| LoRaWAN Header                        | LoRaWAN payload (231 bytes) |
+ --------------------------------------+ --------------------------- +
|                |  FOpts  | RuleID=20  |   W   |  FCN  |  23 tiles   |
+ -------------- + ------- + ---------- + ----- + ----- + ----------- +
|       XXXX     | 4 bytes |  1 byte    | 0   0 |   61  | 230 bytes   |