<s>
Ambient	B-Architecture
networks	I-Architecture
is	O
a	O
network	B-Architecture
integration	O
design	O
that	O
seeks	O
to	O
solve	O
problems	O
relating	O
to	O
switching	B-Protocol
between	I-Protocol
networks	I-Protocol
to	O
maintain	O
contact	O
with	O
the	O
outside	O
world	O
.	O
</s>
<s>
This	O
project	O
aims	O
to	O
develop	O
a	O
network	B-Architecture
software-driven	O
infrastructure	O
that	O
will	O
run	O
on	O
top	O
of	O
all	O
current	O
or	O
future	O
network	B-Architecture
physical	O
infrastructures	O
to	O
provide	O
a	O
way	O
for	O
devices	O
to	O
connect	O
to	O
each	O
other	O
,	O
and	O
through	O
each	O
other	O
to	O
the	O
outside	O
world	O
.	O
</s>
<s>
The	O
concept	O
of	O
Ambient	B-Architecture
Networks	I-Architecture
comes	O
from	O
the	O
IST	O
Ambient	B-Architecture
Network	I-Architecture
project	O
,	O
which	O
was	O
a	O
research	O
project	O
sponsored	O
by	O
the	O
European	O
Commission	O
within	O
the	O
Sixth	O
Framework	O
Programme	O
(	O
FP6	O
)	O
.	O
</s>
<s>
Ambient	B-Architecture
Networks	I-Architecture
was	O
a	O
collaborative	O
project	O
within	O
the	O
European	O
Union	O
's	O
Sixth	O
Framework	O
Programme	O
that	O
investigates	O
future	O
communications	O
systems	O
beyond	O
fixed	O
and	O
3rd	O
generation	O
mobile	O
networks	O
.	O
</s>
<s>
The	O
project	O
worked	O
at	O
a	O
new	O
concept	O
called	O
Ambient	B-Architecture
Networking	I-Architecture
,	O
to	O
provide	O
suitable	O
mobile	O
networking	O
technology	O
for	O
the	O
future	O
mobile	O
and	O
wireless	O
communications	O
environment	O
.	O
</s>
<s>
Ambient	B-Architecture
Networks	I-Architecture
aimed	O
to	O
provide	O
a	O
unified	O
networking	O
concept	O
that	O
can	O
adapt	O
to	O
the	O
very	O
heterogeneous	O
environment	O
of	O
different	O
radio	O
technologies	O
and	O
service	O
and	O
network	B-Architecture
environments	O
.	O
</s>
<s>
Central	O
to	O
the	O
project	O
was	O
the	O
concept	O
of	O
composition	O
of	O
networks	O
,	O
an	O
approach	O
to	O
address	O
the	O
dynamic	O
nature	O
of	O
the	O
target	O
environment	O
,	O
based	O
on	O
an	O
open	O
framework	O
for	O
network	B-Architecture
control	O
functionality	O
,	O
which	O
can	O
be	O
extended	O
with	O
new	O
capabilities	O
as	O
well	O
as	O
operating	O
over	O
existing	O
connectivity	O
infrastructure	O
.	O
</s>
<s>
The	O
Deliverable	O
D1-5	O
"	O
Ambient	B-Architecture
Networks	I-Architecture
Framework	O
Architecture	O
"	O
summarizes	O
the	O
work	O
from	O
phase	O
1	O
and	O
provides	O
links	O
to	O
other	O
relevant	O
material	O
.	O
</s>
<s>
One	O
key	O
result	O
of	O
phase	O
2	O
is	O
an	O
integrated	O
prototype	O
that	O
was	O
used	O
to	O
study	O
the	O
feasibility	O
of	O
the	O
Ambient	B-Architecture
Networks	I-Architecture
concept	O
for	O
a	O
number	O
of	O
typical	O
network	B-Architecture
scenarios	O
.	O
</s>
<s>
This	O
document	O
,	O
referred	O
to	O
as	O
the	O
System	O
Description	O
,	O
is	O
available	O
on	O
the	O
Ambient	B-Architecture
Networks	I-Architecture
website	O
.	O
</s>
<s>
The	O
ACS	O
(	O
Ambient	O
Control	O
Space	O
)	O
is	O
the	O
internal	O
of	O
an	O
ambient	B-Architecture
network	I-Architecture
.	O
</s>
<s>
It	O
has	O
the	O
functions	O
that	O
can	O
be	O
accessed	O
and	O
it	O
is	O
in	O
full	O
control	O
of	O
the	O
resources	O
of	O
the	O
network	B-Architecture
.	O
</s>
<s>
The	O
Ambient	B-Architecture
Networks	I-Architecture
infrastructure	O
does	O
not	O
deal	O
with	O
nodes	O
,	O
instead	O
it	O
deals	O
with	O
networks	O
,	O
though	O
at	O
the	O
beginning	O
,	O
all	O
the	O
"	O
networks	O
"	O
might	O
only	O
consist	O
of	O
just	O
one	O
node	O
:	O
these	O
"	O
networks	O
"	O
need	O
to	O
merge	O
to	O
form	O
a	O
network	B-Architecture
in	O
the	O
original	O
sense	O
of	O
the	O
word	O
.	O
</s>
<s>
ANI	O
:	O
Ambient	B-Architecture
Network	I-Architecture
Interface	O
.	O
</s>
<s>
If	O
a	O
network	B-Architecture
wants	O
to	O
join	O
in	O
,	O
it	O
has	O
to	O
do	O
so	O
through	O
this	O
interface	O
.	O
</s>
<s>
If	O
a	O
resource	O
inside	O
a	O
network	B-Architecture
needs	O
to	O
be	O
accessed	O
(	O
e.g.	O
</s>
<s>
Interfaces	O
are	O
used	O
to	O
hide	O
the	O
internal	O
structures	O
of	O
the	O
underlying	O
network	B-Architecture
.	O
</s>
<s>
The	O
newly	O
composed	O
ACS	O
will	O
of	O
course	O
have	O
its	O
own	O
ANI	O
,	O
ASI	O
and	O
ARI	O
,	O
and	O
will	O
use	O
these	O
interfaces	O
to	O
merge	O
with	O
other	O
Ambient	B-Architecture
Networks	I-Architecture
.	O
</s>
<s>
Other	O
options	O
for	O
composition	O
are	O
to	O
not	O
merge	O
the	O
two	O
Ambient	B-Architecture
Networks	I-Architecture
(	O
Network	B-Architecture
Interworking	O
)	O
or	O
to	O
establish	O
a	O
new	O
virtual	O
ACS	O
that	O
exercises	O
joint	O
control	O
over	O
a	O
given	O
set	O
of	O
shared	O
resources	O
(	O
Control	O
Sharing	O
)	O
.	O
</s>
<s>
More	O
information	O
on	O
FEs	O
is	O
contained	O
in	O
the	O
Ambient	B-Architecture
Networks	I-Architecture
Framework	O
Architecture	O
and	O
the	O
latest	O
version	O
of	O
the	O
System	O
Description	O
.	O
</s>
<s>
Alice	O
has	O
a	O
PAN	B-General_Concept
,	O
a	O
Personal	B-General_Concept
Area	I-General_Concept
Network	I-General_Concept
on	O
her	O
body	O
:	O
she	O
has	O
a	O
Bluetooth	B-Protocol
enabled	O
PDA	B-Application
,	O
mobile	O
phone	O
and	O
laptop	B-Device
that	O
she	O
is	O
carrying	O
,	O
and	O
are	O
all	O
currently	O
turned	O
on	O
,	O
and	O
forming	O
a	O
network	B-Architecture
.	O
</s>
<s>
Her	O
laptop	B-Device
also	O
has	O
the	O
ability	O
to	O
connect	O
using	O
an	O
available	O
WLAN	B-Architecture
,	O
and	O
her	O
mobile	O
phone	O
has	O
the	O
ability	O
to	O
connect	O
through	O
GPRS	B-General_Concept
,	O
though	O
GPRS	B-General_Concept
is	O
slower	O
and	O
much	O
more	O
costly	O
for	O
Alice	O
to	O
use	O
.	O
</s>
<s>
She	O
is	O
now	O
on	O
the	O
move	O
,	O
and	O
her	O
laptop	B-Device
is	O
downloading	O
her	O
emails	O
using	O
the	O
GPRS	B-General_Concept
connection	O
on	O
the	O
mobile	O
:	O
</s>
<s>
While	O
walking	O
,	O
she	O
passes	O
into	O
an	O
area	O
covered	O
by	O
a	O
free	O
WLAN	B-Architecture
hotspot	B-Application
:	O
Her	O
PAN	B-General_Concept
now	O
immediately	O
starts	O
to	O
initiate	O
a	O
connection	O
with	O
the	O
hotspot	B-Application
.	O
</s>
<s>
This	O
is	O
called	O
"	O
merging	O
"	O
of	O
the	O
networks	O
(	O
that	O
of	O
the	O
hotspot	B-Application
and	O
that	O
of	O
her	O
PAN	B-General_Concept
)	O
.	O
</s>
<s>
Once	O
this	O
merging	O
is	O
complete	O
,	O
the	O
downloading	O
of	O
her	O
email	O
continues	O
totally	O
unaffected	O
,	O
but	O
instead	O
of	O
using	O
the	O
expensive	O
and	O
slow	O
GPRS	B-General_Concept
connection	O
,	O
it	O
is	O
now	O
using	O
the	O
newly	O
established	O
WLAN	B-Architecture
connection	O
.	O
</s>
<s>
If	O
she	O
now	O
wants	O
to	O
browse	O
the	O
web	O
with	O
her	O
PDA	B-Application
,	O
the	O
PDA	B-Application
will	O
also	O
use	O
the	O
WLAN	B-Architecture
connection	O
of	O
the	O
laptop	B-Device
:	O
</s>
