Sharing channel occupancy ratio information

1. A method comprising:

communicating, by a first base station central unit (BS-CU) with one or more wireless devices, packets via a first cell operating in an unlicensed spectrum;

receiving, by the first BS-CU from a first base station distributed unit (BS-DU), a channel occupancy ratio (CR) of the first cell, wherein the CR is for a plurality of time intervals and indicates a ratio of utilization, for transmissions by the first cell, of unlicensed channel resources; and

transmitting, by the first BS-CU to a second base station, the CR.

2. The method of claim 1 , wherein the first BS-CU communicates with the one or more wireless devices via the first BS-DU.

3. The method of claim 1 , wherein the CR is determined by the first BS-DU.

4. The method of claim 1 , wherein the first BS-CU and the first BS-DU are comprised by a first base station.

5. The method of claim 1 , wherein the second base station comprises a second BS-CU.

6. The method of claim 1 , further comprising receiving, by the first BS-CU from the first BS-DU, at least one of:

a received signal strength indicator (RSSI) of the first cell; or

a channel busy ratio (CBR).

7. The method of claim 6 , further comprising determining a combined resource information of the first cell, the combined resource information comprising the CR, the RSSI, and the CBR.

8. The method of claim 7 , further comprising transmitting the combined resource information of the first cell to the first BS-DU.

9. The method of claim 8 , wherein the first BS-DU assigns, based on the combined resource information, radio resources for a second wireless device.

10. The method of claim 1 , wherein the first BS-CU receives a second CR from the first BS-DU.

11. A first base station central unit (BS-CU) comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the BS-CU to perform operations comprising:

communicating, with one or more wireless devices, packets via a first cell operating in an unlicensed spectrum;

receiving, from a first base station distributed unit (BS-DU), a channel occupancy ratio (CR) of the first cell, wherein the CR is for a plurality of time intervals and indicates a ratio of utilization, for transmissions by the first cell, of unlicensed channel resources; and

transmitting, to a second base station, the CR.

12. The first BS-CU of claim 11 , wherein the first BS-CU communicates with the one or more wireless devices via the first BS-DU.

13. The first BS-CU of claim 11 , wherein the CR is determined by the first BS-DU.

14. The first BS-CU of claim 11 , wherein the first BS-CU and the first BS-DU are comprised by a first base station.

15. The first BS-CU of claim 11 , wherein the second base station comprises a second BS-CU.

16. The first BS-CU of claim 11 , wherein the operations further comprise receiving, by the first BS-CU from the first BS-DU, at least one of:

a received signal strength indicator (RSSI) of the first cell; or

a channel busy ratio (CBR).

17. The first BS-CU of claim 6 , wherein the operations further comprise determining a combined resource information of the first cell, the combined resource information comprising the CR, the RSSI, and the CBR.

18. The first BS-CU of claim 17 , wherein the operations further comprise transmitting the combined resource information of the first cell to the first BS-DU.

19. The first BS-CU of claim 18 , wherein the first BS-DU assigns, based on the combined resource information, radio resources for a second wireless device.

20. The first BS-CU of claim 11 , wherein the first BS-CU receives a second CR from the BS-DU.