Method and apparatus for reporting hybrid automatic repeat request-acknowledgement information in mobile communications
Various solutions for reporting hybrid automatic repeat request-acknowledgement (HARQ-ACK) information with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a first downlink control information (DCI) format indicating a first resource of physical uplink control channel (PUCCH) transmission. The apparatus may receive a second DCI format indicating a second resource of PUCCH transmission. The apparatus may determine that the receiving of the second DCI format is not earlier than a timing threshold from the first resource. The apparatus may cancel multiplexing of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information corresponding to the second DCI format in the PUCCH transmission.
1. A method, comprising:
receiving, by a processor of an apparatus, a first downlink control information (DCI) format indicating a first resource of physical uplink control channel (PUCCH) transmission;
receiving, by the processor after receiving the first DCI format, a second DCI format indicating a second resource of PUCCH transmission;
determining, by the processor, whether the second DCI format is received at least a timing threshold before the first resource; and
cancelling, by the processor, multiplexing of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information corresponding to the second DCI format in the PUCCH transmission responsive to determining that a time at which the second DCI format is received is not at least the timing threshold before the first resource.
2. The method of claim 1 , wherein at least one of the first DCI format and the second DCI format comprises a DCI format 1_0 or a DCI format 1_1.
3. The method of claim 1 , wherein the timing threshold comprises at least one of N 1 symbols, N 2 symbols, and N 3 symbols.
4. The method of claim 1 , wherein the timing threshold comprises at least one of 8 symbols, 10 symbols, 17 symbols, and 20 symbols corresponding to a first processing capability.
5. The method of claim 1 , wherein the timing threshold comprises at least one of 3 symbols, 4.5 symbols and 9 symbols corresponding to a second processing capability.
6. The method of claim 1 , wherein the determining comprises determining that a last symbol of a physical downlink control channel (PDCCH) occasion including the second DCI format is not earlier than the timing threshold from a first symbol of the first resource.
7. The method of claim 1 , further comprising:
ignoring, by the processor, the second DCI format.
8. The method of claim 1 , further comprising:
using, by the processor, a third resource of PUCCH transmission to transmit the HARQ-ACK information corresponding to the second DCI format.
9. The method of claim 1 , further comprising:
transmitting, by the processor, the HARQ-ACK information corresponding to the first DCI format in the PUCCH transmission.
10. The method of claim 1 , wherein the second resource is different from the first resource.
11. An apparatus, comprising:
a transceiver capable of wirelessly communicating with a network node of a wireless network; and
a processor communicatively coupled to the transceiver, the processor capable of:
receiving, via the transceiver, a first downlink control information (DCI) format indicating a first resource of physical uplink control channel (PUCCH) transmission;
receiving, via the transceiver after receiving the first DCI format, a second DCI format indicating a second resource of PUCCH transmission;
determining whether the second DCI format is received at least a timing threshold before the first resource; and
cancelling multiplexing of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information corresponding to the second DCI format in the PUCCH transmission responsive to determining that a time at which the second DCI format is received is not at least the timing threshold before the first resource.
12. The apparatus of claim 11 , wherein at least one of the first DCI format and the second DCI format comprises a DCI format 1_0 or a DCI format 1_1.
13. The apparatus of claim 11 , wherein the timing threshold comprises at least one of N 1 symbols, N 2 symbols, and N 3 symbols.
14. The apparatus of claim 11 , wherein the timing threshold comprises at least one of 8 symbols, 10 symbols, 17 symbols, and 20 symbols corresponding to a first processing capability.
15. The apparatus of claim 11 , wherein the timing threshold comprises at least one of 3 symbols, 4.5 symbols and 9 symbols corresponding to a second processing capability.
16. The apparatus of claim 11 , wherein, in determining that the receiving of the second DCI format is not earlier than a timing threshold from the first resource, the processor is capable of determining that a last symbol of a physical downlink control channel (PDCCH) occasion including the second DCI format is not earlier than the timing threshold from a first symbol of the first resource.
17. The apparatus of claim 11 , wherein the processor is further capable of:
ignoring the second DCI format.
18. The apparatus of claim 11 , wherein the processor is further capable of:
using a third resource of PUCCH transmission to transmit the HARQ-ACK information corresponding to the second DCI format.
19. The apparatus of claim 11 , wherein the processor is further capable of:
transmitting, via the transceiver, the HARQ-ACK information corresponding to the first DCI format in the PUCCH transmission.
20. The apparatus of claim 11 , wherein the second resource is different from the first resource.