Methods, devices, and apparatuses for beam management
Wireless communications are described. A wireless device and/or a base station may determine/select one or more beams for transmission of signals (e.g., sounding reference signals, SRSs) in one or more cells. The wireless device and/or the base station may determine/select a beam based on one or more of: cell indicators of a first cell and/or a second cell, antenna panel indicators associated with SRS transmissions, priorities of SRS transmissions, resource set indicators corresponding to the SRS transmissions, and/or other information.
1. A method comprising:
causing uplink transmission by a wireless device via a first cell via a selected spatial transmission filter, wherein the selected spatial transmission filter is selected from:
a first spatial transmission filter of a first uplink transmission, by the wireless device, via a second cell, and
a second spatial transmission filter of a second uplink transmission, by the wireless device, via the second cell, wherein the first uplink transmission and the second uplink transmission overlap the uplink transmission; and
receiving, based on the uplink transmission, downlink control information (DCI).
2. The method of claim 1 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission collectively comprise sounding reference signals (SRSs).
3. The method of claim 1 , wherein the DCI is configured to schedule a third uplink transmission.
4. The method of claim 1 , wherein the uplink transmission is for estimating a channel.
5. The method of claim 1 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission overlap in a time duration, wherein the time duration comprises at least one of:
a symbol;
a slot;
a transmission time interval;
a subframe; or
a frame.
6. The method of claim 1 , wherein the selected spatial transmission filter is selected based on at least one of:
a first cell index of the first cell being greater than a second cell index of the second cell; or
the first cell index of the first cell being less than the second cell index of the second cell.
7. The method of claim 1 , wherein:
the first uplink transmission is associated with a first antenna panel, wherein the first antenna panel is indicated by a first antenna panel index;
the second uplink transmission is associated with a second antenna panel, wherein the second antenna panel is indicated by a second antenna panel index; and
the causing the uplink transmission via the selected spatial transmission filter is based on the first antenna panel index and the second antenna panel index.
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:
perform uplink transmission via a first cell via a selected spatial transmission filter, wherein the selected spatial transmission filter is selected from:
a first spatial transmission filter of a first uplink transmission, by the wireless device, via a second cell, and
a second spatial transmission filter of a second uplink transmission, by the wireless device, via the second cell, wherein the first uplink transmission and the second uplink transmission overlap the uplink transmission; and
receive, based on the uplink transmission, downlink control information (DCI).
9. The wireless device of claim 8 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission collectively comprise sounding reference signals (SRSs).
10. The wireless device of claim 8 , wherein the DCI is configured to schedule a third uplink transmission.
11. The wireless device of claim 8 , wherein the uplink transmission is for estimating a channel.
12. The wireless device of claim 8 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission overlap in a time duration, wherein the time duration comprises at least one of:
a symbol;
a slot;
a transmission time interval;
a subframe; or
a frame.
13. The wireless device of claim 8 , wherein the selected spatial transmission filter is selected based on at least one of:
a first cell index of the first cell being greater than a second cell index of the second cell; or
the first cell index of the first cell being less than the second cell index of the second cell.
14. The wireless device of claim 8 , wherein:
the first uplink transmission is associated with a first antenna panel, wherein the first antenna panel is indicated by a first antenna panel index;
the second uplink transmission is associated with a second antenna panel, wherein the second antenna panel is indicated by a second antenna panel index; and
the instructions, when executed by the one or more processors, cause the wireless device to cause the uplink transmission, via the selected spatial transmission filter, based on the first antenna panel index and the second antenna panel index.
15. A method comprising:
receiving an uplink transmission from a wireless device via a first cell, wherein the uplink transmission is sent via a selected spatial transmission filter that is selected from:
a first spatial transmission filter of a first uplink transmission, from the wireless device, via a second cell, and
a second spatial transmission filter of a second uplink transmission, from the wireless device, via the second cell, wherein the first uplink transmission and the second uplink transmission overlap the uplink transmission; and
transmitting, based on receiving the uplink transmission, downlink control information (DCI).
16. The method of claim 15 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission collectively comprise sounding reference signals (SRSs).
17. The method of claim 15 , wherein the DCI is configured to schedule a third uplink transmission.
18. The method of claim 15 , wherein the uplink transmission is for estimating a channel.
19. The method of claim 15 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission overlap in a time duration, wherein the time duration comprises at least one of:
a symbol;
a slot;
a transmission time interval;
a subframe; or
a frame.
20. The method of claim 15 , wherein the selected spatial transmission filter is selected based on at least one of:
a first cell index of the first cell being greater than a second cell index of the second cell; or
the first cell index of the first cell being less than the second cell index of the second cell.
21. The method of claim 15 , wherein:
the first uplink transmission is associated with a first antenna panel, wherein the first antenna panel is indicated by a first antenna panel index;
the second uplink transmission is associated with a second antenna panel, wherein the second antenna panel is indicated by a second antenna panel index; and
the selected spatial transmission filter is selected based on the first antenna panel index and the second antenna panel index.
22. 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:
receive an uplink transmission from a wireless device via a first cell, wherein the uplink transmission is sent via a selected spatial transmission filter that is selected from:
a first spatial transmission filter of a first uplink transmission, from the wireless device, via a second cell, and
a second spatial transmission filter of a second uplink transmission, from the wireless device, via the second cell, wherein the first uplink transmission and the second uplink transmission overlap the uplink transmission; and
transmit, based on receiving the uplink transmission, downlink control information (DCI).
23. The base station of claim 22 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission collectively comprise sounding reference signals (SRSs).
24. The base station of claim 22 , wherein the DCI is configured to schedule a third uplink transmission.
25. The base station of claim 22 , wherein the uplink transmission is for estimating a channel.
26. The base station of claim 22 , wherein the uplink transmission, the first uplink transmission, and the second uplink transmission overlap in a time duration, wherein the time duration comprises at least one of:
a symbol;
a slot;
a transmission time interval;
a subframe; or
a frame.
27. The base station of claim 22 , wherein the selected spatial transmission filter is selected based on at least one of:
a first cell index of the first cell being greater than a second cell index of the second cell; or
the first cell index of the first cell being less than the second cell index of the second cell.
28. The base station of claim 22 , wherein:
the first uplink transmission is associated with a first antenna panel, wherein the first antenna panel is indicated by a first antenna panel index;
the second uplink transmission is associated with a second antenna panel, wherein the second antenna panel is indicated by a second antenna panel index; and
the selected spatial transmission filter is selected based on the first antenna panel index and the second antenna panel index.