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Slots at
6W bps 1 I I I 1 I I
Burs$
ads at
1 200 bps 1 I 1 I I I
m rn mm
1 1 l 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
I
Pchannel
references
R-channel
references
Figure 4-5. Timing references between P and R channels
Part Z Annex 10 - Aeronautical Telecommunications
IKTERLEAVE AND ADD
PREAMBLE AND UNIQUE WORD t
CONVOWTIONALLY
ENCODE f
SCRAMBLE AND
ADD FLUSH BRS t
r- I E R RL O -7
1
FEC ENCODED (SU + FLUSH)
SCRAMBLED ENTENDED LENGTH SU
Figure 4-6. R channel burst format
For P-chantwls of 600 and1 2M) bb h r e he fram 1'2
is 2 sec and 1 sec, the slpsdrame is still B seconds
---
EXTENMD LENGTH
SIGNAL UNIT
and mads up of 4 or a P-channel frames.
Annex 10 - Aeronautical Telecommunications Volume ZIZ
Frame l [ l l 1
SIO~(l 11111111~l1llllllll~lllllll1111(11l1111l111(l1111111111(l1111111111(11111111111~1!l1il1l111~11l1111I111~1l111I11111~1111II1111i~lllllllllllllllllllll~lllllllllll(lllllll111~11111111l1~
Fme Seed nird Fmm
word b ~(ad b i d( as U$y Fyd e r U~IW ~onnat
= 0 .t
word ID
Bunts
zr = 0
P-channel
) frame
references
Y
/I
T-channel
slot structure
references
600 bps
bps
o~~~~
Burst
st~uctum
Figure 4-7. Timing references between P and T channels
, - ,I P - c h W frame no. o
Last InterPmmMe
leaver Mock
P-CMIW frame no. 1
P-chnel
frme no. 0
Unique
word
P-Ch
trme
no.0
P-chmd
frame no. i
PxhmW frame no. 2
P-ch
t m e
no.1
P-ch
t m e
no.2
P-chmd
frame no. 2
Rrst Interlamer
block
P-CMIW frame no. 3
P-ch
t m e
no.3
P.ch
trme
no.4
P-channel
t m e no. 3
P-ch
trme
no.5
P-Ch
h m e
no.6
Pthtvlnel
tans no. 4
Seed intsrlewder
MDM
P-ch
f m e
no.7
P-ch
h m e
n0.B
P ~ c W
frme no. s
P c h W
frme no. 6
//
P-ch
t m e
no.0
Pch
t m e
Pch
frane
P-chmnel
frme no. 7
P-ch
h m e
P-ch
h m e
n o . l O n o . l l n o . l 2 n o . t 3 n o . l 4 n a t 5
P-ch
t m e
P-eh
frme
Part I Annex 10 - Aerortautical Telecommunications
k- SUPERFRAME 16 x 0.5 sec = 8.0 sec -.
t
SLOT NO. -7Fmims
500 ms
FRAME 0
a) Slot Structnre
500 ms
FRAME 1
mms
FRAME 15
PREAMBLE 1 #!E h@i 1 SUBSEWEM
BLOCKS
f 32 Or 6 4 1 -INIE RLEAVER BLOCK S(.) I INTERLEAVE AND ADD bits
PREAMBLE AND UNIQUE WORD \ r- -- I 1 FEC ENCODED INFORMATION FIELD
I
CONVOLUTIONALLY f
ENCODE
\,
SCRAMBLE AND 1 ADD FLUSH BITS
SCRAMBLED INFORMATION FIELD
b) Bllrst Format
GwB
BURST
ID
Figure 4-8. T channel format
SIGNAL
UNlT
1
SIGNAL
UNlT
n
Annex 10 - Aeronautical Telecommunications Volume 211
I+----------- m mMU I (10 368 bl$ 4-)
KER FK: AH] BLCCKED -
BEFORE INTERLEAVING
,TEAWE
I
Z PRIMARY P M W
~ ( f l y
MULTIPLEX PRIMARY AND I P
SUBBAND DATA
AND MO FILL-IN BmS t " 1
W DDATA IELD SRUCTURE -
k2 5 hlds of 12 blts &lni U n h P~US 12 2-7
WORD 2 BOCK1 -27 :pqfq m
B(O 1#1 411 W 3&( 3111 11 U \ A f
U r U E f
SWU UNIT 1 WM UNIT
12
-
Y - 3XSk . Y I
Figure 4-9. C channel format at 21.0 kbitsts channel rate
mmVE w 2
Part I Annex 10 - Aeronautical Telecommunications
u
ARIES To Bum
L#M ONLY
I
\ 1
1
WILTI#M PRYARY AND
SUBBAND DATA
S62 1U5 aW%nIDadstD AuoTfnA t ItFs2 lBp bOitlt ssS l1GR2mU zMCeTrnoUlneRgs) L 12 blr 1 1 2 L h ~ 1 2 Nb I~
12
SK~NAL UNIT u~rr ZEROES
Y 3X96blb 96
-- - .- - . - - -
Figure 4-10. C channel format at 10.5 kbitsls channel rate
Annex 10 - Aeronautical Telecommunications Volume ZZI
ATN b
SollllbkJrucuok
Figure 4-11. The SSNL functions and the ATN satellite subnetwork
Part I Annex 10 - Aeronautical Telecommunications
AES
Figure 4-12. SSNDPX entities
Annex I0 - Aeronautical Telecommunications Volume III
Bits
Figure 4-13. General format of a SNPDU
8 7 6 5 4 3 2 1
Bits
8 7 6 5 4 3 2 1
0 1
C
t 2
3
t
S
* if present
** if length not equal to 0
0 1
C
t 2
e
t
S
0 X X 0 0 X X X
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