A packet (e.g., an IPv6 packet)
         |                                           ^ (padding bits
         v                                           |       dropped)
+------------------+                      +--------------------+
| SCHC Compression |                      | SCHC Decompression |
+------------------+                      +--------------------+
         |                                           ^
         |   If no fragmentation,                    |
         +---- SCHC Packet + padding as needed ----->|
         |                                           | (integrity
         v                                           |  checked)
+--------------------+                       +-----------------+
| SCHC Fragmentation |                       | SCHC Reassembly |
+--------------------+                       +-----------------+
     |       ^                                   |       ^
     |       |                                   |       |
     |       +--- SCHC ACK + padding as needed --+       |
     |                                                   |
     +------- SCHC Fragments + padding as needed---------+

        Sender                                    Receiver