It prevents the synchronization between elements communicating on the network. Synchronization is actually the operation that consumes the most bandwidth. In LPWAN networks, the nature of data flows is highly predictable. So, rather than saturating the bandwidth with this information, we found it smart to store these communication contexts both in the device and in the network management platform.
When the data is still too heavy to be transported under the given network conditions, SCHC incorporates a fragmentation. This splits the messages and manages their transmission in the network.
Compression : 80% of IoT frame structure is identical from a message to another. SCHC removes any redundant data.
Decompression: The frame sent contains the communication context and the key data to reconstruct the original message.