Beam Configuration For Secondary Cells
Procedures for using a transmission configuration indication (TCI) state in wireless communications are described. A base station may send one or more configuration parameters indicating a plurality of cells to be updated with a same TCI state. A wireless device may apply a TCI state, indicated by a message, to the plurality of cells for at least one of reception or transmission.
1 . A method comprising:
receiving, by a wireless device, configuration information of a plurality of cells associated with a transmission configuration indication (TCI) state update;
receiving a message indicating:
a cell identity of a first cell of the plurality of cells; and
a TCI state identity (ID); and
applying a TCI state, based on the TCI state ID indicated by the message, to the plurality of cells for at least one of reception or transmission.
2 . The method of claim 1 , further comprising:
determining, based on the configuration information, a cell group parameter indicating one or more serving cell indexes of the plurality of cells,
wherein the applying the TCI state to the plurality of cells comprises applying, based on the cell group parameter and the TCI state ID, the TCI state to one or more channels of each cell of the plurality of cells.
3 . The method of claim 1 , further comprising:
sending, based on the TCI state and via one or more uplink control channels of each cell of the plurality of cells, uplink control information; and
receiving, based on the TCI state and via one or more downlink control channels of each cell of the plurality of cells, downlink control information,
wherein each cell of the plurality of cells is quasi-co-located for physical downlink control channel (PDCCH) reception.
4 . The method of claim 1 , wherein the TCI state is associated with a cell group parameter indicating one or more cell indexes of the plurality of cells, and wherein the one or more cell indexes comprises a cell index for the first cell.
5 . The method of claim 1 , wherein the TCI state is associated with a reference signal, and
wherein demodulation reference signal (DM-RS) antenna ports, of one or more channels associated with control resource sets (CORESETs) of each cell of the plurality of cells, are quasi-co-located with the reference signal.
6 . The method of claim 1 , wherein the applying the TCI state to the plurality of cells is based on:
the message indicating the cell identity of the first cell and the TCI state ID; and
the plurality of cells comprising the first cell, and
wherein the applying the TCI state to the plurality of cells comprises applying an antenna port quasi co-location associated with the TCI state to control resource sets (CORESETs) in downlink bandwidth parts (BWPs) of the plurality of cells.
7 . The method of claim 1 , wherein the applying the TCI state to the plurality of cells comprises applying at least one TCI state associated with the TCI state ID to control resource sets (CORESETS) in downlink bandwidth parts (BWPs) of the plurality of cells.
8 . A method comprising:
sending, by a base station, configuration information of a plurality of cells associated with a transmission configuration indication (TCI) state update;
sending a message indicating:
a cell identity of a first cell of the plurality of cells; and
a TCI state identity (ID); and
applying a TCI state, based on the TCI state ID indicated by the message, to the plurality of cells for at least one of transmission or reception.
9 . The method of claim 8 , further comprising:
configuring, for the configuration information, a cell group parameter indicating one or more serving cell indexes of the plurality of cells,
wherein the applying the TCI state to the plurality of cells comprises applying, based on the cell group parameter and the TCI state ID, the TCI state to one or more channels of each cell of the plurality of cells.
10 . The method of claim 8 , further comprising:
receiving, based on the TCI state and via one or more uplink control channels of each cell of the plurality of cells, uplink control information; and
sending, based on the TCI state and via one or more downlink control channels of each cell of the plurality of cells, downlink control information,
wherein each cell of the plurality of cells is quasi-co-located for physical downlink control channel (PDCCH) transmission.
11 . The method of claim 8 , wherein the TCI state is associated with a cell group parameter indicating one or more cell indexes of the plurality of cells, and wherein the one or more cell indexes comprises a cell index for the first cell.
12 . The method of claim 8 , wherein the TCI state is associated with a reference signal, and
wherein demodulation reference signal (DM-RS) antenna ports, of one or more channels associated with control resource sets (CORESETs) of each cell of the plurality of cells, are quasi-co-located with the reference signal.
13 . The method of claim 8 , wherein the applying the TCI state to the plurality of cells is based on:
the message indicating the cell identity of the first cell and the TCI state ID; and
the plurality of cells comprising the first cell,
wherein the applying the TCI state to the plurality of cells comprises applying an antenna port quasi co-location associated with the TCI state to control resource sets (CORESETs) in downlink bandwidth parts (BWPs) of the plurality of cells.
14 . The method of claim 8 , wherein the applying the TCI state to the plurality of cells comprises applying at least one TCI state associated with the TCI state ID to control resource sets (CORESETS) in downlink bandwidth parts (BWPs) of the plurality of cells.
15 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the wireless device to:
receive configuration information of a plurality of cells associated with a transmission configuration indication (TCI) state update;
receive a message indicating:
a cell identity of a first cell of the plurality of cells; and
a TCI state identity (ID); and
apply a TCI state, based on the TCI state ID indicated by the message, to the plurality of cells for at least one of reception or transmission.
16 . The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, configure the wireless device to:
determine, based on the configuration information, a cell group parameter indicating one or more serving cell indexes of the plurality of cells; and
apply the TCI state to the plurality of cells by applying, based on the cell group parameter and the TCI state ID, the TCI state to one or more channels of each cell of the plurality of cells.
17 . The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, configure the wireless device to:
send, based on the TCI state and via one or more uplink control channels of each cell of the plurality of cells, uplink control information; and
receive, based on the TCI state and via one or more downlink control channels of each cell of the plurality of cells, downlink control information, and
wherein each cell of the plurality of cells is quasi-co-located for physical downlink control channel (PDCCH) reception.
18 . The wireless device of claim 15 , wherein the TCI state is associated with a cell group parameter indicating one or more cell indexes of the plurality of cells, and wherein the one or more cell indexes comprises a cell index for the first cell.
19 . The wireless device of claim 15 , wherein the TCI state is associated with a reference signal, and
wherein demodulation reference signal (DM-RS) antenna ports, of one or more channels associated with control resource sets (CORESETs) of each cell of the plurality of cells, are quasi-co-located with the reference signal.
20 . The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, configure the wireless device to apply the TCI state to the plurality of cells based on:
the message indicating the cell identity of the first cell and the TCI state ID; and
the plurality of cells comprising the first cell, and
wherein the instructions, when executed by the one or more processors, configure the wireless device to apply the TCI state to the plurality of cells by applying an antenna port quasi co-location associated with the TCI state to control resource sets (CORESETs) in downlink bandwidth parts (BWPs) of the plurality of cells.
21 . The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, configure the wireless device to apply at least one TCI state associated with the TCI state ID to control resource sets (CORESETS) in downlink bandwidth parts (BWPs) of the plurality of cells.
22 . A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the base station to:
send configuration information of a plurality of cells associated with a transmission configuration indication (TCI) state update;
send a message indicating:
a cell identity of a first cell of the plurality of cells; and
a TCI state identity (ID); and
apply a TCI state, based on the TCI state ID indicated by the message, to the plurality of cells for at least one of transmission or reception.
23 . The base station of claim 22 , wherein the instructions, when executed by the one or more processors, configure the base station to:
configure, for the configuration information, a cell group parameter indicating one or more cell indexes of the plurality of cells; and
apply the TCI state to the plurality of cells by applying, based on the cell group parameter and the TCI state ID, the TCI state to one or more channels of each cell of the plurality of cells.
24 . The base station of claim 22 , wherein the instructions, when executed by the one or more processors, configure the base station to:
receive, based on the TCI state and via one or more uplink control channels of each cell of the plurality of cells, uplink control information; and
send, based on the TCI state and via one or more downlink control channels of each cell of the plurality of cells, downlink control information, and
wherein each cell of the plurality of cells is quasi-co-located for physical downlink control channel (PDCCH) transmission.
25 . The base station of claim 22 , wherein the TCI state is associated with a cell group parameter indicating one or more cell indexes of the plurality of cells, and wherein the one or more cell indexes comprises a cell index for the first cell.
26 . The base station of claim 22 , wherein the TCI state is associated with a reference signal, and
wherein demodulation reference signal (DM-RS) antenna ports, of one or more channels associated with control resource sets (CORESETs) of each cell of the plurality of cells, are quasi-co-located with the reference signal.
27 . The base station of claim 22 , wherein the instructions, when executed by the one or more processors, configure the base station to apply the TCI state to the plurality of cells based on:
the message indicating the cell identity of the first cell and the TCI state ID; and
the plurality of cells comprising the first cell, and
wherein the instructions, when executed by the one or more processors, configure the base station to apply the TCI state to the plurality of cells by applying an antenna port quasi co-location associated with the TCI state to control resource sets (CORESETs) in downlink bandwidth parts (BWPs) of the plurality of cells.
28 . The base station of claim 22 , wherein the instructions, when executed by the one or more processors, configure the base station to apply the TCI state to the plurality of cells by applying at least one TCI state associated with the TCI state ID to control resource sets (CORESETS) in downlink bandwidth parts (BWPs) of the plurality of cells.