Transmission and reception configuration and signaling
One or more transmission parameters for data transmission may be determined for wireless communications. A wireless device may determine transmission parameters for data transmission based on configuration associated with control signaling. For example, the transmission parameters (e.g., transmission beam, transmission power, etc.) may be determined based on a selected spatial relation, among multiple spatial relations, corresponding to a control channel.
1. A method comprising:
receiving, by a wireless device, downlink control information (DCI) scheduling an uplink transmission; and
based on an uplink resource, associated with a lowest resource index, corresponding to at least two spatial relations, sending the uplink transmission using a transmission power that is based on a reference signal indicated by a spatial relation, among the at least two spatial relations, associated with a lowest spatial relation index among spatial relation indexes of the at least two spatial relations.
2. The method of claim 1 , wherein the spatial relation comprises a first spatial relation in an ordered set comprising the at least two spatial relations.
3. The method of claim 1 , further comprising determining one or more transmission parameters based on the reference signal indicated by the spatial relation, wherein the sending the uplink transmission comprises sending the uplink transmission using the one or more transmission parameters.
4. The method of claim 1 , wherein the sending the uplink transmission comprises using a spatial domain transmission filter determined based on a spatial domain filter used to receive or transmit a reference signal indicated by the spatial relation.
5. The method of claim 1 , further comprising receiving an activation command activating, for the uplink resource, the at least two spatial relations.
6. The method of claim 1 , wherein:
the spatial relation is associated with a first transmission and reception point (TRP); and
a second spatial relation among the at least two spatial relations is associated with a second TRP.
7. The method of claim 1 , wherein the sending the uplink transmission comprises sending the uplink transmission via a second uplink resource different from the uplink resource.
8. The method of claim 1 , wherein the uplink resource is a physical uplink control channel (PUCCH) resource, and the sending the uplink transmission comprises sending the uplink transmission via a physical uplink shared channel (PUSCH) resource.
9. 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) scheduling an uplink transmission; and
based on an uplink resource, associated with a lowest resource index, corresponding to at least two spatial relations, send the uplink transmission using a transmission power that is based on a reference signal indicated by a spatial relation, among the at least two spatial relations, associated with a lowest spatial relation index among spatial relation indexes of the at least two spatial relations.
10. The wireless device of claim 9 , wherein the spatial relation comprises a first spatial relation in an ordered set comprising the at least two spatial relations.
11. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
determine one or more transmission parameters based on the reference signal indicated by the spatial relation, and
send the uplink transmission by causing sending the uplink transmission using the one or more transmission parameters.
12. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to send the uplink transmission by causing sending the uplink transmission using a spatial domain transmission filter determined based on a spatial domain filter used to receive or transmit a reference signal indicated by the spatial relation.
13. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive an activation command activating, for the uplink resource, the at least two spatial relations.
14. The wireless device of claim 9 , wherein:
the spatial relation is associated with a first transmission and reception point (TRP); and
a second spatial relation among the at least two spatial relations is associated with a second TRP.
15. The wireless device of claim 9 , wherein the instructions, when executed by the one or more processors, cause the wireless device to send the uplink transmission by causing sending the uplink transmission via a second uplink resource different from the uplink resource.
16. The wireless device of claim 9 , wherein the uplink resource is a physical uplink control channel (PUCCH) resource, and wherein the instructions, when executed by the one or more processors, cause the wireless device to send the uplink transmission by causing sending the uplink transmission via a physical uplink shared channel (PUSCH) resource.
17. A non-transitory computer readable medium storing instructions that, when executed, cause:
receiving, by a wireless device, downlink control information (DCI) scheduling an uplink transmission; and
based on an uplink resource, associated with a lowest resource index, corresponding to at least two spatial relations, sending the uplink transmission using a transmission power that is based on a reference signal indicated by a spatial relation, among the at least two spatial relations, associated with a lowest spatial relation index among spatial relation indexes of the at least two spatial relations.
18. The non-transitory computer readable medium of claim 17 , wherein the spatial relation comprises a first spatial relation in an ordered set comprising the at least two spatial relations.
19. The non-transitory computer readable medium of claim 17 , wherein the instructions, when executed, cause:
determining one or more transmission parameters based on the reference signal indicated by the spatial relation, and
sending the uplink transmission by causing sending the uplink transmission using the one or more transmission parameters.
20. The non-transitory computer readable medium of claim 17 , wherein the instructions, when executed, cause sending the uplink transmission by causing sending the uplink transmission using a spatial domain transmission filter determined based on a spatial domain filter used to receive or transmit a reference signal indicated by the spatial relation.
21. The non-transitory computer readable medium of claim 17 , wherein the instructions, when executed, cause receiving an activation command activating, for the uplink resource, the at least two spatial relations.
22. The non-transitory computer readable medium of claim 17 , wherein:
the spatial relation is associated with a first transmission and reception point (TRP); and
a second spatial relation among the at least two spatial relations is associated with a second TRP.
23. The non-transitory computer readable medium of claim 17 , wherein the instructions, when executed, cause sending the uplink transmission by causing sending the uplink transmission via a second uplink resource different from the uplink resource.
24. The non-transitory computer readable medium of claim 17 , wherein the uplink resource is a physical uplink control channel (PUCCH) resource, and wherein the instructions, when executed, cause sending the uplink transmission by causing sending the uplink transmission via a physical uplink shared channel (PUSCH) resource.