Base station and user equipment

1. A base station for a mobile telecommunications system, the base station comprising:

circuitry configured to

communicate with at least one user equipment; and

transmit, to the at least one user equipment, a multi-level pre-emption indicator for indicating, as first level information, first information about resources used for at least one short-data transmission within a transmission region which may contain at least one long-data transmission of the at least one user equipment, and, as second level information, second information about the resources used for the short-data transmission, wherein

the second level information indicates whether to ignore the first level information, and

the second information indicates the resources used more accurately than the first information indicates the resources used.

2. The base station of claim 1 , wherein the transmission region is a reference downlink region.

3. The base station of claim 2 , wherein the first level information indicates the resources used based on a first resource grid dividing the reference downlink region into first resource regions.

4. The base station of claim 3 , wherein the second level information indicates the resources used within the indicated first resource regions.

5. The base station of claim 4 , wherein the second level information indicates the resources used based on a second resource grid dividing the indicated first resource regions into second resource regions, the second resource regions being smaller than the first resource regions.

6. The base station of claim 4 , wherein

a second resource grid is included in the multi-level pre-emption indicator, or

a configuration of a second resource grid is radio resource control configured.

7. The base station of claim 1 , wherein

the first level information indicates resources used being logically associated with each other within the transmission region, and

the second level information refers to the logically associated resources.

8. The base station of claim 1 , wherein the first level information or the second level information includes a two-dimensional bitmap.

9. The base station of claim 1 , wherein the first level information or the second level information is included in group common downlink control information.

10. The base station of claim 9 , wherein the first level information and the second level information are included in the same group common downlink control information.

11. The base station of claim 1 , wherein

the first level information and the second level information are transmitted with different periodicity, and

the second level information includes information about a time interval associated with the first level information.

12. The base station of claim 1 , wherein the second level information is included in user equipment specific downlink control information.

13. The base station of claim 1 , wherein the second level information is included in each carrier of a carrier aggregation operation.

14. The base station of claim 1 , wherein the first level information is transmitted in a primary carrier and the second level information is transmitted in a secondary carrier.

15. The base station of claim 1 , wherein the second level information is transmitted for different bandwidth parts.

16. The base station of claim 15 , wherein a same first level information is associated with the different bandwidth parts.

17. A user equipment for a mobile telecommunications system, the user equipment comprising:

circuitry configured to

communicate with at least one base station;

receive, from the at least one base station, a multi-level pre-emption indicator indicating, as first level information, first information about resources used for at least one short data transmission within a transmission region which may contain at least one long data transmission of the user equipment, and, as second level information, second information about the resources used for the short-data transmission, wherein

the second level information indicates whether to ignore the first level information, and

the second information indicates the resources used more accurately than the first information indicates the resources used.

18. The user equipment of claim 17 , wherein the transmission region is a reference downlink region.

19. The user equipment of claim 18 , wherein the first level information indicates the resources used based on a first resource grid dividing the reference downlink region into first resource regions.

20. A base station for a mobile telecommunications system, the base station comprising:

circuitry configured to

communicate with at least one user equipment; and

transmit, to the at least one user equipment, a multi-level pre-emption indicator for indicating, as first level information, first information about resources used for at least one short-data transmission within a transmission region which may contain at least one long-data transmission of the at least one user equipment, and, as second level information, second information about the resources used for the short-data transmission, wherein

the second information indicates the resources used more accurately than the first information indicates the resources used

the transmission region is a reference downlink region,

the first level information indicates the resources used based on a first resource grid dividing the reference downlink region into first resource regions, and

the second level information indicates the resources used within the indicated first resource regions.