Granted Patent B2

US 12,432,016 · App. 17/979,420 · Granted Sep 30, 2025

Inventors: Xincai Li (Shenzhen, CN); Li Tian (Shenzhen, CN)

Assignee: ZTE Corporation

H04L1/1861H04L1/1812H04L5/0055H04W72/23

Abstract

Claims (58)

1. A method of configuring hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback for physical downlink shared channel (PDSCH) transmission in wireless communication, the method comprising:

receiving, by a user equipment (UE), a radio resource control (RRC) parameter to configure a one-shot HARQ-ACK feedback;

receiving, by the UE, a medium access control (MAC) control element (CE) indicating a list of activated serving cells;

receiving, by the UE, a downlink control information (DCI) comprising a one-shot request field with a positive value, wherein the DCI triggers a one-shot HARQ-ACK codebook determined by the UE according to the list of activated serving cells indicated by the MAC CE; and

transmitting, by the UE, a one-shot HARQ-ACK feedback for the list of activated serving cells,

wherein, in response to that the UE has previously transmitted HARQ-ACK information for a transport block (TB) t for a HARQ process number h on a serving cell c, and has not been scheduled for reception of another PDSCH corresponding to the TB t for the HARQ process number h on the serving cell c since a previous HARQ-ACK report, the UE does not report HARQ-ACK information for the HARQ process number h on the serving cell c in the one-shot HARQ-ACK codebook.

2. The method according to claim 1 , wherein:

the one-shot request field with a positive value comprises the one-shot request field with a value of 1; and

the RRC parameter to configure the one-shot HARQ-ACK feedback comprises a pdsch-HARQ-ACK-Codebook with pdsch-HARQ-ACK-OneShotFeedback-r16 enabled.

3. A method of configuring hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback for physical downlink shared channel (PDSCH) transmission in wireless communication, the method comprising:

receiving, by a user equipment (UE), a radio resource control (RRC) parameter to configure a one-shot HARQ-ACK feedback;

receiving, by the UE, a downlink control information (DCI) comprising a one-shot request field with a positive value, the DCI triggering a one-shot HARQ-ACK codebook; and

in response to at least one HARQ process satisfying a preset condition, transmitting, by the UE, a one-shot HARQ-ACK codebook determined according to the at least one HARQ process,

wherein the at least one HARQ process satisfying the preset condition comprises: in response to the DCI comprises a bit field associated with the one-shot HARQ-ACK feedback, the bit field comprises a group index indicating one of M HARQ process groups as the at least one HARQ process, M being a positive integer, and wherein HARQ processes are divided into the M HARQ process groups, and wherein the bit field comprises ceil (log 2 M) bits, ceil ( ) being a ceiling function.

4. The method according to claim 3 , wherein:

the one-shot request field with a positive value comprises the one-shot request field with a value of 1; and

the RRC parameter indicating the one-shot HARQ-ACK feedback mode-comprises a pdsch-HARQ-ACK-Codebook with pdsch-HARQ-ACK-OneShotFeedback-r16 enabled.

5. The method according to claim 3 , wherein:

the DCI comprises a priority index; and

the at least one HARQ process satisfying the preset condition comprises the at least one HARQ process having a same priority index as the priority index in the DCI.

6. The method according to claim 3 , wherein:

each of the at least one HARQ process comprises an offset value in timeline, the offset value being no larger than a predefined value; and

the at least one HARQ process satisfying the preset condition comprises the offset value in timeline of each of the at least one HARQ process being no larger than a predefined value.

7. The method according to claim 3 , wherein:

the UE receives an RRC message comprising a size indication indicating a size of a time window before the DCI triggering the one-shot HARQ-ACK codebook; and

the at least one HARQ process satisfying the preset condition further comprises that a PDSCH corresponding to each of the at least one HARQ process is being transmitted in the time window.

8. The method of claim 3 , wherein:

the DCI does not schedule PDSCH; and

a modulation and coding scheme in the DCI is used as the bit field associated with the one-shot HARQ-ACK feedback.

9. A method for wireless communication, comprising:

configuring hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback for physical downlink shared channel (PDSCH) transmission by:

receiving, by a user equipment (UE), a radio resource control (RRC) parameter to configure a one-shot HARQ-ACK feedback;

receiving, by the UE, a downlink control information (DCI) comprising a one-shot request field with a positive value, the DCI triggering a one-shot HARQ-ACK feedback; and

transmitting, by the UE, a first one-shot HARQ-ACK feedback with a first one-shot HARQ-ACK codebook for at least one non-semi-persistent scheduling (non-SPS) PDSCH and a second one-shot HARQ-ACK feedback with a second one-shot HARQ-ACK codebook for at least one SPS PDSCH.

10. The method according to claim 9 , wherein:

the DCI comprises a value of K; and

the UE transmits the first one-shot HARQ-ACK codebook for the at least one non-SPS PDSCH in a slot or subslot at K slots or subslots after PDSCH corresponding to the DCI.

11. The method according to claim 9 , wherein:

a PUCCH resource indicator (PRI) of PUCCH transmission carrying the second one-shot HARQ-ACK codebook for the at least one SPS PDSCH is same as indicated in the DCI.

12. The method according to claim 9 , wherein:

the second one-shot HARQ-ACK feedback for the at least one SPS PDSCH does not comprise new data indication (NDI) with a configured pdsch-HARQ-ACK-OneShotFeedbackNDI-r16.

13. An apparatus comprising:

a memory storing instructions; and

a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to perform the method according to claim 1 .

14. An apparatus comprising:

a memory storing instructions; and

a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to perform the method according to claim 3 .

15. An apparatus comprising:

a memory storing instructions; and

a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to perform the method according to claim 9 .

16. A method of configuring hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback for physical downlink shared channel (PDSCH) transmission in wireless communication, the method comprising:

transmitting, by a base station to a user equipment (UE), a radio resource control (RRC) parameter to configure a one-shot HARQ-ACK feedback;

transmitting, by the base station to the UE, a downlink control information (DCI) comprising a one-shot request field with a positive value, the DCI triggering a one-shot HARQ-ACK codebook; and

receiving, by the base station, a one-shot HARQ-ACK codebook determined according to at least one HARQ process from the UE in response to the at least one HARQ process satisfying a preset condition,

wherein the at least one HARQ process satisfying the preset condition comprises: in response to the DCI comprises a bit field associated with the one-shot HARQ-ACK feedback, the bit field comprises a group index indicating one of M HARQ process groups as the at least one HARQ process, M being a positive integer, and wherein HARQ processes are divided into the M HARQ process groups, and wherein the bit field comprises ceil (log 2 M) bits, ceil ( ) being a ceiling function.

17. The method of claim 16 , wherein:

the DCI does not schedule PDSCH; and

a modulation and coding scheme in the DCI is used as the bit field associated with the one-shot HARQ-ACK feedback.

Assignments (1)

Continuity (2)

References Cited (25)