Downlink reception in multiple transmission and reception points
A wireless device may receive first downlink control information (DCI) associated with a first control resource set (coreset) pool index. The first DCI may trigger transmission of a reference signal. The wireless device may receive a second DCI associated with a second coreset pool index. The second DCI may schedule a downlink signal with a transmission configuration indicator (TCI) state. Based on the first coreset pool index and the second coreset pool index being the same, the wireless device may receive the reference signal with the TCI state.
1. A method comprising:
receiving, by a wireless device, first downlink control information (DCI) associated with a first control resource set (coreset) pool index, the first DCI triggering transmission of a reference signal;
receiving a second DCI associated with a second coreset pool index, the second DCI scheduling a downlink signal with a transmission configuration indicator (TCI) state; and
based on the first coreset pool index and the second coreset pool index being the same, receiving the reference signal with the TCI state.
2. The method of claim 1 , wherein the reference signal is an aperiodic channel state information reference signal.
3. The method of claim 1 , wherein a scheduling offset between the first DCI and the reference signal is less than a beam switch timing threshold.
4. The method of claim 1 , determining that a scheduling offset between the first DCI and the reference signal is less than a beam switch timing threshold.
5. The method of claim 1 , further comprising receiving, via a first coreset with the first coreset pool index, the first DCI.
6. The method of claim 5 , further comprising receiving, via a second coreset with the second coreset pool index, the second DCI.
7. The method of claim 1 , wherein the reference signal and the downlink signal overlap in time.
8. The method of claim 7 , wherein the reference signal and the downlink signal overlapping in time comprises the reference signal and the downlink signal overlapping in at least one symbol.
9. The method of claim 1 , further comprising receiving, from a base station, one or more configuration parameters indicating one or more trigger states of transmission of the reference signal.
10. The method of claim 1 , further comprising:
receiving a third DCI associated with a third coreset pool index, the third DCI triggering transmission of a second reference signal;
receiving a fourth DCI associated with a fourth coreset pool index, the fourth DCI scheduling a second downlink signal with a second TCI state; and
based on the third coreset pool index and the fourth coreset pool index being different, dropping at least one of:
the second reference signal; or
the second downlink signal.
11. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive first downlink control information (DCI) associated with a first control resource set (coreset) pool index, the first DCI triggering transmission of a reference signal;
receive a second DCI associated with a second coreset pool index, the second DCI scheduling a downlink signal with a transmission configuration indicator (TCI) state; and
based on the first coreset pool index and the second coreset pool index being the same, receive the reference signal with the TCI state.
12. The wireless device of claim 11 , wherein the reference signal is an aperiodic channel state information reference signal.
13. The wireless device of claim 11 , wherein a scheduling offset between the first DCI and the reference signal is less than a beam switch timing threshold.
14. The wireless device of claim 11 , wherein the instructions further cause the wireless device to determine that a scheduling offset between the first DCI and the reference signal is less than a beam switch timing threshold.
15. The wireless device of claim 11 , wherein the instructions further cause the wireless device to receive, via a first coreset with the first coreset pool index, the first DCI.
16. The wireless device of claim 15 , wherein the instructions further cause the wireless device to receive, via a second coreset with the second coreset pool index, the second DCI.
17. The wireless device of claim 11 , wherein the reference signal and the downlink signal overlap in time.
18. The wireless device of claim 11 , wherein the instructions further cause the wireless device to receive, from a base station, one or more configuration parameters indicating one or more trigger states of transmission of the reference signal.
19. The wireless device of claim 11 , wherein the instructions further cause the wireless device to, based on the first coreset pool index and the second coreset pool index being different, drop at least one of:
the reference signal; or
the downlink signal.
20. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to:
receive first downlink control information (DCI) associated with a first control resource set (coreset) pool index, the first DCI triggering transmission of a reference signal;
receive a second DCI associated with a second coreset pool index, the second DCI scheduling a downlink signal with a transmission configuration indicator (TCI) state; and
based on the first coreset pool index and the second coreset pool index being the same, receive the reference signal with the TCI state.