Multi-interface transponder device-altering power modes

1. A multi-interface transponder (MIT) device, comprising:

a first radio comprising circuitry supporting at least a first radio access technology (RAT);

a second radio comprising circuitry supporting at least a second RAT; and

one or more processors coupled to the first radio and the second radio;

wherein the one or more processors are configured to cause the MIT device to:

receive, while operating in a low power mode, an indication of a transition in transportation mode from a companion device, wherein the second radio is disabled in the low power mode;

transition, based on the indication, to a higher power mode, wherein the second radio is enabled in the higher power mode;

broadcast location beacons at a first transmission rate and first transmission power;

increase, in response to detection of a trigger condition, the first transmission rate to a second transmission rate; and

broadcast location beacons at the second transmission rate and first transmission power.

2. The MIT device of claim 1 ,

wherein the trigger condition comprises receipt of an indication that a companion device has moved more than a threshold distance from the MIT device.

3. The MIT device of claim 2 ,

wherein the indication is received via the first radio; and

wherein location beacons are transmitted via the second radio.

4. The MIT device of claim 2 ,

wherein the threshold distance is approximately 1 meter.

5. The MIT device of claim 1 ,

wherein the one or more processors are further configured to cause the MIT device to:

receive, from a companion device, an indication to increase transmission power to a second transmission power, wherein the indication is based, at least in part, on medium congestion; and

transmit, to the companion device, location beacons at the second transmission power.

6. The MIT device of claim 1 ,

wherein the one or more processors are further configured to cause the MIT device to:

receive, from the companion device, an indication of an end of a transition in a transportation mode; and

transition, in response to the indication, back to the low power mode.

7. The MIT of claim 1 ,

wherein the trigger condition comprises detection of a transition in a mode of transportation, wherein the transition comprises a stopping of the mode of transportation, and wherein the trigger condition is based on a change in velocity of the MIT device.

8. An apparatus comprising:

a memory; and

at least one processor in communication with the memory;

wherein the at least one processor is configured to:

receive, while operating in a low power mode, an indication of a transition in transportation mode from a companion device, wherein the indication is received via a lower power radio in communication with the at least one processor, and wherein a higher power radio in communication with the at least one processor is disabled in the low power mode;

generate instructions to transition, based on the indication, to a higher power mode, wherein the higher power radio is enabled in the higher power mode;

generate instructions to broadcast location beacons at a first transmission rate;

increase, in response to detection of a trigger condition, the first transmission rate to a second transmission rate; and

broadcast location beacons at the second transmission rate.

9. The apparatus of claim 8 ,

wherein the lower power radio is at least one of an ultra-low power radio, a low power radio, or a Bluetooth radio, and wherein the higher power radio comprises at least one of a Bluetooth radio, a wideband radio, or an ultra-wideband radio.

10. The apparatus of claim 9 ,

wherein the lower power radio is deactivated in the higher power mode.

11. The apparatus of claim 8 ,

wherein the transition in transportation mode comprises at least one of:

detection of a known transportation transition point; or

detection of a known transportation destination.

12. The apparatus of claim 8 ,

wherein the at least one processor is further configured to:

receive, from a companion device, an indication of an end of the trigger condition; and

in response to the indication, generate instructions to broadcast location beacons at the first transmission rate.

13. The apparatus of claim 8 ,

wherein the trigger condition comprises as least one of:

a transition in transportation mode;

a companion device moving more than a threshold distance from the apparatus; or

detection of a change in velocity of the apparatus.

14. The apparatus of claim 13 ,

wherein the threshold distance is approximately 1 meter.

15. A non-transitory computer readable memory medium storing program instructions executable by processing circuitry of a multi-interface transponder (MIT) device to:

receive, while the MIT device operates in a low power mode, an indication of a transition in transportation mode from a companion device, wherein the indication is received via a lower power radio of the MIT device, and wherein a higher power radio of the MIT device is disabled in the low power mode;

transition, based on the indication, to a higher power mode, wherein the higher power radio is enabled in the higher power mode

broadcast, to one or more neighboring wireless devices, location beacons at a first transmission rate;

increase, in response to a trigger indication, the first transmission rate to a second transmission rate; and

transmit, to the one or more neighboring wireless devices, location beacons at the second transmission rate.

16. The non-transitory computer readable memory medium of claim 15 ,

wherein the trigger indication comprises as least one of:

detection of a transition in transportation mode;

detection of a companion device moving more than a threshold distance from the MIT, wherein the companion device is included in the one or more neighboring wireless devices; or

detection of a change in velocity of the MIT.

17. The non-transitory computer readable memory medium of claim 16 ,

wherein the threshold distance is approximately 1 meter.

18. The non-transitory computer readable memory medium of claim 16 ,

wherein, to detect the transition in transportation mode, the program instructions are further executable to perform at least one of:

receiving an indication of the transition from the companion device;

detecting arrival at a known transportation transition point; or

detecting arrival at a known transportation destination.

19. The non-transitory computer readable memory medium of claim 15 ,

wherein the program instructions are further executable to:

receive, from a companion device, an indication to increase transmission power to a second transmission power, wherein the indication is based, at least in part, on medium congestion, and wherein the companion device is included in the one or more neighboring wireless devices; and

transmit, to the companion device, location beacons at the second transmission power.

20. The non-transitory computer readable memory medium of claim 15 ,

wherein the program instructions are further executable to:

receive, from a companion device, an indication of an end of a trigger condition, wherein the companion device is included in the one or more neighboring wireless devices; and

in response to the indication, generate instructions to broadcast location beacons at the first transmission rate.