US 12,446,018 B2
WiFi roam with band switch avoidance
Shehla S Rana, San Jose, CA (US); Rajneesh Kumar, Cupertino, CA (US); and Yang Yu, Redwood, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by APPLE INC., Cupertino, CA (US)
Filed on Apr. 5, 2023, as Appl. No. 18/296,193.
Prior Publication US 2024/0340872 A1, Oct. 10, 2024
Int. Cl. H04W 88/06 (2009.01); H04W 72/0453 (2023.01)
CPC H04W 72/0453 (2013.01) [H04W 88/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a wireless device with a first transceiver and a second transceiver, the method comprising:
connecting the first transceiver to a first device via a first sub-band of a frequency band, and connecting the second transceiver to a second device via a second sub-band of the frequency band;
determining low signal quality for the first transceiver on a current channel of the first sub-band;
scanning, via the first transceiver, the first sub-band for a candidate channel that meets a target criteria;
when the candidate channel that meets the target criteria is found on the first sub-band, joining, via the first transceiver, the candidate channel; and
when the candidate channel that meets the target criteria is not found on the first sub-band:
performing a band switch protocol to cause the first transceiver and the second transceiver to switch sub-bands;
scanning, via the first transceiver, the second sub-band for the candidate channel that meets the target criteria on the second sub-band; and
joining, via the first transceiver, the candidate channel that meets the target criteria on the second sub-band.