Page 69 - 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

Avionics and Aviation Communications Systems

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
Data Volume to be sent (MB) 5.4 11 16 22 27 32 38 43 49 54 59 65 70 76 81 86 92 97 103 108 113 119 124 130

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)

15 49 98 147 197 246 295 344 393 442 492 541 590 639 688 737 786 836 885 934 983 1032 1081 1130 1180

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)
14 53 105 158 211 263 316 369 421 474 527 579 632 685 737 790 843 895 948 1001 1053 1106 1159 1211 1264

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.
13 57 113 170 227 284 340 397 454 510 567 624 681 737 794 851 907 964 1021 1078 1134 1191 1248 1304 1361

12 61 123 184 246 307 369 430 492 553 614 676 737 799 860 922 983 1044 1106 1167 1229 1290 1352 1413 1475

11 67 134 201 268 335 402 469 536 603 670 737 804 871 938 1005 1072 1139 1206 1273 1341 1408 1475 1542 1609

10 74 147 221 295 369 442 516 590 664 737 811 885 958 1032 1106 1180 1253 1327 1401 1475 1548 1622 1696 1769

9 82 164 246 328 410 492 573 655 737 819 901 983 1065 1147 1229 1311 1393 1475 1556 1638 1720 1802 1884 1966

8 92 184 276 369 461 553 645 737 829 922 1014 1106 1198 1290 1382 1475 1567 1659 1751 1843 1935 2028 2120 2212

7
105 211 316 421 527 632 737 843 948 1053 1159 1264 1369 1475 1580 1685 1791 1896 2001 2107 2212 2317 2422 2528

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

184 369 553 737 922 1106 1290 1475 1659 1843 2028 2212 2396 2580 2765 2949 3133 3318 3502 3686 3871 4055 4239 4424
4

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

737 1475 2212 2949 3686 4424 5161 5898 6636 7373 8110 8847 9585 10322 11059 11796 12534 13271 14008 14746 15483 16220 16957 17695
1

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