Downlink feedback information with physical downlink control channel repetition
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive a set of physical downlink control channel (PDCCH) candidates, wherein the set of PDCCH candidates are linked for PDCCH repetition. The mobile station may detect downlink control information (DCI) carrying downlink feedback information (DFI) in one or more PDCCH candidates. The mobile station may identify a PDCCH candidate as a reference PDCCH candidate based at least in part on the PDCCH candidate satisfying one or more criteria. The mobile station may determine whether the DFI is valid for a physical uplink shared channel (PUSCH) transmission based at least in part on whether a last symbol of the PUSCH transmission is at least a particular quantity of symbols prior to a first symbol of the reference PDCCH candidate. Numerous other aspects are described.
1. A mobile station for wireless communication, comprising:
one or more memories; and
one or more processors, individually or collectively coupled to the one or more memories and based at least in part on information stored in the one or more memories, configured to:
transmit a physical uplink shared channel (PUSCH); and
receive downlink control information (DCI) carrying downlink feedback information (DFI) in one or more physical downlink control channel (PDCCH) candidates of a set of PDCCH candidates,
wherein the set of PDCCH candidates are linked for PDCCH repetition, and
wherein the mobile station determines whether feedback information for a transport block of a corresponding hybrid automatic repeat request (HARQ) process number in the DFI is valid for a transmission of the PUSCH based at least in part on whether a last symbol of the transmission of the PUSCH is at least a particular quantity of symbols prior to a first symbol of a PDCCH candidate of the set of PDCCH candidates,
wherein at least one of:
the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates, or
the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
2. The mobile station of claim 1 , wherein the DCI is associated with a DCI format 0_1 and a cyclic redundancy check (CRC) scrambled by a configured scheduling radio network temporary identifier (CS-RNTI), and wherein a DFI flag field of the DCI is set to a first value indicating that the DCI includes the DFI.
3. The mobile station of claim 1 , wherein the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
4. The mobile station of claim 1 , wherein the PDCCH candidate starts latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
5. The mobile station of claim 1 , wherein the PDCCH candidate ends earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
6. The mobile station of claim 1 , wherein the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
7. The mobile station of claim 1 , wherein the one or more processors are further configured to:
identify the PDCCH candidate as a reference PDCCH candidate based at least in part on the PDCCH candidate satisfying one or more criteria.
8. The mobile station of claim 7 , wherein the PDCCH candidate satisfies the one or more criteria based at least in part on the PDCCH candidate starting earliest in time relative to the other PDCCH candidates of the set of PDCCH candidates.
9. A method of wireless communication performed by a mobile station, comprising:
transmitting a physical uplink shared channel (PUSCH); and
receiving, by the mobile station, downlink control information (DCI) carrying downlink feedback information (DFI) in one or more physical downlink control channel (PDCCH) candidates of a set of PDCCH candidates,
wherein the set of PDCCH candidates are linked for PDCCH repetition, and
wherein the mobile station determines whether feedback information for a transport block of a corresponding hybrid automatic repeat request (HARQ) process number in the DFI is valid for a transmission of the PUSCH based at least in part on whether a last symbol of the transmission of the PUSCH is at least a particular quantity of symbols prior to a first symbol of a PDCCH candidate of the set of PDCCH candidates,
wherein at least one of:
the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates, or
the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
10. The method of claim 9 , wherein the DCI is associated with a DCI format 0_1 and a cyclic redundancy check (CRC) scrambled by a configured scheduling radio network temporary identifier (CS-RNTI), and wherein a DFI flag of the DCI is set to a first value indicating that the DCI includes the DFI.
11. The method of claim 9 , wherein the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
12. The method of claim 9 , wherein the PDCCH candidate starts latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
13. The method of claim 9 , wherein the PDCCH candidate ends earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
14. The method of claim 9 , wherein the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
15. The method of claim 9 , further comprising:
identifying the PDCCH candidate as a reference PDCCH candidate based at least in part on the PDCCH candidate satisfying one or more criteria.
16. The method of claim 15 , wherein the PDCCH candidate satisfies the one or more criteria based at least in part on the PDCCH candidate starting earliest in time relative to the other PDCCH candidates of the set of PDCCH candidates.
17. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a mobile station, cause the mobile station to:
transmit a physical uplink shared channel (PUSCH); and
receive downlink control information (DCI) carrying downlink feedback information (DFI) in one or more physical downlink control channel (PDCCH) candidates of the set of PDCCH candidates,
wherein the set of PDCCH candidates are linked for PDCCH repetition, and
wherein the mobile station determines whether feedback information for a transport block of a corresponding hybrid automatic repeat request (HARQ) process number in the DFI is valid for a transmission of the PUSCH based at least in part on whether a last symbol of the transmission of the PUSCH is at least a particular quantity of symbols prior to a first symbol of a PDCCH candidate of the set of PDCCH candidates,
wherein at least one of:
the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates, or
the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
18. The non-transitory computer-readable medium of claim 17 , wherein the DCI is associated with a DCI format 0_1 and a cyclic redundancy check (CRC) scrambled by a configured scheduling radio network temporary identifier (CS-RNTI), and wherein a DFI flag of the DCI is set to a first value indicating that the DCI includes the DFI.
19. The non-transitory computer-readable medium of claim 17 , wherein the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
20. The non-transitory computer-readable medium of claim 17 , wherein the PDCCH candidate starts latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
21. The non-transitory computer-readable medium of claim 17 , wherein the PDCCH candidate ends earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
22. The non-transitory computer-readable medium of claim 17 , wherein the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
23. The non-transitory computer-readable medium of claim 17 , wherein the one or more instructions that, when executed by one or more processors of a mobile station, further cause the mobile station to:
identify the PDCCH candidate as a reference PDCCH candidate based at least in part on the PDCCH candidate satisfying one or more criteria.
24. The non-transitory computer-readable medium of claim 23 , wherein the PDCCH candidate satisfies the one or more criteria based at least in part on the PDCCH candidate starting earliest in time relative to the other PDCCH candidates of the set of PDCCH candidates.
25. An apparatus for wireless communication, comprising:
means for transmitting a physical uplink shared channel (PUSCH); and
means for receiving downlink control information (DCI) carrying downlink feedback information (DFI) in one or more physical downlink control channel (PDCCH) candidates of a set of PDCCH candidates,
wherein the set of PDCCH candidates are linked for PDCCH repetition, and
wherein the apparatus determines whether feedback information for a transport block of a corresponding hybrid automatic repeat request (HARQ) process number in the DFI is valid for a transmission of the PUSCH based at least in part on whether a last symbol of the transmission of the PUSCH is at least a particular quantity of symbols prior to a first symbol of a PDCCH candidate of the set of PDCCH candidates,
wherein at least one of:
the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates, or
the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
26. The apparatus of claim 25 , wherein the DCI is associated with a DCI format 0_1 and a cyclic redundancy check (CRC) scrambled by a configured scheduling radio network temporary identifier (CS-RNTI), and wherein a DFI flag of the DCI is set to a first value indicating that the DCI includes the DFI.
27. The apparatus of claim 25 , wherein the PDCCH candidate starts latest in time relative to other PDCCH candidates of the set of PDCCH candidates.
28. The apparatus of claim 25 , wherein the PDCCH candidate starts earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
29. The apparatus of claim 25 , wherein the PDCCH candidate ends earliest in time relative to other PDCCH candidates of the set of PDCCH candidates.
30. The apparatus of claim 25 , wherein the PDCCH candidate ends latest in time relative to other PDCCH candidates of the set of PDCCH candidates.