Power-boosting techniques for multiple uplink shared channel communications
Methods, systems, and devices for wireless communications are described in which one or more UEs may communicate with one or more base stations or transmission reception points (TRPs) based on scheduling information provided to the one or more UEs that schedule multiple transport blocks (TBs) for transmission. The multiple TBs may be divided into separate TB groups and different open loop power control parameters may be applied to the separate TB groups. Different open loop power control parameters may be identified based on a parameter set indication field that is included in scheduling information that schedules the multiple TBs. The parameter set indication field may indicate different open loop power control parameter sets with normal or power boosted parameters for different groups of TBs. In cases where multiple TRPs are used for communications, transmissions to different TRPs may have different power parameters based on the TB group and TRP.
1 . A method for wireless communication at a user equipment (UE), comprising:
receiving, from a base station, first control information that schedules one or more physical uplink shared channel (PUSCH) repetitions for two or more transport blocks;
determining, based at least in part on a power control indication provided in the first control information, a first open loop power control parameter for a first group of the two or more transport blocks and a second open loop power control parameter for a second group of the two or more transport blocks;
transmitting the first group of transport blocks using a first uplink transmission power that is based at least in part on the first open loop power control parameter; and
transmitting the second group of transport blocks using a second uplink transmission power that is based at least in part on the second open loop power control parameter.
2 . The method of claim 1 , further comprising:
receiving, from the base station, configuration information that indicates a group index for each of the two or more transport blocks; and
determining, for each transport block of the two or more transport blocks, whether the respective transport block belongs to the first group of transport blocks or the second group of transport blocks based at least in part on the group index associated with the transport block.
3 . The method of claim 1 , further comprising:
determining whether each transport block of the two or more transport blocks belongs to the first group of transport blocks or the second group of transport blocks based at least in part on an order in which the two or more transport blocks are scheduled in the first control information.
4 . The method of claim 1 , further comprising:
determining that one or more transport blocks of the two or more transport blocks belong to the first group of transport blocks based at least in part on the one or more transport blocks being scheduled for a retransmission; and
determining that one or more other transport blocks of the two or more transport blocks belong to the second group of transport blocks based at least in part on the one or more other transport blocks being scheduled for an initial transmission.
5 . The method of claim 1 , further comprising:
determining whether one or more transport blocks of the two or more transport blocks belongs to the first group of transport blocks or the second group of transport blocks based at least in part on the first control information, wherein the first control information includes one of a first priority indication value or a second priority indication value for each of the two or more transport blocks.
6 . The method of claim 1 , wherein the first control information includes an open loop power control parameter set indication field.
7 . The method of claim 1 , further comprising:
receiving, from the base station, configuration information that indicates whether an open loop power control parameter set indication field is applied to the first group of transport blocks, or the second group of transport blocks, or both the first group of transport blocks and the second group of transport blocks.
8 . The method of claim 7 , wherein the open loop power control parameter set indication field indicates a first set of configured open loop power control parameters or a second set of configured open loop power control parameters are to be applied to one or both of the first group of transport blocks or the second group of transport blocks, and wherein the second set of configured open loop power control parameters provides a higher uplink transmission power than the first set of configured open loop power control parameters.
9 . The method of claim 1 , wherein two or more repetitions of each transport block among the first group of transport blocks and the second group of transport blocks are transmitted in at least two sets of transmission occasions wherein a first set of transmission occasions is associated with a first sounding reference signal (SRS) resource set and a second set of transmission occasions is associated with a second SRS resource set, each of the at least two sets of transmission occasions having different transmission parameters, and wherein an open loop power control parameter set indication field indicates a first set of configured open loop power control parameters are to be applied to both the first set of transmission occasions and the second set of transmission occasions of the first group of transport blocks, or both the first set of transmission occasions and the second set of transmission occasions of the second group of transport blocks, or both the first set of transmission occasions and the second set of transmission occasions of both the first group of transport blocks and the second group of transport blocks based at least in part on the open loop power control parameter set indication field having a first value.
10 . The method of claim 1 , wherein two or more repetitions of each transport block among the first group of transport blocks and the second group of transport blocks are transmitted in at least two sets of transmission occasions, wherein a first set of transmission occasions is associated with a first sounding reference signal (SRS) resource set and a second set of transmission occasions is associated with a second SRS resource set, each of the two sets of transmission occasions having different transmission parameters, and wherein an open loop power control parameter set indication field indicates a second set of configured open loop power control parameters are to be applied to the first set of transmission occasions of the first group of transport blocks, or the first set of transmission occasions of the second group of transport blocks, or the first set of transmission occasions of both the first group of transport blocks and the second group of transport blocks, and a third set of configured open loop power control parameters are to be applied to the second set of transmission occasions of the first group of transport blocks, or the second set of transmission occasions of the second group of transport blocks, or the second set of transmission occasions of both the first group of transport blocks and the second group of transport blocks based at least in part on the open loop power control parameter set indication field having a second value.
11 . The method of claim 10 , wherein the first control information includes a separate SRS resource set indication field for each of the first set of transmission occasions and the second set of transmission occasions, and wherein a first value of the SRS resource set indication field indicates that the first and/or second open loop power control parameter for the first set of transmission occasions of the first group of transport blocks and/or the second group of transport blocks is selected from the second set of configured open loop power control parameters, and a second value of the SRS resource set indication field indicates that the first and/or second open loop power control parameter for the second set of transmission occasions of the first group of transport blocks and/or the second group of transport blocks is selected from the third set of configured open loop power control parameters.
12 . The method of claim 1 , further comprising:
two or more repetitions of each transport block among the first group of transport blocks and the second group of transport blocks are transmitted in at least two sets of transmission occasions, wherein a first set of transmission occasions is associated with a first sounding reference signal (SRS) resource set and a second set of transmission occasions is associated with a second SRS resource set, each of the at least two sets of transmission occasions having different transmission parameters,
wherein a first value of an open loop power control parameter set indication field indicates the first open loop power control parameter in a second set of configured open loop power control parameters is to be applied to the first set of transmission occasions of the first group of transport blocks, or the first set of transmission occasions of the second group of transport blocks, or the first set of transmission occasions of both the first group of transport blocks and the second group of transport blocks, and
wherein the second open loop power control parameter in the second set of configured open loop power control parameters is to be applied to the second set of transmission occasions of the first group of transport blocks, or the second set of transmission occasions of the second group of transport blocks, or the second set of transmission occasions of both the first group of transport blocks and the second group of transport blocks based at least in part on the open loop power control parameter set indication field having a second value.
13 . The method of claim 12 , wherein a single SRS resource set indication field is applied to both the first set of transmission occasions and the second set of transmission occasions, and the single SRS resource set indication field is mapped to the first open loop power control parameter for the first set of transmission occasions and the second open loop power control parameter for the second set of transmission occasions.
14 . The method of claim 1 , wherein the first control information includes an explicit indication of whether the first group of transport blocks and the second group of transport blocks are to use different open loop power control parameters.
15 . The method of claim 14 , wherein the explicit indication is provided in a dedicated field of the first control information that indicates whether an open loop power control parameter set indication field is applied to the first group of transport blocks, the second group of transport blocks, or to both the first group of transport blocks and the second group of transport blocks.
16 . The method of claim 14 , wherein the explicit indication is provided in separate open loop power control parameter set indication fields associated with each of the first group of transport blocks and the second group of transport blocks.
17 . The method of claim 16 , wherein the separate open loop power control parameter set indication fields are configured at the UE via radio resource control signaling.
18 . The method of claim 14 , wherein the explicit indication is provided in a single open loop power control parameter set indication field, and wherein a first subset of bits of the single open loop power control parameter set indication field is associated with the first group of transport blocks and a second subset of bits of the single open loop power control parameter set indication field is associated with the second group of transport blocks.
19 . The method of claim 14 , wherein:
two or more repetitions of each transport block of the first group of transport blocks and the second group of transport blocks are transmitted in at least two sets of transmission occasions wherein a first set of transmission occasions is associated with a first sounding reference signal (SRS) resource set, and a second set of transmission occasions is associated with a second SRS resource set, each of the at least two sets of transmission occasions having different transmission parameters, and
wherein the first control information further includes a SRS resource set indication field that identifies open loop power control parameters for each of the at least two sets of transmission occasions.
20 . An apparatus for wireless communication at a user equipment (UE), comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a base station, first control information that schedules one or more physical uplink shared channel (PUSCH) repetitions for two or more transport blocks;
determine, based at least in part on a power control indication provided in the first control information, a first open loop power control parameter for a first group of the two or more transport blocks and a second open loop power control parameter for a second group of the two or more transport blocks;
transmit the first group of transport blocks using a first uplink transmission power that is based at least in part on the first open loop power control parameter; and
transmit the second group of transport blocks using a second uplink transmission power that is based at least in part on the second open loop power control parameter.
21 . The apparatus of claim 20 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, configuration information that indicates a group index for each of the two or more transport blocks; and
determine, for each transport block of the two or more transport blocks, whether the respective transport block belongs to the first group of transport blocks or the second group of transport blocks based at least in part on the group index associated with the transport block.
22 . The apparatus of claim 20 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine whether each transport block of the two or more transport blocks belongs to the first group of transport blocks or the second group of transport blocks based at least in part on an order in which the two or more transport blocks are scheduled in the first control information.
23 . The apparatus of claim 20 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine that one or more transport blocks of the two or more transport blocks belong to the first group of transport blocks based at least in part on the one or more transport blocks being scheduled for a retransmission; and
determine that one or more other transport blocks of the two or more transport blocks belong to the second group of transport blocks based at least in part on the one or more other transport blocks being scheduled for an initial transmission.
24 . The apparatus of claim 20 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine whether one or more transport blocks of the two or more transport blocks belongs to the first group of transport blocks or the second group of transport blocks based at least in part on the first control information, wherein the first control information includes one of a first priority indication value or a second priority indication value for each of the two or more transport blocks.
25 . The apparatus of claim 20 , wherein the first control information includes an open loop power control parameter set indication field.
26 . The apparatus of claim 20 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the base station, configuration information that indicates whether an open loop power control parameter set indication field is applied to the first group of transport blocks, or the second group of transport blocks, or both the first group of transport blocks and the second group of transport blocks.
27 . The apparatus of claim 26 , wherein the open loop power control parameter set indication field indicates a first set of configured open loop power control parameters or a second set of configured open loop power control parameters are to be applied to one or both of the first group of transport blocks or the second group of transport blocks, and wherein the second set of configured open loop power control parameters provides a higher uplink transmission power than the first set of configured open loop power control parameters.
28 . The apparatus of claim 20 , wherein two or more repetitions of each transport block among the first group of transport blocks and the second group of transport blocks are transmitted in at least two sets of transmission occasions wherein a first set of transmission occasions is associated with a first sounding reference signal (SRS) resource set and a second set of transmission occasions is associated with a second SRS resource set, each of the at least two sets of transmission occasions having different transmission parameters, and wherein an open loop power control parameter set indication field indicates a first set of configured open loop power control parameters are to be applied to both the first set of transmission occasions and the second set of transmission occasions of the first group of transport blocks, or both the first set of transmission occasions and the second set of transmission occasions of the second group of transport blocks, or both the first set of transmission occasions and the second set of transmission occasions of both the first group of transport blocks and the second group of transport blocks based at least in part on the open loop power control parameter set indication field having a first value.
29 . An apparatus for wireless communication at a user equipment (UE), comprising:
means for receiving, from a base station, first control information that schedules one or more physical uplink shared channel (PUSCH) repetitions for two or more transport blocks;
means for determining, based at least in part on a power control indication provided in the first control information, a first open loop power control parameter for a first group of the two or more transport blocks and a second open loop power control parameter for a second group of the two or more transport blocks;
means for transmitting the first group of transport blocks using a first uplink transmission power that is based at least in part on the first open loop power control parameter; and
means for transmitting the second group of transport blocks using a second uplink transmission power that is based at least in part on the second open loop power control parameter.
30 . A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to:
receive, from a base station, first control information that schedules one or more physical uplink shared channel (PUSCH) repetitions for two or more transport blocks;
determine, based at least in part on a power control indication provided in the first control information, a first open loop power control parameter for a first group of the two or more transport blocks and a second open loop power control parameter for a second group of the two or more transport blocks;
transmit the first group of transport blocks using a first uplink transmission power that is based at least in part on the first open loop power control parameter; and
transmit the second group of transport blocks using a second uplink transmission power that is based at least in part on the second open loop power control parameter.