Page 68 - ITU-T Focus Group on Aviation Applications of Cloud Computing for Flight Data Monitoring - Avionics and Aviation Communications Systems

ITU-T Focus Group on Aviation Applications of Cloud Computing for Flight Data Monitoring
3) some additional bandwidth is needed to account for sending data recording during the minutes from time of trigger to time of crash. This is 12 Kbps for 1024wps, 6 Kbps for 512wps, 3 Kbps for 256wps and 0.7
Each table shows for a given flight recorder standard (1024, 512, 256, 64 wps) what bandwidth would be required to transmit between 1 and 24 hours of accumulated data assuming the trigger to stream data occurrs between 1
103
27
32
86
16
11
22
92
38
59
76
70
65
43
81
54
49
97
The values shown in the table represent the required bandwidth needed to send the accumulated flight data (1024 wps recording) from an aircraft within the time remaining before recording stops (time of crash)
147
688
836
492
442
393
737
197
344
295
885
98
786
639
246
590
934
541
The green area represents scenarios where 432 Kbps bandwidth may be adequate to send all the accumulated flight data. The red area represents scenarios where more than 432 Kbps may be needed.
Assumptions: 1) the data volumes are raw with no compression 2) transmission rate is raw with no overhead added (in practise some compression may be possible and there will be some overhead)
369
316
1001
579
527
632
685
421
790
737
474
263
895
843
948
211
158
105
The tables below illustrate the bandwidth requirements required for a single aircraft to stream accumulated black box data based on airborne or ground triggering of the transmission.
1021
510
794
681
1078
454
737
567
964
170
113
624
227
340
907
284
397
851
983
553
922
369
614
307
1044
737
123
676
799
1167
1106
860
246
492
430
184
737
804
134
1072
469
1139
1206
335
402
1273
938
1005
201
603
268
670
871
536
1401
1253
1106
1180
1032
1327
958
590
516
737
664
442
221
147
369
295
811
885
492
901
573
1065
164
410
983
1229
328
246
655
819
1556
737
1393
1311
1475
1147
1751
1475
1567
1659
184
1106
737
829
1198
922
1290
645
1014
369
276
553
461
1382
105 211 316 421 527 632 737 843 948 1053 1159 1264 1369 1475 1580 1685 1791 1896 2001 2107 2212 2317 2422 2528
7 Data Volume to be sent (MB) 15 14 13 12 11 10 9 8 5.4 49 53 57 61 67 74 82 92 Avionics and Aviation Communications Systems 108 983 1053 1134 1229 1341 1475 1638 1843 113 1032 1106 1191 1290 1408 1548 1720 1935 119 1081 1159 1248 1352 1475 1622 1802 2028 124 11
123 246 369 492 614 737 860 983 1106 1229 1352 1475 1597 1720 1843 1966 2089 2212 2335 2458 2580 2703 2826 2949
6
147 295 442 590 737 885 1032 1180 1327 1475 1622 1769 1917 2064 2212 2359 2507 2654 2802 2949 3097 3244 3391 3539
5
4
184 369 553 737 922 1106 1290 1475 1659 1843 2028 2212 2396 2580 2765 2949 3133 3318 3502 3686 3871 4055 4239 4424
Bandwidth (Kbps) Needed for Crash Scenario (1024 wps recording)
TRIGGERED TRANSMISSION FLIGHT DATA STREAMING ANALYSIS
3
246 492 737 983 1229 1475 1720 1966 2212 2458 2703 2949 3195 3441 3686 3932 4178 4424 4669 4915 5161 5407 5652 5898
2
369 737 1106 1475 1843 2212 2580 2949 3318 3686 4055 4424 4792 5161 5530 5898 6267 6636 7004 7373 7741 8110 8479 8847
1
737 1475 2212 2949 3686 4424 5161 5898 6636 7373 8110 8847 9585 10322 11059 11796 12534 13271 14008 14746 15483 16220 16957 17695
Minutes before crash Accumulated Data (Hours) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
43