Beam activation and determination in wireless networks
Beam determination and beam activation may be used in wireless communications. An initial (e.g., default) TCI state pool, of a plurality of TCI state pools, may be used to receive one or more messages indicating a second TCI state pool for communicating signals between a wireless device and a base station. The one or more messages may comprise an indication of a TCI state pair (e.g., an uplink TCI state and a downlink TCI state) of the second TCI state pool.
1. A method comprising:
receiving, by a wireless device, a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one or more TCI codepoints, wherein at least one TCI codepoint, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
receiving downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
receiving, based on the downlink TCI state, at least one downlink signal; and
sending, based on the uplink TCI state, at least one uplink signal.
2. The method of claim 1 , further comprising:
receiving, by the wireless device, configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells;
determining, for a cell of the plurality of cells and based on the configuration parameters, a first TCI state list, as a default TCI state list, from the plurality of TCI state lists; and
receiving, based on the default TCI state list, one or more downlink signals via the cell.
3. The method of claim 2 , wherein the configuration parameters indicate a priority value for each of the plurality of TCI state lists, and wherein the determining the first TCI state list comprises:
determining the first TCI state list, from the plurality of TCI state lists, based on the priority value of the first TCI state list.
4. The method of claim 2 , wherein the plurality of TCI state lists comprise one or more common TCI state lists, and wherein each TCI state of the one or more common TCI state lists is configured for at least one of:
transmission of multiple uplink signals; or
reception of multiple downlink signals.
5. The method of claim 1 , wherein the at least one uplink signal comprises at least one of:
a physical uplink control channel (PUCCH) transmission;
a physical uplink shared channel (PUSCH) transmission;
a physical random access channel (PRACH) transmission; or
a sounding reference signal (SRS) transmission.
6. The method of claim 1 , wherein the at least one downlink signal comprises at least one of:
a physical downlink control channel (PDCCH) transmission;
a physical downlink shared channel (PDSCH) transmission;
a synchronization signal block (SSB) transmission; or
a channel state information reference signal (CSI-RS) transmission.
7. The method of claim 1 , wherein:
the command comprises a first field indicating a plurality of TCI state lists, wherein the plurality of TCI state lists comprise a downlink TCI state list and an uplink TCI state list; and
the command comprises a second field activating the TCI states comprising the downlink TCI state and the uplink TCI state.
8. The method of claim 7 , wherein the downlink TCI state list comprises the downlink TCI state, and wherein the uplink TCI state list comprises the uplink TCI state.
9. The method of claim 1 , further comprising:
receiving, by the wireless device, configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
10. The method of claim 1 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
11. The method of claim 1 , wherein the command comprises a medium access control control element (MAC CE).
12. A method comprising:
sending, by a base station, a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one of more TCI codepoints, wherein at least one TCI code point, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
sending downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
sending, based on the downlink TCI state, at least one downlink signal; and
receiving, based on the uplink TCI state, at least one uplink signal.
13. The method of claim 12 , further comprising:
sending, by the base station, configuration parameters of a plurality of TCI state lists associated with a plurality of cells; and
sending, based on a default TCI state list, at least one downlink signal.
14. The method of claim 12 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
15. The method of claim 12 , further comprising:
sending, by the base station, configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
16. The method of claim 12 , wherein the command comprises a medium access control control element (MAC CE).
17. The method of claim 12 , wherein the downlink TCI state and the uplink TCI state are associated with a same TCI index.
18. The method of claim 12 , further comprising:
sending, by the base station, configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells.
19. The method of claim 18 , wherein the plurality of TCI state lists comprise one or more common TCI state lists, and wherein each TCI state of the one or more common TCI state lists is configured for at least one of:
reception of multiple uplink signals; or
transmission of multiple downlink signals.
20. The method of claim 12 , wherein:
the command comprises a first field indicating a plurality of TCI state lists, wherein the plurality of TCI state lists comprise a downlink TCI state list and an uplink TCI state list; and
the command comprises a second field activating the TCI states comprising the downlink TCI state and the uplink TCI state.
21. The method of claim 20 , wherein the downlink TCI state list comprises the downlink TCI state, and wherein the uplink TCI state list comprises the uplink TCI state.
22. 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 a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one or more TCI codepoints, wherein at least one TCI codepoint, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
receive downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
receive, based on the downlink TCI state, at least one downlink signal; and
send, based on the uplink TCI state, at least one uplink signal.
23. The wireless device of claim 22 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
receive configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells;
determine, for a cell of the plurality of cells and based on the configuration parameters, a first TCI state list, as a default TCI state list, from the plurality of TCI state lists; and
receive, based on the default TCI state list, one or more downlink signals via the cell.
24. The wireless device of claim 23 , wherein the configuration parameters indicate a priority value for each of the plurality of TCI state lists, and wherein the instructions, when executed by the one or more processors, further cause the wireless device to determine the first TCI state list by causing:
determining the first TCI state list, from the plurality of TCI state lists, based on the priority value of the first TCI state list.
25. The wireless device of claim 23 , wherein the plurality of TCI state lists comprise one or more common TCI state lists, and wherein each TCI state of the one or more common TCI state lists is configured for at least one of:
transmission of multiple uplink signals; or
reception of multiple downlink signals.
26. The wireless device of claim 22 , wherein the at least one uplink signal comprises at least one of:
a physical uplink control channel (PUCCH) transmission;
a physical uplink shared channel (PUSCH) transmission;
a physical random access channel (PRACH) transmission; or
a sounding reference signal (SRS) transmission.
27. The wireless device of claim 22 , wherein the at least one downlink signal comprises at least one of:
a physical downlink control channel (PDCCH) transmission;
a physical downlink shared channel (PDSCH) transmission;
a synchronization signal block (SSB) transmission; or
a channel state information reference signal (CSI-RS) transmission.
28. The wireless device of claim 22 , wherein:
the command comprises a first field indicating a plurality of TCI state lists, wherein the plurality of TCI state lists comprise a downlink TCI state list and an uplink TCI state list; and
the command comprises a second field activating the TCI states comprising the downlink TCI state and the uplink TCI state.
29. The wireless device of claim 28 , wherein the downlink TCI state list comprises the downlink TCI state, and wherein the uplink TCI state list comprises the uplink TCI state.
30. The wireless device of claim 22 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
receive configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
31. The wireless device of claim 22 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
32. The wireless device of claim 22 , wherein the command comprises a medium access control control element (MAC CE).
33. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
send, to a wireless device, a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one of more TCI codepoints, wherein at least one TCI code point, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
send downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
send, based on the downlink TCI state, at least one downlink signal; and
receive, based on the uplink TCI state, at least one uplink signal.
34. The base station of claim 33 , wherein the instructions, when executed by the one or more processors, further cause the base station to:
send configuration parameters of a plurality of TCI state lists associated with a plurality of cells; and
send, based on a default TCI state list, at least one downlink signal.
35. The base station of claim 33 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
36. The base station of claim 33 , wherein the instructions, when executed by the one or more processors, further cause the base station to:
send configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
37. The base station of claim 33 , wherein the command comprises a medium access control control element (MAC CE).
38. The base station of claim 33 , wherein the downlink TCI state and the uplink TCI state are associated with a same TCI index.
39. The base station of claim 33 , wherein the instructions, when executed by the one or more processors, further cause the base station to:
send configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells.
40. The base station of claim 39 , wherein the plurality of TCI state lists comprise one or more common TCI state lists, and wherein each TCI state of the one or more common TCI state lists is configured for at least one of:
reception of multiple uplink signals; or
transmission of multiple downlink signals.
41. The base station of claim 33 , wherein:
the command comprises a first field indicating a plurality of TCI state lists, wherein the plurality of TCI state lists comprise a downlink TCI state list and an uplink TCI state list; and
the command comprises a second field activating the TCI states comprising the downlink TCI state and the uplink TCI state.
42. The base station of claim 41 , wherein the downlink TCI state list comprises the downlink TCI state, and wherein the uplink TCI state list comprises the uplink TCI state.
43. One or more non-transitory computer readable media storing instructions that, when executed cause:
receiving a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one or more TCI codepoints, wherein at least one TCI codepoint, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
receiving downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
receiving, based on the downlink TCI state, at least one downlink signal; and
sending, based on the uplink TCI state, at least one uplink signal.
44. The one or more non-transitory computer readable media of claim 43 , wherein the instructions, when executed, further cause:
receiving configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells;
determining, for a cell of the plurality of cells and based on the configuration parameters, a first TCI state list, as a default TCI state list, from the plurality of TCI state lists; and
receiving, based on the default TCI state list, one or more downlink signals via the cell.
45. The one or more non-transitory computer readable media of claim 44 , wherein the configuration parameters indicate a priority value for each of the plurality of TCI state lists, and wherein the instructions, when executed, further cause determining the first TCI state list by causing:
determining the first TCI state list, from the plurality of TCI state lists, based on the priority value of the first TCI state list.
46. The one or more non-transitory computer readable media of claim 44 , wherein the plurality of TCI state lists comprise one or more common TCI state lists, and wherein each TCI state of the one or more common TCI state lists is configured for at least one of:
transmission of multiple uplink signals; or
reception of multiple downlink signals.
47. The one or more non-transitory computer readable media of claim 43 , wherein the instructions, when executed, further cause:
receiving configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
48. The one or more non-transitory computer readable media of claim 43 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
49. The one or more non-transitory computer readable media of claim 43 , wherein the command comprises a medium access control control element (MAC CE).
50. One or more non-transitory computer readable media storing instructions that, when executed cause:
sending a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one of more TCI codepoints, wherein at least one TCI code point, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
sending downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
sending, based on the downlink TCI state, at least one downlink signal; and
receiving, based on the uplink TCI state, at least one uplink signal.
51. The one or more non-transitory computer readable media of claim 50 , wherein the instructions, when executed, further cause:
sending configuration parameters of a plurality of TCI state lists associated with a plurality of cells; and
sending, based on a default TCI state list, at least one downlink signal.
52. The one or more non-transitory computer readable media of claim 50 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
53. The one or more non-transitory computer readable media of claim 50 , wherein the instructions, when executed, further cause:
sending configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
54. The one or more non-transitory computer readable media of claim 50 , wherein the command comprises a medium access control control element (MAC CE).
55. The one or more non-transitory computer readable media of claim 50 , wherein the instructions, when executed, further cause:
sending configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells.
56. A system comprising:
a wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to:
receive a command indicating a plurality of transmission configuration indicator (TCI) states mapped to one or more TCI codepoints, wherein at least one TCI codepoint, of the one or more TCI codepoints, indicates:
a downlink TCI state of a downlink TCI state list; and
an uplink TCI state of an uplink TCI state list;
receive downlink control information (DCI) indicating a TCI codepoint of the at least one TCI codepoint;
receive, based on the downlink TCI state, at least one downlink signal; and
send, based on the uplink TCI state, at least one uplink signal; and
a base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to:
send the DCI indicating the TCI codepoint of the at least one TCI codepoint.
57. The system of claim 56 , wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
receive configuration parameters of a plurality of TCI state lists comprising the uplink TCI state list and the downlink TCI state list, wherein the plurality of TCI state lists are associated with a plurality of cells;
determine, for a cell of the plurality of cells and based on the configuration parameters, a first TCI state list, as a default TCI state list, from the plurality of TCI state lists; and
receive, based on the default TCI state list, one or more downlink signals via the cell.
58. The system of claim 57 , wherein the configuration parameters indicate a priority value for each of the plurality of TCI state lists, and wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
determine the first TCI state list, from the plurality of TCI state lists, based on the priority value of the first TCI state list.
59. The system of claim 57 , wherein the plurality of TCI state lists comprise one or more common TCI state lists, and wherein each TCI state of the one or more common TCI state lists is configured for at least one of:
transmission of multiple uplink signals; or
reception of multiple downlink signals.
60. The system of claim 56 , wherein the instructions stored in the memory of the wireless device, when executed by the one or more processors of the wireless device, cause the wireless device to:
receive configuration parameters of a plurality of TCI state lists, wherein the DCI further comprises a bitfield, and wherein the bitfield comprises a codepoint indicating a TCI state list of the plurality of TCI state lists.
61. The system of claim 56 , wherein the DCI further comprises a bitfield, and wherein the TCI codepoint corresponds to a value of the bitfield.
62. The system of claim 56 , wherein the command comprises a medium access control control element (MAC CE).