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