Configuring uplink transmission configuration indication power control parameters
Apparatuses, methods, and systems are disclosed for configuring UL-TCI power control parameters. One method ( 400 ) includes receiving ( 402 ) an RRC message configuring a set of UL-TCI power control parameter groups. Each UL-TCI power control parameter group defines a group of power control parameters used to calculate an uplink transmission power. The method ( 400 ) includes receiving ( 404 ) DCI scheduling a codebook-based PUSCH transmission. The DCI comprises an UL-TCI field indicating at least one spatial domain transmission filter for the codebook-based PUSCH transmission. The method ( 400 ) includes determining ( 406 ) power control parameters for the codebook-based PUSCH transmission based on an UL-TCI power control parameter group of the set of UL-TCI power control parameter groups that corresponds to the UL-TCI field. The method ( 400 ) includes transmitting ( 408 ) the codebook-based PUSCH with a transmission power determined based on the power control parameters.
1 . A method performed by a user equipment (UE), the method comprising:
receiving a radio resource control (RRC) message configuring a set of uplink transmission configuration indication (TCI) power control parameter groups, wherein each uplink TCI power control parameter group of the set of uplink TCI power control parameter groups defines a group of power control parameters used to calculate an uplink transmission power;
receiving downlink control information (DCI) scheduling a codebook-based physical uplink shared channel (PUSCH) transmission, wherein the DCI comprises an uplink TCI field indicating at least one spatial domain transmission filter for the codebook-based PUSCH transmission;
determining power control parameters for the codebook-based PUSCH transmission based on an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups that corresponds to the uplink TCI field; and
transmitting the codebook-based PUSCH transmission with a transmission power determined based on the power control parameters, wherein, in response to the uplink TCI field indicating a plurality of spatial domain transmission filters for the codebook-based PUSCH transmission, each spatial domain transmission filter of the plurality of spatial domain transmission filters is mapped to an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups.
2 . The method of claim 1 , wherein the power control parameters comprise one or more of p0, alpha, at least one pathloss reference signal, or a closed loop index.
3 . The method of claim 2 , wherein the at least one pathloss reference signal comprises a channel state information (CSI) reference signal (RS), or a synchronization signal block (SSB), or both.
4 . The method of claim 1 , wherein the uplink TCI power control parameter group is defined as part of an uplink TCI state.
5 . The method of claim 1 , wherein the power control parameters are defined as part of an uplink TCI state.
6 . The method of claim 1 , wherein each spatial domain transmission filter of the plurality of spatial domain transmission filters uses the same p0, alpha, and closed loop index, and a respective pathloss reference signal of a plurality of pathloss reference signals.
7 . A user equipment (UE), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a radio resource control (RRC) message configuring a set of uplink transmission configuration indication (TCI) power control parameter groups, wherein each uplink TCI power control parameter group of the set of uplink TCI power control parameter groups defines a group of power control parameters used to calculate an uplink transmission power;
receive downlink control information (DCI) scheduling a codebook-based physical uplink shared channel (PUSCH) transmission, wherein the DCI comprises an uplink TCI field indicating at least one spatial domain transmission filter for the codebook-based PUSCH transmission;
determine power control parameters for the codebook-based PUSCH transmission based on an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups that corresponds to the uplink TCI field; and
transmit the codebook-based PUSCH transmission with a transmission power determined based on the power control parameters, wherein, in response to the uplink TCI field indicating a plurality of spatial domain transmission filters for the codebook-based PUSCH transmission, each spatial domain transmission filter of the plurality of spatial domain transmission filters is mapped to an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups.
8 . The UE of claim 7 , wherein the power control parameters comprise one or more of p0, alpha, at least one pathloss reference signal, or a closed loop index.
9 . The UE of claim 8 , wherein the at least one pathloss reference signal comprises a channel state information (CSI) reference signal (RS), or a synchronization signal block (SSB), or both.
10 . The UE of claim 7 , wherein the uplink TCI power control parameter group is defined as part of an uplink TCI state.
11 . The UE of claim 7 , wherein the power control parameters are defined as part of an uplink TCI state.
12 . The UE of claim 7 , wherein each spatial domain transmission filter of the plurality of spatial domain transmission filters uses the same p0, alpha, and closed loop index, and a respective pathloss reference signal of a plurality of pathloss reference signals.
13 . An apparatus A base station, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the base station to:
transmit, to a user equipment (UE), a radio resource control (RRC) message configuring a set of uplink transmission configuration indication (TCI) power control parameter groups, wherein each uplink TCI power control parameter group of the set of uplink TCI power control parameter groups defines a group of power control parameters used to calculate an uplink transmission power;
transmit downlink control information (DCI) scheduling a codebook-based physical uplink shared channel (PUSCH) transmission, wherein the DCI comprises an uplink TCI field indicating at least one spatial domain transmission filter for the codebook-based PUSCH transmission, and the UE determines power control parameters for the codebook-based PUSCH transmission based on an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups that corresponds to the uplink TCI field; and
receive the codebook-based PUSCH transmission with a transmission power determined based on the power control parameters, wherein, in response to the uplink TCI field indicating a plurality of spatial domain transmission filters for the codebook-based PUSCH transmission, each spatial domain transmission filter of the plurality of spatial domain transmission filters is mapped to an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups.
14 . The base station of claim 13 , wherein the power control parameters comprise one or more of p0, alpha, at least one pathloss reference signal, or a closed loop index.
15 . The base station of claim 14 , wherein the at least one pathloss reference signal comprises a channel state information (CSI) reference signal (RS), or a synchronization signal block (SSB), or both.
16 . The base station of claim 13 , wherein the uplink TCI power control parameter group is defined as part of an uplink TCI state.
17 . The base station of claim 13 , wherein the power control parameters are defined as part of an uplink TCI state.
18 . A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and configured to cause the processor to:
receive a radio resource control (RRC) message configuring a set of uplink transmission configuration indication (TCI) power control parameter groups, wherein each uplink TCI power control parameter group of the set of uplink TCI power control parameter groups defines a group of power control parameters used to calculate an uplink transmission power;
receive downlink control information (DCI) scheduling a codebook-based physical uplink shared channel (PUSCH) transmission, wherein the DCI comprises an uplink TCI field indicating at least one spatial domain transmission filter for the codebook-based PUSCH transmission;
determine power control parameters for the codebook-based PUSCH transmission based on an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups that corresponds to the uplink TCI field; and
transmit the codebook-based PUSCH transmission with a transmission power determined based on the power control parameters, wherein, in response to the uplink TCI field indicating a plurality of spatial domain transmission filters for the codebook-based PUSCH transmission, each spatial domain transmission filter of the plurality of spatial domain transmission filters is mapped to an uplink TCI power control parameter group of the set of uplink TCI power control parameter groups.