US 12,381,646 B1
Mitigating shadow fading and interference
Uttam Bhat, Fremont, CA (US); Basak Oyman, Mountain View, CA (US); Franklin Mathew Zhang, Irvine, CA (US); and Louie Serrano, Chino Hills, CA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Sep. 21, 2022, as Appl. No. 17/949,885.
Int. Cl. H04J 11/00 (2006.01); H04L 5/00 (2006.01)
CPC H04J 11/0036 (2013.01) [H04L 5/0007 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining Receive Signal Strength Indicator (RSSI) samples associated with one or more packets transmitted by a transmitter to a receiver using a first modulation scheme;
determining a signal-to-noise ratio (SNR) value associated with the RSSI samples and a standard deviation value associated with the RSSI samples;
determining whether the SNR value satisfies a first threshold criterion corresponding to a minimum SNR required with a second modulation scheme at the standard deviation value to meet a target Packet Error Rate (PER); and
based on the determining that the SNR value satisfies the first threshold criterion, causing the transmitter to use the second modulation scheme for a subsequent transmission.