SRS resource set and beam order association for multi-beam PUSCH
Methods, apparatuses, and computer readable storage medium for PUSCH repetitions and SRS resource sets are provided. An example method includes receiving a configuration of a first SRS resource set and a second SRS resource set. The example method further includes receiving, from a network entity, DCI for an UL transmission, the DCI indicating the first SRS resource set and the second SRS resource set. The first/second SRS resource set is respectively associated with a first/second beam. The example method further includes transmitting, to the network entity, a first set of repetitions of a PUSCH based on the first SRS resource set and a second set of repetitions of the PUSCH based on the second SRS resource set in an order based on information received in the configuration of the first SRS resource set and the second SRS resource set or in the DCI scheduling the UL transmission.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory and, based at least in part on stored information that is stored in the memory, the at least one processor is configured to cause the apparatus to:
receive a configuration of a first sounding reference signal (SRS) resource set and a second SRS resource set;
receive, from a network entity, downlink control information (DCI) for an uplink (UL) transmission, the DCI indicating the first SRS resource set and the second SRS resource set, wherein the DCI comprises a codepoint representing an order for the first SRS resource set and the second SRS resource set, wherein the codepoint is selected from a set of four codepoint values including:
a first codepoint value that indicates the first SRS resource set is to be used,
a second codepoint value that indicates the second SRS resource set is to be used,
a third codepoint value that indicates that the first SRS resource set is to be used for a first set of repetitions, and the second SRS resource set is to be used for a second set of repetitions, and
a fourth codepoint value that indicates that the second SRS resource set is to be used for the first set of repetitions, and the first SRS resource set is to be used for the second set of repetitions; and
transmit, to the network entity based on the DCI indicating the third codepoint value or the fourth codepoint value, the first set of repetitions of a physical uplink shared channel (PUSCH) based on the first SRS resource set and the second set of repetitions of the PUSCH based on the second SRS resource set in the order indicated by the codepoint of the DCI.
2 . The apparatus of claim 1 , wherein the order is further based on a first SRS resource set identifier (ID) associated with the first SRS resource set and a second SRS resource set ID associated with the second SRS resource set and received in the configuration.
3 . The apparatus of claim 2 , wherein the third codepoint value indicates the order in which the first SRS resource set is to be used for the first set of repetitions that are earlier in time based on the first SRS resource set ID either being a lower number between the first SRS resource set ID and the second SRS resource set ID, and
wherein the fourth codepoint value indicates the order in which the first SRS resource set is to be used for the first set of repetitions that are earlier in time based on the first SRS resource set ID either being a higher number between the first SRS resource set ID and the second SRS resource set ID.
4 . The apparatus of claim 1 , wherein the first SRS resource set and the second SRS resource set are associated with different transmission/reception points, antenna panels, or antennas of the network entity.
5 . The apparatus of claim 1 , wherein the configuration includes SRS resource set order representing the order between the first SRS resource set and the second SRS resource set.
6 . The apparatus of claim 1 , wherein a same data or transport block is transmitted on each repetition.
7 . The apparatus of claim 1 , wherein the DCI indicates support for dynamic order switching.
8 . The apparatus of claim 1 , wherein the codepoint is the fourth codepoint value that indicates that an SRS resource set with a lower SRS resource set identifier (ID) is later in time.
9 . The apparatus of claim 1 , wherein the codepoint is the third codepoint value that indicates that an SRS resource set with a higher SRS resource set identifier (ID) is later in time.
10 . The apparatus of claim 1 , wherein the UE transmits the first set of repetitions with a first set of power control parameters and the second set of repetitions with a second set of power control parameters.
11 . The apparatus of claim 1 , wherein the DCI indicates a first SRS resource indicator (SRI) for the first set of repetitions and a second SRI for the second set of repetitions.
12 . The apparatus of claim 1 , wherein the first set of repetitions is associated with a first antenna at the network entity and the second set of repetitions is associated with a second antenna at the network entity.
13 . The apparatus of claim 1 , further comprising a transceiver or an antenna coupled to the at least one processor.
14 . An apparatus for wireless communication at a network entity, comprising:
memory; and
at least one processor coupled to the memory and, based at least in part on stored information that is stored in the memory, the at least one processor is configured to cause the apparatus to:
transmit a configuration of a first sounding reference signal (SRS) resource set and a second SRS resource set;
transmit, for a user equipment (UE), downlink control information (DCI) for an uplink (UL) transmission, the DCI indicating the first SRS resource set and the second SRS resource set, wherein the DCI comprises a codepoint representing an order for the first SRS resource set and the second SRS resource set, wherein the codepoint is selected from a set of four codepoint values including:
a first codepoint value that indicates the first SRS resource set is to be used,
a second codepoint value that indicates the second SRS resource set is to be used,
a third codepoint value that indicates that the first SRS resource set is to be used for a first set of repetitions, and the second SRS resource set is to be used for a second set of repetitions, and
a fourth codepoint value that indicates that the second SRS resource set is to be used for the first set of repetitions, and the first SRS resource set is to be used for the second set of repetitions; and
receive, based on the DCI indicating the third codepoint value or the fourth codepoint value, the first set of repetitions of a physical uplink shared channel (PUSCH) based on the first SRS resource set and the second set of repetitions of the PUSCH based on the second SRS resource set in the order indicated by the codepoint of the DCI.
15 . The apparatus of claim 14 , wherein the order is further based on a first SRS resource set identifier (ID) associated with the first SRS resource set and a second SRS resource set ID associated with the second SRS resource set and received in the configuration.
16 . The apparatus of claim 15 , wherein the third codepoint value indicates the order in which the first SRS resource set is to be used for the first set of repetitions that are earlier in time based on the first SRS resource set ID either being a lower number between the first SRS resource set ID and the second SRS resource set ID, and
wherein the fourth codepoint value indicates the order in which the first SRS resource set is to be used for the first set of repetitions that are earlier in time based on the first SRS resource set ID either being a higher number between the first SRS resource set ID and the second SRS resource set ID.
17 . The apparatus of claim 15 , wherein the first SRS resource set and the second SRS resource set are associated with different transmission/reception points, antenna panels, or antennas of the network entity.
18 . The apparatus of claim 14 , wherein the configuration includes SRS resource set order representing the order between the first SRS resource set and the second SRS resource set.
19 . The apparatus of claim 14 , wherein a same data or transport block is transmitted on each repetition.
20 . The apparatus of claim 14 , wherein the DCI indicates support for dynamic order switching.
21 . The apparatus of claim 14 , wherein the codepoint is the fourth codepoint value that indicates that an SRS resource set with a lower SRS resource set identifier (ID) is later in time.
22 . The apparatus of claim 14 , wherein the codepoint is the third codepoint value that indicates that an SRS resource set with a higher SRS resource set identifier (ID) is later in time.
23 . The apparatus of claim 14 , wherein the network entity receives the first set of repetitions with a first set of power control parameters and the second set of repetitions with a second set of power control parameters.
24 . The apparatus of claim 14 , wherein the DCI indicates a first SRS resource indicator (SRI) for the first set of repetitions and a second SRI for the second set of repetitions.
25 . The apparatus of claim 14 , wherein the first set of repetitions is associated with a first antenna at the network entity and the second set of repetitions is associated with a second antenna at the network entity.
26 . The apparatus of claim 14 , further comprising a transceiver coupled to the at least one processor.
27 . A method of wireless communication at a user equipment (UE), comprising:
receiving a configuration of a first sounding reference signal (SRS) resource set and a second SRS resource set;
receiving, from a network entity, downlink control information (DCI) for an uplink (UL) transmission, the DCI indicating the first SRS resource set and the second SRS resource set, wherein the DCI comprises a codepoint representing an order for the first SRS resource set and the second SRS resource set, wherein the codepoint is selected from a set of four codepoint values including:
a first codepoint value that indicates the first SRS resource set is to be used,
a second codepoint value that indicates the second SRS resource set is to be used,
a third codepoint value that indicates that the first SRS resource set is to be used for a first set of repetitions, and the second SRS resource set is to be used for a second set of repetitions, and
a fourth codepoint value that indicates that the second SRS resource set is to be used for the first set of repetitions, and the first SRS resource set is to be used for the second set of repetitions; and
transmitting, to the network entity based on the DCI indicating the third codepoint value or the fourth codepoint value, the first set of repetitions of a physical uplink shared channel (PUSCH) based on the first SRS resource set and the second set of repetitions of the PUSCH based on the second SRS resource set in the order indicated by the codepoint of the DCI.
28 . A method for wireless communication at a network entity, comprising:
transmitting a configuration of a first sounding reference signal (SRS) resource set and a second SRS resource set;
transmitting, for a user equipment (UE), downlink control information (DCI) for an uplink (UL) transmission, the DCI indicating the first SRS resource set and the second SRS resource set, wherein the DCI comprises a codepoint representing an order for the first SRS resource set and the second SRS resource set, wherein the codepoint is selected from a set of four codepoint values including:
a first codepoint value that indicates the first SRS resource set is to be used,
a second codepoint value that indicates the second SRS resource set is to be used,
a third codepoint value that indicates that the first SRS resource set is to be used for a first set of repetitions, and the second SRS resource set is to be used for a second set of repetitions, and
a fourth codepoint value that indicates that the second SRS resource set is to be used for the first set of repetitions, and the first SRS resource set is to be used for the second set of repetitions; and
receiving, based on the DCI indicating the third codepoint value or the fourth codepoint value, the first set of repetitions of a physical uplink shared channel (PUSCH) based on the first SRS resource set and the second set of repetitions of the PUSCH based on the second SRS resource set in the order indicated by the codepoint of the DCI.