Semipersistent reporting of channel state information
Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may receive, from a base station, downlink control information (DCI) that activates periodic channel state information (CSI) reporting via uplink shared channel transmissions (e.g., via physical uplink shared channel (PUSCH) transmissions). The UE may then identify a trigger condition that triggers a transmission of both a first instance of a CSI report and a second instance of the CSI report within a period of the periodic CSI reporting. Based on the satisfaction of the trigger condition, the UE may transmit the first instance of the CSI report via a first uplink shared channel transmission and the second instance of the CSI report via a second uplink shared channel transmission, where both uplink channel transmissions are within the period of the periodic CSI reporting.
1. A user equipment (UE), comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:
receive downlink control information (DCI) that activates semipersistent channel state information (CSI) reporting via a physical uplink shared channel (PUSCH), the DCI indicating, based at least in part on a PUSCH repetition type for the semipersistent CSI reporting, a first sounding reference signal (SRS) resource set associated with a first nominal repetition or slot for a first PUSCH repetition and a second SRS resource set associated with a second nominal repetition or slot for a second PUSCH repetition;
transmit, based at least in part on the DCI, a CSI report via both the first PUSCH repetition and the second PUSCH repetition in accordance with the first SRS resource set associated with the first nominal repetition or slot for the first PUSCH repetition and the second SRS resource set associated with the second nominal repetition or slot for the second PUSCH repetition;
refrain from transmitting a first iteration of a second CSI report corresponding to a first nominal repetition of the second CSI report based at least in part on the first nominal repetition of the second CSI report being different from a first actual repetition of the second CSI report; and
transmit a second iteration of the second CSI report corresponding to a second nominal repetition of the second CSI report based at least in part on the second nominal repetition of the second CSI report being the same as a second actual repetition of the second CSI report.
2. The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
receive an indication of a SemiPersistentOnPUSCH-TriggerStateLists parameter configuring a set of trigger states, wherein the DCI activates a trigger state of the set of trigger states based at least in part on the DCI being scrambled with a semipersistent-CSI-radio network temporary identifier (SP-CSI-RNTI), and the semipersistent CSI reporting is activated based at least in part on the DCI activating the trigger state.
3. The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
receive an indication of a SemiPersistentOnPUSCH-TriggerStateLists parameter configuring a set of trigger states, wherein the DCI comprises a field activating a trigger state of the set of trigger states, and the semipersistent CSI reporting is activated based at least in part on the field activating the trigger state.
4. The UE of claim 3 , wherein the field comprises a single bit activating the trigger state.
5. The UE of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
determine to transmit two PUSCH repetitions based at least in part on the first SRS resource set associated with the first nominal repetition or slot for the first PUSCH repetition and the second SRS resource set associated with the second nominal repetition or slot for the second PUSCH repetition, wherein the CSI report is transmitted via both the first PUSCH repetition and the second PUSCH repetition in accordance with determining to transmit the two PUSCH repetitions.
6. The UE of claim 5 , wherein a configured quantity of PUSCH repetitions for the semipersistent CSI reporting is one or greater than two.
7. A network device, comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network device to:
transmit downlink control information (DCI) that activates, for a user equipment (UE), semipersistent channel state information (CSI) reporting via a physical uplink shared channel (PUSCH), the DCI indicating, based at least in part on a PUSCH repetition type for the semipersistent CSI reporting, a first sounding reference signal (SRS) resource set associated with a first nominal repetition or slot for a first PUSCH repetition and a second SRS resource set associated with a second nominal repetition or slot for a second PUSCH repetition;
receive, based at least in part on the DCI, a CSI report for the UE via both the first PUSCH repetition and the second PUSCH repetition in accordance with the first SRS resource set associated with the first nominal repetition or slot for the first PUSCH repetition and the second SRS resource set associated with the second nominal repetition or slot for the second PUSCH repetition; and
receive a second iteration of a second CSI report corresponding to a second nominal repetition of the second CSI report based at least in part on the second nominal repetition of the second CSI report being the same as a second actual repetition of the second CSI report.
8. The network device of claim 7 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network device to:
transmit an indication of a SemiPersistentOnPUSCH-TriggerStateLists parameter configuring a set of trigger states, wherein the DCI activates a trigger state of the set of trigger states based at least in part on the DCI being scrambled with a semipersistent-CSI-radio network temporary identifier (SP-CSI-RNTI), and the semipersistent CSI reporting is activated based at least in part on the DCI activating the trigger state.
9. The network device of claim 7 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network device to:
transmit an indication of a SemiPersistentOnPUSCH-TriggerStateLists parameter configuring a set of trigger states, wherein the DCI comprises a field activating a trigger state of the set of trigger states, and the semipersistent CSI reporting is activated based at least in part on the field activating the trigger state.
10. The network device of claim 9 , wherein the field comprises a single bit activating the trigger state.
11. A method for wireless communications at a user equipment (UE), comprising:
receiving downlink control information (DCI) that activates semipersistent channel state information (CSI) reporting via a physical uplink shared channel (PUSCH), the DCI indicating, based at least in part on a PUSCH repetition type for the semipersistent CSI reporting, a first sounding reference signal (SRS) resource set associated with a first nominal repetition or slot for a first PUSCH repetition and a second SRS resource set associated with a second nominal repetition or slot for a second PUSCH repetition;
transmitting, based at least in part on the DCI, a CSI report via both the first PUSCH repetition and the second PUSCH repetition in accordance with the first SRS resource set associated with the first nominal repetition or slot for the first PUSCH repetition and the second SRS resource set associated with the second nominal repetition or slot for the second PUSCH repetition;
refraining from transmitting a first iteration of a second CSI report corresponding to a first nominal repetition of the second CSI report based at least in part on the first nominal repetition of the second CSI report being different from a first actual repetition of the second CSI report; and
transmitting a second iteration of the second CSI report corresponding to a second nominal repetition of the second CSI report based at least in part on the second nominal repetition of the second CSI report being the same as a second actual repetition of the second CSI report.
12. The method of claim 11 , further comprising:
receiving an indication of a SemiPersistentOnPUSCH-TriggerStateLists parameter configuring a set of trigger states, wherein the DCI activates a trigger state of the set of trigger states based at least in part on the DCI being scrambled with a semipersistent-CSI-radio network temporary identifier (SP-CSI-RNTI), and the semipersistent CSI reporting is activated based at least in part on the DCI activating the trigger state.
13. The method of claim 11 , further comprising:
receiving an indication of a SemiPersistentOnPUSCH-TriggerStateLists parameter configuring a set of trigger states, wherein the DCI comprises a field activating a trigger state of the set of trigger states, and the semipersistent CSI reporting is activated based at least in part on the field activating the trigger state.
14. The method of claim 13 , wherein the field comprises a single bit activating the trigger state.
15. The method of claim 11 , further comprising:
determining to transmit two PUSCH repetitions based at least in part on the first SRS resource set associated with the first nominal repetition or slot for the first PUSCH repetition and the second SRS resource set associated with the second nominal repetition or slot for the second PUSCH repetition, wherein the CSI report is transmitted via both the first PUSCH repetition and the second PUSCH repetition in accordance with determining to transmit the two PUSCH repetitions.
16. The method of claim 15 , wherein a configured quantity of PUSCH repetitions for the semipersistent CSI reporting is one or greater than two.
17. The network device of claim 7 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the network device to:
transmit an indication of a configured quantity of PUSCH repetitions for the semipersistent CSI reporting, wherein the CSI report for the UE is received via both the first PUSCH repetition and the second PUSCH repetition regardless of the configured quantity of PUSCH repetitions.
18. The network device of claim 17 , wherein the configured quantity of PUSCH repetitions is one or greater than two.