Systems and methods of determining a reporting configuration associated with a coverage level of a wireless device

1. A method performed by a wireless device in a wireless communication system, the method comprising:

obtaining information indicating a coverage level of the wireless device;

determining, from amongst different power headroom report mappings respectively associated with different coverage levels of the wireless device, the power headroom report mapping associated with the coverage level indicated by the obtained information, wherein:

each power headroom report mapping associates a set of reported values of power headroom to corresponding ranges of measured values of power headroom;

the power headroom report mappings differ from each other with respect to reporting ranges and reporting resolution of power headroom information;

at least two power headroom report mappings for different coverage levels include overlapping reporting ranges;

at least one reported value of power headroom is associated with different ranges of measured values of power headroom in different power headroom mappings; and

reporting the power headroom information using the determined power headroom report mapping.

2. The method of claim 1 , wherein the reporting includes:

generating an indication of the power headroom information using the determined reporting configuration; and

transmitting, to a network node in the wireless communication system, the indication of the power headroom information.

3. The method of claim 1 , further comprising transmitting, to a network node in the wireless communication system, an indication of the coverage level of the wireless device.

4. The method of claim 1 , wherein the obtaining includes determining the coverage level of the wireless device based on the information.

5. The method of claim 1 , further comprising receiving, from a network node in the wireless communication system, the information indicating the coverage level of the wireless device.

6. The method of claim 1 :

wherein the obtaining includes performing a measurement of a signal transmitted or received by the wireless device; and

wherein the information includes the signal measurement.

7. The method of claim 1 :

wherein the obtaining includes determining a number of repetitions used for random access transmissions by the wireless device based on a random access configuration of the wireless device; and

wherein the information includes the number of repetitions used for the random access transmissions.

8. The method of claim 1 , wherein the determining the reporting configuration includes receiving, from a network node in the wireless communication system, an indication of the different power headroom report mappings.

9. The method of claim 1 , wherein the information includes an indication that a network node serving the wireless device is using or supports the coverage level.

10. The method of claim 1 , wherein the information includes an indication that a network node serving the wireless device supports the different coverage levels.

11. The method of claim 1 , wherein the information includes a measurement of a signal transmitted or received by the wireless device.

12. The method of claim 1 , wherein the information includes a random access configuration associated with the wireless device performing random access transmissions to a network node.

13. The method of claim 1 , wherein the information includes a capability of the wireless device to support the different coverage levels.

14. The method of claim 1 , wherein the information includes an indication of the different coverage levels of the wireless device.

15. The method of claim 1 , wherein the determining the power headroom report mapping is based on predefined time periods associated with a measurement of a signal received by the wireless device from a network node.

16. The method of claim 1 , wherein the determining the power headroom report mapping is based on one or more resources associated with the different power headroom report mappings being available for use by the wireless device.

17. The method of claim 1 , wherein the determining the power headroom report mapping is based on data provided by a network node to assist the wireless device in the determining the power headroom report mapping.

18. The method of claim 1 , wherein the different coverage levels include one or more normal coverage levels and one or more enhanced coverage levels.

19. The method of claim 1 , wherein:

the wireless device is capable of operating as a Long Term Evolution (LTE) Category Narrowband 1 (LTE Cat NB1) device; and

the determined power headroom report mapping includes a power headroom report mapping for the LTE Cat NB1 device.

20. A wireless device in a wireless communication system, the wireless device comprising

processing circuitry;

memory containing instructions executable by the processing circuitry whereby the wireless device is operative to:

obtain information indicating a coverage level of the wireless device;

determine, from amongst different power headroom report mappings respectively associated with different coverage levels of the wireless device, the power headroom report mapping associated with the coverage level indicated by the obtained information, wherein:

each power headroom report mapping associates a set of reported values of power headroom to corresponding ranges of measured values of power headroom;

the power headroom report mappings differ from each other with respect to reporting ranges and reporting resolution of power headroom information;

at least two power headroom report mappings for different coverage levels include overlapping ranges of measured values of power headroom;

a same reported value of power headroom in different power headroom report mappings is associated with different ranges of measured values of power headroom; and

report power headroom information using the determined power headroom report mapping.