| FPort  | LoRaWAN payload                                   |
+ ------ + ------------------------------------------------- +
| RuleID | W     | C = b'0 | Bitmap = b'1 | Padding b'000000 |
+ ------ + ----- + ------- + ------------ + ---------------- +
| 8 bits | 1 bit | 1 bit   |    1 bit     |      5 bits      |