Default rules in control channel repetition
A wireless device may receive an activation command indicating a set of at least two transmission configuration indicator (TCI) states for a control resource set (coreset) with a lowest coreset index in an active downlink bandwidth part of a cell. The wireless device may select, for transmission of an uplink signal, a TCI state that occurs first in the set of the at least two TCI states in response to the coreset being activated with the at least two TCI states. The wireless device may transmit, via an uplink resource, the uplink signal with a transmission parameter determined based on the TCI state.
1. A method comprising:
receiving, by a wireless device, an activation command indicating a set of at least two transmission configuration indicator (TCI) states for a control resource set (coreset) with a lowest coreset index in an active downlink bandwidth part of a cell;
selecting, for transmission of an uplink signal, a TCI state that occurs first in the set of the at least two TCI states in response to the coreset being activated with the at least two TCI states; and
transmitting, via an uplink resource, the uplink signal with a transmission parameter determined based on the TCI state.
2. The method of claim 1 , further comprising receiving a downlink control information (DCI) indicating the uplink resource for transmission of the uplink signal, wherein the selecting, for transmission of the uplink signal, the TCI state is based on the uplink resource not being configured or activated with a spatial relation.
3. The method of claim 1 , wherein:
the uplink signal is a sounding reference signal (SRS); and
the uplink resource is an SRS resource.
4. The method of claim 1 , wherein:
the uplink signal is an uplink control information (UCI) that comprises at least one of:
a scheduling request (SR);
a hybrid automatic repeat request acknowledgement (HARQ-ACK); or
a channel state information (CSI) report; and
the uplink resource is a physical uplink control channel (PUCCH) resource.
5. The method of claim 1 , wherein:
the uplink signal is a transport block; and
the uplink resource is a physical uplink shared channel (PUSCH) resource.
6. The method of claim 1 , wherein:
the transmission parameter is determined based on a reference signal indicated by the TCI state; and
the transmission parameter is a transmission power or a spatial domain transmission filter.
7. The method of claim 1 , further comprising receiving one or more messages comprising one or more configuration parameters for the cell.
8. The method of claim 7 , wherein the one or more configuration parameters comprise a parameter that enables using default transmission parameters for uplink transmissions via the cell.
9. The method of claim 8 , wherein the selecting, for transmission of the uplink signal, the TCI state is based on the one or more configuration parameters comprising the parameter.
10. The method of claim 7 , wherein the selecting, for transmission of the uplink signal, the TCI state is based on the one or more configuration parameters not indicating at least one pathloss reference 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 an activation command indicating a set of at least two transmission configuration indicator (TCI) states for a control resource set (coreset) with a lowest coreset index in an active downlink bandwidth part of a cell;
select, for transmission of an uplink signal, a TCI state that occurs first in the set of the at least two TCI states in response to the coreset being activated with the at least two TCI states; and
transmit, via an uplink resource, the uplink signal with a transmission parameter determined based on the TCI state.
12. The wireless device of claim 11 , wherein the instructions further cause the wireless device to receive a downlink control information (DCI) indicating the uplink resource for transmission of the uplink signal, wherein the selecting, for transmission of the uplink signal, the TCI state is based on the uplink resource not being configured or activated with a spatial relation.
13. The wireless device of claim 11 , wherein:
the uplink signal is a sounding reference signal (SRS); and
the uplink resource is an SRS resource.
14. The wireless device of claim 11 , wherein:
the uplink signal is an uplink control information (UCI) that comprises at least one of:
a scheduling request (SR);
a hybrid automatic repeat request acknowledgement (HARQ-ACK); or
a channel state information (CSI) report; and
the uplink resource is a physical uplink control channel (PUCCH) resource.
15. The wireless device of claim 11 , wherein:
the uplink signal is a transport block; and
the uplink resource is a physical uplink shared channel (PUSCH) resource.
16. The wireless device of claim 11 , wherein:
the transmission parameter is determined based on a reference signal indicated by the TCI state; and
the transmission parameter is a transmission power or a spatial domain transmission filter.
17. The wireless device of claim 11 , wherein the instructions further cause the wireless device to receive one or more messages comprising one or more configuration parameters for the cell.
18. The wireless device of claim 17 , wherein:
the one or more configuration parameters comprise a parameter that enables using default transmission parameters for uplink transmissions via the cell; and
the selecting, for transmission of the uplink signal, the TCI state is based on the one or more configuration parameters comprising the parameter.
19. The wireless device of claim 17 , wherein the selecting, for transmission of the uplink signal, the TCI state is based on the one or more configuration parameters not indicating at least one pathloss reference signal.
20. A system comprising:
a base station comprising:
one or more first processors and memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit an activation command indicating a set of at least two transmission configuration indicator (TCI) states for a control resource set (coreset) with a lowest coreset index in an active downlink bandwidth part of a cell; and
a wireless device station comprising:
one or more second processors and memory storing instructions that, when executed by the one or more second processors, cause the wireless device to:
receive, from the base station, the activation command;
select, for transmission of an uplink signal, a TCI state that occurs first in the set of the at least two TCI states in response to the coreset being activated with the at least two TCI states; and
transmit, via an uplink resource, the uplink signal with a transmission parameter determined based on the TCI state.