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is
is
a
r
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d
o
m
ac
ce
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s
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m
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p
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ase
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n
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SM
A
/C
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an
d
th
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e
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tr
an
s
m
is
s
io
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o
f
co
llid
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p
ac
k
ets
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s
u
b
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ec
t
to
d
is
cr
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ac
k
o
f
f
T
im
er
r
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l
es.
DC
F
u
s
e
s
t
w
o
tech
n
iq
u
es
f
o
r
p
ac
k
et
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s
m
is
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io
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h
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a
t
w
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w
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y
h
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n
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ized
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ig
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itt
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ea
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ll
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er
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tech
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r
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d
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e
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th
e
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T
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m
ec
h
a
n
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m
.
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h
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e
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h
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el
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e
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d
i
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a
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f
r
a
m
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b
ef
o
r
e
tr
an
s
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itti
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g
a
p
ac
k
et.
W
h
en
a
d
est
in
at
io
n
s
tatio
n
r
ec
eiv
e
s
a
R
T
S
f
r
a
m
e,
it
n
o
tif
ie
s
th
e
C
T
S
f
r
a
m
e
t
h
at
it
h
as
r
ec
eiv
ed
an
R
T
S
f
r
a
m
e.
A
f
ter
th
at,
n
o
r
m
al
p
ac
k
et
tr
an
s
m
i
s
s
io
n
ca
n
o
cc
u
r
an
d
an
AC
K
r
esp
o
n
s
e
ca
n
al
s
o
b
e
g
en
er
ated
.
T
h
e
R
T
S/C
T
S
m
ec
h
a
n
i
s
m
is
u
s
ed
to
s
o
lv
e
th
e
Hid
d
en
T
er
m
i
n
als
p
r
o
b
lem
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d
th
e
H
id
d
en
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er
m
i
n
als p
r
o
b
le
m
is
t
h
at
m
u
ltip
l
e
p
air
s
o
f
n
o
d
es c
an
n
o
t h
ea
r
ea
c
h
o
t
h
er
.
Mo
r
e
s
p
ec
if
icall
y
,
D
C
F
i
s
d
escr
ib
ed
as
f
o
llo
w
s
.
A
s
tatio
n
w
it
h
a
n
e
w
p
ac
k
et
m
o
n
i
to
r
s
w
h
et
h
er
th
e
ch
a
n
n
el
is
e
m
p
t
y
o
r
n
o
t,
an
d
if
th
e
ch
a
n
n
el
is
e
m
p
t
y
f
o
r
a
p
er
io
d
o
f
ti
m
e
ca
lled
DI
FS
,
t
h
e
s
tatio
n
tr
an
s
m
it
s
th
e
p
ac
k
et.
Ho
w
e
v
er
,
if
y
o
u
k
n
o
w
t
h
at
t
h
e
ch
a
n
n
el
i
s
b
u
s
y
(
eith
er
i
m
m
ed
iatel
y
o
r
th
r
o
u
g
h
DI
FS
)
,
th
e
s
tatio
n
w
il
l
w
ait
f
o
r
th
e
DI
FS
to
m
o
n
ito
r
u
n
ti
l
t
h
e
ch
a
n
n
el
i
s
e
m
p
t
y
.
An
d
to
av
o
id
ch
a
n
n
el
ca
p
t
u
r
e,
th
e
s
ta
tio
n
m
u
s
t
w
ait
f
o
r
a
r
a
n
d
o
m
b
ac
k
o
f
f
ti
m
e,
ev
en
th
o
u
g
h
t
h
e
c
h
an
n
el
i
s
e
m
p
t
y
d
u
r
in
g
DI
F
S b
et
w
ee
n
t
w
o
co
n
s
ec
u
tiv
e
n
e
w
p
ac
k
et
tr
an
s
m
is
s
io
n
s
.
D
C
F
u
s
es
a
b
in
ar
y
ex
p
o
n
e
n
tial
b
ac
k
o
f
f
s
ca
le
f
o
r
ef
f
icie
n
c
y
.
I
m
m
e
d
iatel
y
a
f
ter
DI
FS
,
th
e
ti
m
e
is
s
lo
tted
,
w
h
ic
h
is
t
h
e
a
m
o
u
n
t
o
f
ti
m
e
t
h
at
an
y
s
tati
o
n
ca
n
d
etec
t
if
a
n
o
th
er
s
tatio
n
h
a
s
s
e
n
t
a
p
ac
k
et,
an
d
th
i
s
ti
m
e
d
ep
en
d
s
o
n
th
e
p
h
y
s
ical
la
y
er
.
DC
F
is
s
elec
ted
b
et
w
ee
n
(
0
,
w
-
1
)
f
o
r
th
e
b
ac
k
o
f
f
ti
m
e
in
p
ac
k
et
tr
an
s
m
i
s
s
io
n
.
T
h
is
w
v
al
u
e
is
ca
lled
th
e
C
o
n
te
n
tio
n
W
i
n
d
o
w
a
n
d
is
r
elate
d
to
th
e
n
u
m
b
er
o
f
f
ail
u
r
es
to
s
e
n
d
a
p
ac
k
et.
W
h
en
atte
m
p
ti
n
g
to
tr
an
s
m
it
a
p
ac
k
et
f
o
r
th
e
f
ir
s
t
ti
m
e,
w
i
s
c
h
o
s
en
a
s
C
W
m
i
n
an
d
w
in
cr
ea
s
es
b
y
a
n
e
x
p
o
n
e
n
tial
p
o
w
er
o
f
2
as
th
e
n
u
m
b
er
o
f
f
ailed
tr
an
s
m
is
s
io
n
s
i
n
cr
ea
s
es,
an
d
ca
n
in
cr
e
ase
to
C
W
m
a
x
.
T
h
e
b
ac
k
o
f
f
ti
m
er
is
d
ec
r
em
e
n
ted
w
h
e
n
th
e
ch
a
n
n
el
is
d
etec
ted
to
b
e
e
m
p
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a
n
d
th
e
b
ac
k
o
f
f
ti
m
er
s
to
p
s
w
h
e
n
it
d
etec
t
s
th
at
t
h
e
c
h
an
n
el
i
s
tr
an
s
m
itti
n
g
.
I
f
t
h
e
ch
a
n
n
el
i
s
f
o
u
n
d
to
b
e
e
m
p
t
y
t
h
a
n
o
n
e
DI
FS
,
t
h
e
b
ac
k
o
f
f
ti
m
er
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p
er
ates
ag
ai
n
a
n
d
th
e
p
ac
k
et
i
s
tr
an
s
m
i
tted
w
h
e
n
th
e
ti
m
er
b
ec
o
m
e
s
0
ag
ai
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
10
,
No
.
3
,
J
u
n
e
2020
:
2
5
8
9
-
259
9
2592
I
n
C
SM
A
/
C
A
,
a
d
es
tin
a
tio
n
b
r
o
ad
ca
s
ts
an
AC
K
w
h
e
n
i
t
s
u
cc
e
s
s
f
u
ll
y
r
ec
eiv
e
s
a
p
ac
k
e
t
to
d
etec
t
a
co
llis
io
n
.
AC
K
is
s
e
n
t
i
m
m
e
d
iatel
y
af
ter
a
s
h
o
r
t
ti
m
e,
ca
ll
ed
SIFS,
at
th
e
en
d
o
f
th
e
p
ac
k
et,
an
d
s
i
n
ce
SIFS
is
s
h
o
r
ter
th
a
n
DI
FS
,
o
t
h
er
s
t
atio
n
s
ca
n
n
o
t
d
eter
m
in
e
th
at
th
e
c
h
a
n
n
el
is
e
m
p
t
y
u
n
til
t
h
e
en
d
o
f
th
e
A
C
K.
I
f
t
h
e
s
tat
io
n
t
h
at
s
en
t
t
h
e
p
a
ck
et
d
o
es
n
o
t
r
ec
eiv
e
a
n
AC
K
f
o
r
a
ce
r
tai
n
a
m
o
u
n
t
o
f
ti
m
e
o
r
an
o
t
h
er
p
ac
k
et
tr
an
s
m
is
s
io
n
i
s
d
etec
ted
o
n
th
e
ch
an
n
el,
it is
r
esc
h
ed
u
le
b
y
th
e
b
ac
k
o
f
f
r
u
le.
Fig
u
r
es
3
an
d
4
s
h
o
w
a
p
ac
k
et
tr
an
s
m
i
s
s
io
n
p
r
o
ce
s
s
b
etw
ee
n
A
an
d
B
w
it
h
DC
F
a
n
d
R
T
S/C
T
S
m
ec
h
a
n
i
s
m
,
r
e
s
p
ec
tiv
el
y
.
W
h
en
th
e
b
ac
k
o
f
f
ti
m
er
o
f
ST
AT
I
ON
A
b
ec
o
m
e
s
ze
r
o
,
it
is
a
p
r
o
ce
s
s
o
f
s
en
d
i
n
g
a
p
ac
k
et
af
ter
DI
FS
ti
m
e
a
n
d
r
ec
eiv
in
g
an
AC
K
f
r
o
m
t
h
e
d
esti
n
atio
n
.
I
f
t
h
e
d
ata
is
s
u
cc
es
s
f
u
ll
y
s
e
n
t,
A
r
a
n
d
o
m
l
y
s
elec
t
s
a
v
al
u
e
t
o
p
r
o
ce
e
d
w
ith
th
e
ti
m
er
a
n
d
B
w
ill
al
s
o
r
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m
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h
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e
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p
r
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th
at
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h
en
t
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f
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b
ec
o
m
e
s
0
a
n
d
B
tr
an
s
f
er
s
th
e
p
ac
k
et.
Ho
w
ev
er
,
w
h
e
n
t
h
e
n
o
d
e
o
f
r
ec
ip
ien
t
o
f
th
e
s
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o
o
f
ed
f
r
a
m
es
r
esp
o
n
s
e
s
AC
K
to
th
e
ac
ce
s
s
p
o
in
t
(
A
P
)
w
it
h
an
o
r
ig
in
al
M
AC
ad
d
r
ess
,
th
e
A
P
r
ea
lized
th
e
s
p
o
o
f
in
g
attac
k
in
th
e
n
et
w
o
r
k
.
D
u
e
to
th
e
s
p
o
o
f
in
g
att
ac
k
,
th
e
n
o
d
e
lo
s
t
th
e
ch
a
n
n
e
l
u
tili
za
tio
n
ch
an
g
e.
T
h
er
ef
o
r
e,
w
e
n
ee
d
to
d
esig
n
s
ec
u
r
it
y
a
w
ar
e
f
air
s
c
h
e
m
e
i
n
u
n
s
at
u
r
ated
8
0
2
.
1
1
.
Fig
u
r
e
3
.
DC
F
m
ec
h
a
n
is
m
Fig
u
r
e
4
.
R
T
S/C
T
S m
ec
h
a
n
is
m
2
.
3
.
RT
S/C
T
S
m
ec
ha
ni
s
m
T
h
e
n
o
d
e
th
at
h
as
g
e
n
er
ated
t
h
e
s
h
o
r
test
r
a
n
d
o
m
b
ac
k
o
f
f
ti
m
e
s
u
cc
e
s
s
f
u
ll
y
ac
ce
s
s
es
t
h
e
m
ed
iu
m
a
n
d
tr
an
s
m
it
s
th
e
R
T
S
f
r
a
m
e
f
ir
s
t.
T
h
e
R
T
S
f
r
am
e
co
n
tai
n
s
t
h
e
ad
d
r
ess
o
f
th
e
s
o
u
r
ce
n
o
d
e
to
w
h
ic
h
d
ata
is
to
b
e
tr
an
s
m
itted
an
d
th
e
d
u
r
atio
n
f
ield
u
s
ed
to
s
et
th
e
n
et
w
o
r
k
allo
ca
tio
n
v
ec
to
r
(
NA
V)
.
A
m
o
n
g
th
e
n
o
d
es
r
ec
eiv
in
g
t
h
e
R
T
S
f
r
a
m
e,
t
h
e
d
esti
n
atio
n
n
o
d
e
tr
an
s
m
it
s
th
e
C
T
S
f
r
a
m
e
as
a
r
esp
o
n
s
e
to
th
e
R
T
S
f
r
a
m
e,
an
d
th
e
r
e
m
ain
in
g
n
o
d
es
s
ett
in
g
t
h
eir
NAV
as
th
e
v
al
u
e
o
f
th
e
d
u
r
atio
n
f
ield
i
n
cl
u
d
ed
in
t
h
e
R
T
S
f
r
a
m
e
p
o
s
tp
o
n
e
ac
ce
s
s
.
W
h
en
th
e
tr
an
s
m
i
s
s
i
o
n
o
f
th
e
R
T
S/C
T
S
f
r
am
e
i
s
co
m
p
leted
,
th
e
tr
an
s
m
it
tin
g
n
o
d
e
s
tar
ts
d
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m
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(
m
,
k
)
[
2
5
]
,
to
im
p
r
o
v
e
t
h
e
MA
C
p
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f
o
r
m
an
ce
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y
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d
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th
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r
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lt.
I
n
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o
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[
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a
tech
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M
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L
A
N
[
1
6
].
I
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o
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I
E
E
E
8
0
2
.
1
1
DC
F
M
A
C
w
as
p
er
f
o
r
m
ed
th
r
o
u
g
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m
ath
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m
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l
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n
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s
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m
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lat
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n
.
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u
s
m
at
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m
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l
an
al
y
s
i
s
m
eth
o
d
s
h
av
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b
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n
u
s
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.
B
ian
c
h
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p
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p
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s
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a
Ma
r
k
o
v
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ai
n
tech
n
iq
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m
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d
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C
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A
/ C
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c
h
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ac
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DC
F d
escr
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t
w
o
ch
a
n
n
el
ap
p
r
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h
es
[
2
4
].
2
.
4
.
P
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(
po
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t
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un
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)
P
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s
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d
in
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Fu
n
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n
d
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f
t
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e
8
0
2
.
1
1
m
ed
ia
ap
p
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h
es.
Un
l
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th
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DC
F
(
Di
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C
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d
in
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F
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)
th
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r
r
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s
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it
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MA
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w
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F
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s
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n
tr
all
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tr
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lled
p
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g
f
u
n
ctio
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li
k
e
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C
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th
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n
tr
alize
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p
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all
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th
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is
p
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f
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as
s
h
o
w
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Fig
u
r
e
5
.
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an
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Fi
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n
Fig
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4
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n
Fig
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4
,
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o
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e
o
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er
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o
d
es
th
at
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e
m
p
ty
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h
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el
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io
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f
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est
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itted
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e
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ac
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e
h
i
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e
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t
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r
io
r
ity
.
Fig
u
r
e
9
.
J
o
in
ca
s
e
o
f
a
n
e
w
C
I
o
T
n
o
d
e
in
th
e
s
y
s
te
m
Fig
u
r
e
1
0
.
T
h
e
ca
s
e
o
f
C
I
o
T
n
o
d
e
A
w
ith
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e
n
ial
o
f
s
er
v
ice
(
Do
S)
4.
P
E
RF
O
RM
ANCE E
VA
L
U
AT
I
O
N
T
h
is
p
ap
er
is
b
ased
o
n
th
e
I
E
E
E
8
0
2
.
1
1
DC
F
a
w
ar
e
r
o
b
u
s
t
C
I
o
T
s
ch
e
m
e
a
n
d
ai
m
s
t
o
i
m
p
r
o
v
e
p
er
f
o
r
m
a
n
ce
b
y
r
ed
u
ci
n
g
th
e
n
u
m
b
er
o
f
co
llis
io
n
s
b
et
w
ee
n
th
e
n
o
d
es
w
i
th
t
h
e
s
p
o
o
f
ed
p
ac
k
ets
a
n
d
th
e
n
o
d
es
w
it
h
t
h
e
u
n
-
s
p
o
o
f
ed
p
ac
k
et
s
f
air
l
y
.
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n
o
r
d
er
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alu
ate
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e
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er
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o
r
m
a
n
ce
,
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e
co
m
p
ar
e
th
e
n
u
m
b
er
o
f
co
llis
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n
s
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y
u
s
i
n
g
C
++
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an
d
co
n
f
ir
m
ed
th
at
th
e
n
u
m
b
er
o
f
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llis
io
n
s
o
f
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m
et
h
o
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n
s
id
er
ab
l
y
s
m
al
l.
Fo
r
th
e
d
escr
ip
tio
n
o
f
t
f
air
p
ar
t
o
f
(
2
)
w
e
p
r
ese
n
t
a
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le
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n
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t
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m
e
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er
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n
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itio
n
s
t
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e
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a
m
e
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ef
o
r
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ch
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ec
u
r
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y
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e
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tr
an
s
m
is
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io
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u
n
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at
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r
ated
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1
ca
n
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r
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ce
s
b
y
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ch
n
o
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e.
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e
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o
f
m
o
d
i
f
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g
th
e
b
ac
k
o
f
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m
i
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o
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n
i
n
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g
u
r
e
1
1
.
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y
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eth
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e
lecti
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e
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n
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g
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o
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[
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W
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llis
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en
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t c
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e
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cle
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n
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er
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l
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r
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e
d
.
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n
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ap
er
,
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e
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et
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ac
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o
f
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i
m
e
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o
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e
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e
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e
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h
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o
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t
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n
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ed
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ce
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h
e
n
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m
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er
o
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n
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et
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e
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es
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es
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h
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-
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ed
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ac
k
ets
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l
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ter
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ito
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te
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a
n
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n
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o
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n
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e
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ter
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F
i
g
u
r
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12.
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f
tr
an
s
m
is
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io
n
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s
u
cc
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l
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W
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itialized
to
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W
m
i
n
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f
tr
an
s
m
is
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io
n
f
ails
,
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W
is
ex
p
o
n
en
tiall
y
in
cr
ea
s
ed
to
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W
m
a
x
.
Fig
u
r
e
1
1
.
Secu
r
e
co
llis
io
n
r
a
n
g
e
o
f
th
e
p
r
o
p
o
s
ed
s
ch
e
m
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
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p
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n
g
,
Vo
l.
10
,
No
.
3
,
J
u
n
e
2020
:
2
5
8
9
-
259
9
2596
Fig
u
r
e
12
.
Dy
n
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m
ic
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n
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o
l o
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W
in
th
e
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r
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s
ed
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ch
e
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e
Fig
u
r
e
1
3
s
h
o
w
s
th
e
s
c
h
e
m
e
d
iag
r
a
m
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o
r
th
e
p
r
o
p
o
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ed
s
c
h
e
m
e.
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t
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h
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i
n
i
n
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n
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l
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e0
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.
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f
a
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llis
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r
s
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l
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lect
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ac
k
o
f
f
co
u
n
ter
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th
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n
[
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W
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2
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W
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a
s
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g
e1
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n
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e
o
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u
o
u
s
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lli
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n
,
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n
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s
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s
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Fig
u
r
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13
.
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W
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o
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e
p
r
o
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ch
e
m
e
W
e
co
n
s
tr
u
cted
th
e
s
i
m
u
latio
n
w
it
h
C
++
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d
e
a
n
d
co
n
f
ig
u
r
ed
th
e
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W
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e
o
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h
n
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n
i
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Fi
g
u
r
e
1
4
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e
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n
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e
n
u
m
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o
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e
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o
f
f
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m
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y
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et
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n
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n
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e
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F
ig
u
r
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s
1
5
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6
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r
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.
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o
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I
E
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E
8
0
2
.
1
1
DC
F
b
ased
C
I
o
T
,
th
e
p
o
s
s
ib
ilit
y
o
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lli
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io
n
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h
i
g
h
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ec
a
u
s
e
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e
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e
o
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g
b
ac
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o
f
f
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s
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tio
n
i
s
w
id
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h
is
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n
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er
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ce
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r
ad
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n
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n
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y
in
th
e
n
o
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e
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h
(
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n
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ac
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ets.
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h
e
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er
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n
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,
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t
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e
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llis
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n
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e
r
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r
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ti
n
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f
f
t
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e.
Fig
u
r
e
14
.
p
s
eu
d
o
co
d
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
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I
SS
N:
2088
-
8708
S
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o
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2597
Fig
u
r
e
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m
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llis
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n
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er
o
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n
o
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e
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u
r
e
1
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.
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llis
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ra
m
o
d
K.
a
n
d
Ha
a
s,
Zy
g
m
u
n
t
J.,
“
A
Ne
w
Ba
c
k
o
ff
A
lg
o
rit
h
m
f
o
r
th
e
IEE
E
8
0
2
.
1
1
Distrib
u
te
d
C
o
o
r
d
in
a
ti
o
n
F
u
n
c
ti
o
n
,
”
S
ixth
In
ter
n
a
ti
o
n
a
l
C
o
n
fer
e
n
c
e
o
n
Fu
zz
y
S
y
ste
ms
a
n
d
Kn
o
wle
d
g
e
Disc
o
v
e
ry
,
p
p
.
1
-
8
,
De
c
.
2
0
0
9
.
[1
4
]
M
o
h
a
m
m
a
d
Ho
ss
e
in
M
a
n
sh
a
e
i,
Je
a
n
-
P
ierre
Hu
a
u
x
,
“
P
e
rf
o
rm
a
n
c
e
A
n
a
l
y
sis
o
f
th
e
IEE
E
8
0
2
.
1
1
Distri
b
u
te
d
Co
o
rd
in
a
ti
o
n
F
u
n
c
ti
o
n
:
Bian
c
h
i
M
o
d
e
l
,”
M
o
b
il
e
Ne
two
rk
s
,
p
p
.
1
-
8
,
2
0
0
7
.
[1
5
]
Zh
if
e
i
L
i,
et
al
.
,
“
P
e
rf
o
rm
a
n
c
e
An
a
ly
sis
o
f
IEE
E
8
0
2
.
1
1
DC
F
:
T
h
r
o
u
g
h
p
u
t,
De
lay
,
a
n
d
F
a
irn
e
ss
,”
wire
les
s
c
o
mm
.,
p
p
.
1
-
1
3
,
2
0
1
7
.
[1
6
]
H.
C.
F
o
u
n
d
a
ti
o
n
,
“
W
irele
ss
H
A
R
T
S
p
e
c
i_
c
a
ti
o
n
7
5
:
T
DMA
Da
t
a
-
L
in
k
La
y
e
r,
”
HCF
S
P
EC
-
75
,
2
0
0
8
.
[1
7
]
IS
A
.
IS
A
-
1
0
0
.
1
1
a
-
2
0
1
1
,
“
W
irele
ss
S
y
ste
m
s
f
o
r
In
d
u
strial
A
u
to
m
a
ti
o
n
:
P
r
o
c
e
ss
Co
n
tro
l
a
n
d
Re
late
d
A
p
p
li
c
a
ti
o
n
s,
”
No
v
.
2
0
1
3
.
[1
8
]
X
.
T
h
u
b
e
rt
,
T
.
W
a
tt
e
y
n
e
,
R.
S
tru
ik
,
a
n
d
M
.
Rich
a
rd
s
o
n
,
“
A
n
A
rc
h
it
e
c
tu
re
f
o
r
I
P
v
6
o
v
e
r
t
h
e
T
S
CH
m
o
d
e
o
f
IEE
E
8
0
2
.
1
5
.
4
e
,
”
d
ra
f
t
-
i
e
tf
-
6
ti
sc
h
-
a
rc
h
it
e
c
tu
re
-
0
6
,
M
a
r
.
IE
T
F
Dr
a
ft
,
2
0
1
5
.
[1
9
]
T
e
n
g
f
e
i
Ch
a
n
g
,
T
h
o
m
a
s
W
a
tt
e
y
n
e
,
Qin
W
a
n
g
,
X
a
v
ier
V
i
lajo
sa
n
a
,
“
LL
S
F
:
L
o
w
L
a
ten
c
y
S
c
h
e
d
u
li
n
g
F
u
n
c
ti
o
n
f
o
r
6
T
iS
CH Ne
tw
o
rk
s
,”
IEE
E
In
ter
n
a
ti
o
n
a
l
Co
n
fer
e
n
c
e
o
n
Distri
b
u
ted
Co
m
p
u
ti
n
g
in
S
e
n
s
o
r S
y
ste
ms
(DCO
S
S
)
,
2
0
1
6
.
[2
0
]
Ha
y
th
e
m
Ba
n
y
S
a
l
a
m
e
h
,
S
u
fy
a
n
A
l
m
a
jali,
M
o
u
ss
a
Ay
y
a
sh
a
n
d
Ha
n
y
El
g
a
la,
“
S
e
c
u
rit
y
-
a
wa
re
Ch
a
n
n
e
l
A
ss
i
g
n
m
e
n
t
in
Io
T
-
b
a
se
d
C
o
g
n
it
iv
e
Ra
d
io
Ne
tw
o
rk
s
f
o
r
T
i
m
e
-
Crit
ic
a
l
A
p
p
li
c
a
ti
o
n
s
,”
2
0
1
7
F
o
u
rt
h
I
n
ter
n
a
t
io
n
a
l
Co
n
fer
e
n
c
e
o
n
S
o
ft
w
a
re
De
fi
n
e
d
S
y
ste
ms
(
S
DS
)
,
2
0
1
7
.
[2
1
]
Ha
y
th
v
e
m
Ba
n
y
S
a
la
m
e
h
,
S
u
f
y
a
n
A
lma
jali,
M
o
u
ss
a
Ay
y
a
sh
a
n
d
Ha
n
y
El
g
a
la,
“
Ba
tch
‐b
a
se
d
se
c
u
rit
y
‐
a
w
a
re
sp
e
c
tru
m
sh
a
rin
g
w
it
h
si
m
u
lt
a
n
e
o
u
s
a
ss
ig
n
m
e
n
t
d
e
c
isio
n
s
in
ti
m
e
‐c
rit
ica
l
Io
T
n
e
t
w
o
rk
s
w
it
h
c
o
g
n
it
iv
e
ra
d
io
c
a
p
a
b
il
it
ies
,”
in
T
ra
n
sa
c
ti
o
n
s
o
n
Eme
rg
in
g
T
e
lec
o
mm
u
n
ic
a
ti
o
n
s T
e
c
h
n
o
l
o
g
ies
,
M
a
y
2
0
1
8
.
[2
2
]
Ev
e
rto
n
d
e
M
a
t
o
s,
Ra
m
ã
o
T
ia
g
o
T
ib
u
rsk
i,
L
e
o
n
a
rd
o
A
lb
e
rn
a
z
Am
a
ra
l
a
n
d
F
a
b
ian
o
He
ss
e
l,
“
P
r
o
v
id
in
g
Co
n
tex
t
-
Aw
a
re
S
e
c
u
rit
y
f
o
r
Io
T
En
v
ir
o
n
m
e
n
ts
T
h
ro
u
g
h
Co
n
tex
t
S
h
a
rin
g
F
e
a
tu
re
,”
2
0
1
8
1
7
th
IEE
E
In
ter
n
a
ti
o
n
a
l
Co
n
fer
e
n
c
e
On
T
ru
st
,
S
e
c
u
rity
An
d
Priva
c
y
In
Co
m
p
u
t
in
g
A
n
d
Co
mm
u
n
ica
ti
o
n
s/
1
2
t
h
I
EE
E
In
ter
n
a
ti
o
n
a
l
Co
n
fer
e
n
c
e
On
Bi
g
D
a
ta
S
c
ien
c
e
An
d
En
g
in
e
e
rin
g
(
T
ru
stCo
m/Bi
g
Da
ta
S
E)
,
Ne
w
Yo
rk
,
NY
,
p
p
.
1
7
1
1
-
1
7
1
5
,
2
0
1
8
.
[2
3
]
M
o
sta
f
izu
r
Ra
h
m
a
n
M
a
su
m
,
“
Io
T
S
e
c
u
rit
y
T
r
a
in
in
g
,
Io
T
S
e
c
u
rit
y
Aw
a
re
n
e
ss
,”
Io
T
S
e
c
u
rity
T
ra
in
i
n
g
,
I
o
T
S
e
c
u
rity
Awa
re
n
e
ss
,
Ja
n
.
2
0
1
9
.
[2
4
]
S
.
K.
Ka
n
g
,
Y.
Y.
C
h
o
o
,
“
V
a
riab
le
Ba
c
k
o
ff
S
tag
e
(V
BS
)
A
lg
o
rit
h
m
to
Re
d
u
c
e
Co
ll
isi
o
n
s
i
n
IE
E
E
8
0
2
.
1
1
DCF
,
”
J
.
Ko
re
a
In
st
.
In
f.
C
o
mm
u
n
.
En
g
.
,
1
9
(
6
),
p
p
.
1
3
3
3
-
1
3
4
0
,
2
0
1
5
.
[2
5
]
BJ.
a
n
d
H.
Na
m
,
“
Ba
c
k
o
ff
A
l
g
o
rit
h
m
to
im
p
ro
v
e
DCF
f
u
n
c
ti
o
n
a
li
ty
in
IEE
E
8
0
2
.
1
1
,”
J
.
H.
Na
m,
Ba
c
k
o
f
f
Al
g
o
rit
h
m t
o
imp
r
o
v
e
DCF
fu
n
c
ti
o
n
a
li
ty i
n
IEE
E
8
0
2
.
1
1
,
IJ
CA
,
v
o
l
.
7
(
5
),
2
0
1
4
.
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