm
band	I-Algorithm
(	O
and	O
in	O
other	O
parts	O
of	O
sub-GHz	O
license-free	O
spectrum	O
as	O
well	O
)	O
.	O
</s>
<s>
NB-Fi	B-General_Concept
devices	O
could	O
be	O
manufactured	O
using	O
widespread	O
electronic	O
components	O
which	O
could	O
easily	O
be	O
manufactured	O
or	O
purchased	O
in	O
every	O
particular	O
country	O
.	O
</s>
<s>
WAVIoT	O
has	O
developed	O
an	O
NB-Fi	B-General_Concept
transceiver	O
that	O
encapsulates	O
the	O
NB-Fi	B-General_Concept
protocol	O
at	O
a	O
physical	O
layer	O
.	O
</s>
<s>
The	O
NB-Fi	B-General_Concept
transceiver	O
supports	O
430	O
–	O
500MHz	O
and	O
860	O
–	O
925MHz	O
frequency	O
bands	O
at	O
50	O
to	O
25,600	O
bit/s	O
data	O
rates	O
.	O
</s>
<s>
The	O
network	O
is	O
based	O
on	O
one-hop	O
star	O
topology	O
and	O
requires	O
a	O
SDR-technology	B-Architecture
base	O
stations	O
to	O
operate	O
.	O
</s>
<s>
NB-Fi	B-General_Concept
Protocol	O
stack	O
is	O
currently	O
implemented	O
on	O
:	O
</s>
<s>
STM32L0x/STM32L4x	O
Series	O
microcontrollers	O
(	O
manufacturer	O
:	O
STMicroelectronics	O
)	O
with	O
NB-Fi	B-General_Concept
transceiver	O
(	O
manufacturer	O
:	O
WAVIoT	O
)	O
or	O
AX5043	O
transceiver	O
(	O
manufacturer	O
:	O
ON	O
Semiconductor	O
)	O
;	O
</s>
