Methods of controlling location devices in a flight mode
Aspects presented herein may enable a tracking device to disable its transmitter based on determining whether the wireless device is within the vicinity or a threshold distance of an airport and/or based on information or measurements obtained from its modem receiver. In one aspect, a wireless device detects whether the wireless device is within a threshold distance of a target location or whether the wireless device is airborne. The wireless device disables a transmitter of the wireless device based on detecting that the wireless device is within the threshold distance of the target location or that the wireless device is airborne.
1 . An apparatus for wireless communication at a wireless device, comprising:
at least one memory; and
at least one processor coupled to the at least one memory and, based at least in part on information stored in the memory, the at least one processor is configured to:
detect the wireless device is airborne based on at least one of a sonic wave from an aircraft engine or an aircraft transponder signal;
disable a transmitter of the wireless device based on detection of the wireless device being airborne;
detect the wireless device is not airborne after the detection of the wireless device being airborne; and
enable the transmitter based on detection of the wireless device being not airborne.
2 . The apparatus of claim 1 , wherein the at least one processor is further configured to:
transmit, via the transmitter, first information indicative of at least one location of the wireless device, wherein the first information is transmitted prior to disablement of the transmitter.
3 . The apparatus of claim 1 , wherein detection of the wireless device being airborne is further based on a rate of pressure change exceeding a pressure change threshold.
4 . The apparatus of claim 3 , wherein the at least one processor is further configured to:
estimate the rate of pressure change using a pressure sensor.
5 . The apparatus of claim 1 , wherein detection of the wireless device being airborne is based on the sonic wave from the aircraft engine.
6 . The apparatus of claim 1 , wherein detection of the wireless device being airborne is based on the aircraft transponder signal.
7 . The apparatus of claim 1 , wherein to detect the wireless device is airborne, the at least one processor is configured to detect the wireless device is airborne further based on a velocity or an acceleration of the wireless device exceeding a velocity threshold or an acceleration threshold.
8 . The apparatus of claim 1 , wherein the at least one processor is further configured to:
calculate a Doppler estimation for one or more received signals; and
determine whether the Doppler estimation exceeds a Doppler threshold, wherein detection of the wireless device being airborne is further based on the Doppler estimation exceeding the Doppler threshold.
9 . The apparatus of claim 1 , wherein detection of the wireless device being airborne is further based on the wireless device being within a threshold distance of an airport.
10 . The apparatus of claim 1 , wherein the wireless device is located on a cargo of an aircraft, and wherein the wireless device is used for tracking a location of the cargo.
11 . The apparatus of claim 1 , wherein detection of the wireless device is airborne is further based on the wireless device being scheduled to be airborne within a threshold time period.
12 . The apparatus of claim 1 , wherein the wireless device is a tracking device.
13 . A method of wireless communication at a wireless device, comprising:
detecting the wireless device is airborne based on at least one of a sonic wave from an aircraft engine or an aircraft transponder signal;
disabling a transmitter of the wireless device based on detection of the wireless device being airborne;
detecting the wireless device is not airborne after the detection of the wireless device being airborne; and
enabling the transmitter based on detection of the wireless device being not airborne.
14 . The method of claim 13 , further comprising:
transmitting, via the transmitter, first information indicative of at least one location of the wireless device, wherein the first information is transmitted prior to disablement of the transmitter.
15 . The method of claim 13 , wherein detection of the wireless device being airborne is further based on a rate of pressure change exceeding a pressure change threshold.
16 . The method of claim 15 , further comprising:
estimating the rate of pressure change using a pressure sensor.
17 . The method of claim 13 , wherein detection of the wireless device being airborne is based on the sonic wave from the aircraft engine.
18 . The method of claim 13 , wherein detection of the wireless device being airborne is based on the aircraft transponder signal.
19 . The method of claim 13 , wherein detecting the wireless device is airborne comprises detecting the wireless device is airborne further based on a velocity or an acceleration of the wireless device exceeding a velocity threshold or an acceleration threshold.
20 . The method of claim 13 , further comprising:
calculating a Doppler estimation for one or more received signals; and
determining whether the Doppler estimation exceeds a Doppler threshold, wherein detection of the wireless device being airborne is further based on the Doppler estimation exceeding the Doppler threshold.
21 . The method of claim 13 , wherein the wireless device is located on a cargo of an aircraft, and wherein the wireless device is used for tracking a location of the cargo.
22 . The method of claim 13 , wherein the wireless device is detected to be airborne if the wireless device is scheduled to be airborne within a threshold time period.
23 . An apparatus for wireless communication at a wireless device, comprising:
means for detecting the wireless device is airborne based on at least one of a sonic wave from an aircraft engine or an aircraft transponder signal;
means for disabling a transmitter of the wireless device based on detection of the wireless device being airborne;
means for detecting the wireless device is not airborne after the detection of the wireless device being airborne; and
means for enabling the transmitter based on detection of the wireless device being not airborne.
24 . A non-transitory computer-readable medium storing computer executable code at a wireless device, the code when executed by a processor causes the processor to:
detect the wireless device is airborne based on at least one of a sonic wave from an aircraft engine or an aircraft transponder signal;
disable a transmitter of the wireless device based on detection of the wireless device being airborne;
detect the wireless device is not airborne after the detection of the wireless device being airborne; and
enable the transmitter based on detection of the wireless device being not airborne.