RE: DECT NR+ Data Length Limitation

dejans — Tue, 28 Jan 2025 16:52:47 GMT

Hi,

If you have not changed the sample's modulation scheme, it has the value of 1 as can be seen from the sample's Kconfig file. If you further look at transmission length in the documentation, you can see that the value of 37x8=296 is the value that is given in the table "Bits per subslot index with given modulation scheme" for Modulation Coding Scheme (MCS) with value 1. You could try to change MCS to some other larger value than 1. You can find possible values in the mentioned table.

Best regards,
Dejan

RE: DECT NR+ Data Length Limitation

Eivind J — Tue, 28 Jan 2025 14:54:51 GMT

Have a look at the configured MCS and the packet length in the tx header. When the packet length is 1 and MCS is 1, the maximum number of bytes are 296/8=37. https://docs.nordicsemi.com/bundle/ncs-latest/page/nrfxlib/nrf_modem/doc/dectphy.html#transmission_length.