Activation indication of transmission configuration groups
A wireless device receives one or more messages comprising one or more configuration parameters. The one or more configuration parameters indicate a plurality of transmission configuration indication (TCI) states. comprise at least one configuration parameter of a first downlink transmission group and a second downlink transmission group. A medium access control control element (MAC CE) is received. The MAC CE comprises: a first field identifying one of the first downlink transmission group and the second downlink transmission group; and a second field activating one or more TCI states, of the plurality of TCI states, for a downlink transmission group identified by the first field. A downlink control information (DCI) scheduling a transport block is received. In response to receiving the DCI, the transport block based on a TCI state among the one or more TCI states of the downlink transmission group is received.
1. A method comprising:
receiving, by a wireless device, one or more messages comprising one or more configuration parameters:
indicating a plurality of transmission configuration indication (TCI) states; and
comprising at least one configuration parameter of a first downlink transmission group and a second downlink transmission group;
receiving a medium access control control element (MAC CE) comprising:
a first field identifying one of the first downlink transmission group and the second downlink transmission group; and
a second field activating one or more TCI states, of the plurality of TCI states, for a downlink transmission group identified by the first field;
receiving a downlink control information (DCI) scheduling a transport block; and
in response to receiving the DCI, receiving the transport block based on a TCI state among the one or more TCI states of the downlink transmission group.
2. The method of claim 1 , wherein the one or more configuration parameters indicate a plurality of downlink transmission groups for a plurality of control resource sets (coresets), wherein each coreset of the plurality of coresets is associated with a respective downlink transmission group of the plurality of downlink transmission groups.
3. The method of claim 2 , wherein the receiving the DCI comprises receiving the DCI in a coreset, among the plurality of coresets, associated with the downlink transmission group of the plurality of downlink transmission groups.
4. The method of claim 3 , wherein the receiving the MAC CE comprises receiving the MAC CE in the coreset.
5. The method of claim 3 , wherein the first field comprises a coreset index associated with the coreset, wherein the coreset index indicates the downlink transmission group.
6. The method of claim 5 , wherein the one or more configuration parameters indicate the coreset index for the coreset.
7. The method of claim 1 , wherein the DCI indicates the TCI state among the one or more TCI states of the downlink transmission group.
8. The method of claim 1 , wherein the receiving the transport block based on the TCI state comprises that one or more antenna ports of demodulation reference signals of the transport block are quasi co-located with a reference signal indicated by the TCI state.
9. The method of claim 1 , wherein the one of the first downlink transmission group and the second downlink transmission group is the first downlink transmission group based on a value of the first field being equal to a first value.
10. The method of claim 1 , wherein the one of the first downlink transmission group and the second downlink transmission group is the second downlink transmission group based on a value of the first field being equal to a second value.
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 one or more messages comprising one or more configuration parameters:
indicating a plurality of transmission configuration indication (TCI) states; and
comprising at least one configuration parameter of a first downlink transmission group and a second downlink transmission group;
receive a medium access control control element (MAC CE) comprising:
a first field identifying one of the first downlink transmission group and the second downlink transmission group; and
a second field activating one or more TCI states, of the plurality of TCI states, for a downlink transmission group identified by the first field;
receive a downlink control information (DCI) scheduling a transport block; and
in response to receiving the DCI, receive the transport block based on a TCI state among the one or more TCI states of the downlink transmission group.
12. The wireless device of claim 11 , wherein the one or more configuration parameters indicate a plurality of downlink transmission groups for a plurality of control resource sets (coresets), wherein each coreset of the plurality of coresets is associated with a respective downlink transmission group of the plurality of downlink transmission groups.
13. The wireless device of claim 12 , wherein the receiving the DCI comprises receiving the DCI in a coreset, among the plurality of coresets, associated with the downlink transmission group of the plurality of downlink transmission groups.
14. The wireless device of claim 13 , wherein the first field comprises a coreset index associated with the coreset, wherein the coreset index indicates the downlink transmission group.
15. The wireless device of claim 14 , wherein the one or more configuration parameters indicate the coreset index for the coreset.
16. The wireless device of claim 11 , wherein the DCI indicates the TCI state among the one or more TCI states of the downlink transmission group.
17. The wireless device of claim 11 , wherein the reception of the transport block based on the TCI state comprises one or more antenna ports of demodulation reference signals of the transport block are quasi co-located with a reference signal indicated by the TCI state.
18. The wireless device of claim 11 , wherein the one of the first downlink transmission group and the second downlink transmission group is the first downlink transmission group based on a value of the first field being equal to a first value.
19. The wireless device of claim 11 , wherein the one of the first downlink transmission group and the second downlink transmission group is the second downlink transmission group based on a value of the first field being equal to a second value.
20. A system comprising:
a base station comprising:
one or more first processors; and
first memory storing first instructions that, when executed by the one or more first processors, cause the base station to:
transmit one or more messages comprising one or more configuration parameters:
indicating a plurality of transmission configuration indication (TCI) states; and
comprising at least one configuration parameter of a first downlink transmission group and a second downlink transmission group;
transmit a medium access control control element (MAC CE) comprising:
a first field identifying one of the first downlink transmission group and the second downlink transmission group; and
a second field activating one or more TCI states, of the plurality of TCI states, for a downlink transmission group identified by the first field;
transmit a downlink control information (DCI) scheduling a transport block; and
in response to transmitting the DCI, transmit the transport block based on a TCI state among the one or more TCI states of the downlink transmission group; and
a wireless device comprising:
one or more second processors; and
second memory storing instructions that, when executed by the one or more second processors, cause the wireless device to:
receive the one or more messages;
receive the MAC CE;
receive the DCI scheduling the transport block; and
in response to receiving the DCI, receive the transport block based on the TCI state among the one or more TCI states of the downlink transmission group.