Digital signal reception
A wireless device and/or a base station may select one or more beams among multiple beams for transmission and/or reception of signals. At least one transmission control indicator (TCI) state of at least two TCI states may be used to receive a downlink signal based on a scheduling offset and the downlink signal overlapping in time with a physical downlink channel transmission.
1. A method comprising:
receiving, by a wireless device, downlink control information (DCI) associated with a downlink signal; and
receiving, using at least one transmission configuration indicator (TCI) state of at least two TCI states, the downlink signal, wherein using the at least one TCI state is based on:
a scheduling offset, between a last symbol of the DCI and a first symbol of the downlink signal, being less than a threshold; and
the downlink signal overlapping in time with a physical downlink channel transmission that is indicated with the at least two TCI states.
2. The method of claim 1 , wherein:
the at least two TCI states comprise a first TCI state and a second TCI state, and
the method further comprises receiving one or more configuration parameters that indicate the first TCI state and the second TCI state.
3. The method of claim 1 , further comprising:
receiving one or more configuration parameters that indicate one or more aperiodic channel state information (CSI) trigger states, wherein the receiving the downlink signal is based on the one or more aperiodic CSI trigger states.
4. The method of claim 1 , wherein the DCI comprises a TCI field that indicates the at least two TCI states.
5. The method of claim 1 , wherein the downlink signal comprises an aperiodic channel state information reference signal (CSI-RS).
6. The method of claim 1 , wherein the downlink signal comprises a physical downlink shared channel (PDSCH) transmission.
7. The method of claim 1 , wherein the physical downlink channel transmission comprises a scheduled physical downlink shared channel (PDSCH) transmission.
8. 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 downlink control information (DCI) associated with a downlink signal; and
receive, using at least one transmission configuration indicator (TCI) state of at least two TCI states, the downlink signal, wherein using the at least one TCI state is based on:
a scheduling offset, between a last symbol of the DCI and a first symbol of the downlink signal, being less than a threshold; and
the downlink signal overlapping in time with a physical downlink channel transmission that is indicated with the at least two TCI states.
9. The wireless device of claim 8 , wherein:
the at least two TCI states comprise a first TCI state and a second TCI state, and
the instructions, when executed by the one or more processors, cause the wireless device to receive one or more configuration parameters that indicate the first TCI state and the second TCI state.
10. The wireless device of claim 8 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
receive one or more configuration parameters that indicate one or more aperiodic channel state information (CSI) trigger states; and
receive the downlink signal based on the one or more aperiodic CSI trigger states.
11. The wireless device of claim 8 , wherein the DCI comprises a TCI field that indicates the at least two TCI states.
12. The wireless device of claim 8 , wherein the downlink signal comprises an aperiodic channel state information reference signal (CSI-RS).
13. The wireless device of claim 8 , wherein the downlink signal comprises a physical downlink shared channel (PDSCH) transmission.
14. The wireless device of claim 8 , wherein the physical downlink channel transmission comprises a scheduled physical downlink shared channel (PDSCH) transmission.
15. A system comprising:
a wireless device; and
a base station,
wherein the base station is configured to:
transmit, to the wireless device, downlink control information (DCI) associated with a downlink signal; and
wherein the wireless device is configured to:
receive, from the base station, using at least one transmission configuration indicator (TCI) state of at least two TCI states, the downlink signal, wherein using the at least one TCI state is based on:
a scheduling offset, between a last symbol of the DCI and a first symbol of the downlink signal, being less than a threshold; and
the downlink signal overlapping in time with a physical downlink channel transmission that is indicated with the at least two TCI states.
16. The system of claim 15 , wherein:
the at least two TCI states comprise a first TCI state and a second TCI state, and
the wireless device is configured to receive one or more configuration parameters that indicate the first TCI state and the second TCI state.
17. The system of claim 15 , wherein:
the base station is configured to transmit one or more configuration parameters that indicate one or more aperiodic channel state information (CSI) trigger states, and
the wireless device is configured to receive the downlink signal based on the one or more aperiodic CSI trigger states.
18. The system of claim 15 , wherein the DCI comprises a TCI field that indicates the at least two TCI states.
19. The system of claim 15 , wherein the downlink signal comprises an aperiodic channel state information reference signal (CSI-RS).
20. The system of claim 15 , wherein the downlink signal comprises a physical downlink shared channel (PDSCH) transmission.
21. The system of claim 15 , wherein the physical downlink channel transmission comprises a scheduled physical downlink shared channel (PDSCH) transmission.
22. A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to:
receive downlink control information (DCI) associated with a downlink signal; and
receive, using at least one transmission configuration indicator (TCI) state of at least two TCI states, the downlink signal, wherein using the at least one TCI state is based on:
a scheduling offset, between a last symbol of the DCI and a first symbol of the downlink signal, being less than a threshold; and
the downlink signal overlapping in time with a physical downlink channel transmission that is indicated with the at least two TCI states.
23. The non-transitory computer-readable medium of claim 22 , wherein:
the at least two TCI states comprise a first TCI state and a second TCI state, and
the instructions further configure the wireless device to receive one or more configuration parameters that indicate the first TCI state and the second TCI state.
24. The non-transitory computer-readable medium of claim 22 , wherein the instructions further configure the wireless device to:
receive one or more configuration parameters that indicate one or more aperiodic channel state information (CSI) trigger states; and
receive the downlink signal based on the one or more aperiodic CSI trigger states.
25. The non-transitory computer-readable medium of claim 22 , wherein the DCI comprises a TCI field that indicates the at least two TCI states.
26. The non-transitory computer-readable medium of claim 22 , wherein the downlink signal comprises an aperiodic channel state information reference signal (CSI-RS).
27. The non-transitory computer-readable medium of claim 22 , wherein the downlink signal comprises a physical downlink shared channel (PDSCH) transmission.
28. The non-transitory computer-readable medium of claim 22 , wherein the physical downlink channel transmission comprises a scheduled physical downlink shared channel (PDSCH) transmission.