Ambient internet of things (IoT) coexistence with electronic shelf label (ESL)

1 . A first device of a first wireless system for wireless communications, comprising:

at least one memory; and

at least one processor coupled to the at least one memory, the at least one processor configured to:

measure a signal strength of a first advertisement beacon from a second device of a second wireless system;

compare the signal strength of the first advertisement beacon to a threshold signal strength to determine that the signal strength exceeds the threshold signal strength;

determine, based on the determination that the signal strength exceeds the threshold signal strength, a delay period for the second wireless system based on an expected amount of time for an energy harvesting device associated with the first wireless system to transmit a response; and

output a second advertisement beacon for transmission based on the determined delay period.

2 . The first device of claim 1 , wherein the signal strength comprises at least one of a reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), or channel quality indicator (CQI).

3 . The first device of claim 1 , wherein the delay period comprises a time period between the first advertisement beacon from the second device and an uplink transmission by a third device of the second wireless system.

4 . The first device of claim 3 , wherein, to determine the delay period for the second wireless system, the at least one processor is configured to monitor for the uplink transmission by the third device.

5 . The first device of claim 1 , wherein the second wireless system comprises an electronic shelf label system.

6 . The first device of claim 1 , wherein the second advertisement beacon causes a fourth device of the first wireless system to transmit an uplink response message to the first device.

7 . The first device of claim 6 , wherein the uplink response message is transmitted during the delay period.

8 . The first device of claim 6 , wherein the delay period for the second wireless system is determined based on an expected delay between the second advertisement beacon and transmission of the uplink response message.

9 . The first device of claim 6 , wherein the second advertisement beacon is configured to energize the fourth device.

10 . The first device of claim 6 , wherein the second advertisement beacon is transmitted on a different band as compared to the uplink response message.

11 . A method for wireless communications by a first device of a first wireless system, comprising:

measuring a signal strength of a first advertisement beacon from a second device of a second wireless system;

comparing the signal strength of the first advertisement beacon to a threshold signal strength to determine that the signal strength exceeds the threshold signal strength;

determining, based on the determination that the signal strength exceeds the threshold signal strength, a delay period for the second wireless system based on an expected amount of time for an energy harvesting device associated with the first wireless system to transmit a response; and

outputting a second advertisement beacon for transmission based on the determined delay period.

12 . The method of claim 11 , wherein the signal strength comprises at least one of a reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), or channel quality indicator (CQI).

13 . The method of claim 11 , wherein the delay period comprises a time period between the first advertisement beacon from the second device and an uplink transmission by a third device of the second wireless system.

14 . The method of claim 13 , wherein determining the delay period for the second wireless system comprises monitoring for the uplink transmission by the third device.

15 . The method of claim 11 , wherein the second wireless system comprises an electronic shelf label system.

16 . The method of claim 11 , wherein the second advertisement beacon causes a fourth device of a first wireless system to transmit an uplink response message to the first device.

17 . The method of claim 16 , wherein the uplink response message is transmitted during the delay period.

18 . The method of claim 16 , wherein the delay period for the second wireless system is determined based on an expected delay between the second advertisement beacon and transmission of the uplink response message.

19 . The method of claim 16 , wherein the second advertisement beacon is configured to energize the fourth device.

20 . The method of claim 16 , wherein the second advertisement beacon is transmitted on a different band as compared to the uplink response message.