US 11,742,932 B2
Systems and methods for changing VHF data radio mode due to electromagnetic interference
Thomas D. Judd, Woodinville, WA (US); and Divya Swarup Giriyappa Srinivasan, Bangalore (IN)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Jan. 13, 2021, as Appl. No. 17/148,268.
Claims priority of application No. 202011051245 (IN), filed on Nov. 25, 2020.
Prior Publication US 2022/0166494 A1, May 26, 2022
Int. Cl. H04B 7/185 (2006.01); H04W 28/06 (2009.01); H04W 76/20 (2018.01)
CPC H04B 7/18506 (2013.01) [H04W 28/06 (2013.01); H04W 76/20 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
detecting, external to a very high frequency (VHF) data radio, that (i) at least one of: an aircraft is on ground, an exterior aircraft door is open, aircraft brakes are on, the aircraft is stationary, and all aircraft engines are off, and (ii) at least one of: (a) during a first counter period, receives data indicating that the VHF data radio has received uplink data but does not receive any acknowledgement for data intended to be transmitted by the VHF data radio when the VHF data radio is configured to operate, in a VHF channel, in VHF digital link (VDL) mode 2, and (b) during a second counter period, receives data indicating that the VHF data radio has received such uplink data and a VHF channel utilization exceeds an utilization threshold; and
sending a message to the VHF data radio to change a mode of the VHF data radio from VDL mode 2 to VDL mode A;
wherein channel utilization is a representation of total power in the VHF channel of the VHF data radio.