Adding a new region to Arduino LMIC

[iaomari93]

Hey,

I'm trying to add a new region following the "Adding a new region to Arduino LMIC" documentation.My region is similar to EU region.
did all the steps in document. I reached the "Create lmic_newregion.c" section. in the lmic_eu868.c file there is this

// this table is from highest to lowest

static CONST_TABLE(u4_t, bandAssignments)[] = {
  870000000 /* .. and above */    | BAND_MILLI,
  869700000 /* .. 869700000 */    | BAND_CENTI,
  869650000 /* .. 869700000 */    | BAND_MILLI,
  869400000 /* .. 869650000 */    | BAND_DECI,
  868600000 /* .. 869640000 */    | BAND_MILLI,
  865000000 /* .. 868400000 */    | BAND_CENTI,
};

Can anyone tell the purpose for this and how should I change it?

thanks :)

[terrillmoore]

Yes, this table states the duty-cycle requirements by frequency. It says that 870 MHz and above are treated as 0.1% duty cycle, 869.7 to 870 MHz (sorry for typo in comment) are treated as 1% duty cycle, and so forth. 869.4 to 869.65 are treated as 10% duty cycle.

The LMIC uses "bands" to manage duty cycle restriction; all the BAND_MILLI channels are subject to the same 0.1% cap.

If your region does not have duty-cycle restrictions, then this mechanism doesn't apply in your region.

Hope this helps.
--Terry

[IoTThinks]

Thanks for your valuable info.
I have the same question before.