Granted Patent B2

US 12,739,848 · App. 18/261,393 · Granted Sep 15, 2026

Inventors: Yi Wang (Beijing, CN); Sa Zhang (Beijing, CN)

Assignee: Samsung Electronics Co., Ltd

H04W72/232H04L1/1861H04W72/1273

Abstract

Claims (42)

1 . A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving a physical downlink control channel (PDCCH) including downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCHs);

receiving the one or more PDSCHs based on the DCI; and

transmitting a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for the one or more PDSCHs,

wherein the DCI includes time resource allocation information associated with a PDSCH time domain resource allocation (TDRA) table T,

wherein a candidate PDSCH receiving position for placing each HARQ-ACK bit in the HARQ-ACK codebook is determined based on a set of time offsets and a set of rows associated with the PDSCH TDRA table T, and

wherein for a row of the PDSCH TDRA table T including more than one start and length indicator value (SLIV) entries:

the set of time offsets is determined based on (i) a timing value between a PDSCH associated with the more than one SLIV entries and the transmission of the HARQ-ACK codebook and (ii) a difference between a slot where a last PDSCH of PDSCHs corresponding to the more than one SLIV entries is located and a slot where each of the PDSCHs is located, and

the set of rows associated with the PDSCH TDRA table T includes a union of rows corresponding to the more than one SLIV entries.

2 . The method of claim 1 , wherein the timing value is indicated by the DCI.

3 . The method of claim 1 , wherein the slot where each of the PDSCHs is located is identified based on the PDSCH TDRA table T.

4 . The method of claim 1 , wherein, in a slot/sub-slot n pdsch where the candidate PDSCH receiving position is located, the candidate PDSCH receiving position is determined based on a valid SLIV in the PDSCH TDRA Table T in the slot/sub-slot.

5 . The method of claim 4 , wherein, the valid SLIV is determined based on at least one of:

a PDCCH monitoring occasion and a slot parameter K0 in the PDSCH TDRA table T,

whether there are multiple PDSCHs or a single PDSCH in a row of the PDSCH TDRA table T,

whether a slot or a sub-slot where an ending symbol of a last PDSCH is located is in a set of slots or sub-slots n pdsch of the candidate PDSCH receiving position, or

an uplink and downlink configuration.

6 . The method of claim 4 , wherein, for an i-th row in the PDSCH TDRA table T, SLIVs according to Np PDSCHs, where Np>0, are collectively used as one SLIV ri to determine the candidate PDSCH receiving position.

7 . The method of claim 6 , wherein, in case that multiple SLIV ri s overlap, a candidate PDSCH receiving position unit is determined according to one of the multiple SLIV ri s, and

wherein the candidate PDSCH receiving position unit includes one or more candidate PDSCH receiving positions.

8 . The method of claim 7 , wherein a number of the one or more candidate PDSCH receiving positions included in the candidate PDSCH receiving position unit corresponding to a SLIV ri is determined according to at least one of:

a number of PDSCHs included in the SLIV ri ,

a maximum value of a number of PDSCHs included in each SLIV ri corresponding to a same candidate PDSCH receiving position unit of the SLIV ri , or

a maximum value of a number of PDSCHs included in each SLIV ri .

9 . The method of claim 1 , wherein the DCI includes information on a HARQ process identifier (ID) applied to a first PDSCH among the one or more PDSCHs, and

wherein HARQ process IDs for PDSCHs other than the first PDSCH among the one or more PDSCHs are increased by 1 according to an order of the PDSCHs other than the first PDSCH.

10 . The method of claim 9 , wherein in case that a symbol of a PDSCH among the one or more PDSCHs overlaps with an uplink symbol configured semi-statically, a HARQ process ID of the PDSCH is not incremented.

11 . The method of claim 1 , wherein the timing value indicates an offset between the last PDSCH and the transmission of the HARQ-ACK codebook.

12 . The method of claim 1 ,

wherein the DCI includes a first field indicating a new data indicator (NDI) and a second field indicating a redundancy version (RV) for the one or more PDSCHs, and

wherein a number of bits of each of the first field and the second field is determined based on a maximum number of SLIVs which is indicatable in a row of the PDSCH TDRA table T.

13 . A user equipment (UE) in a wireless communication system, the UE comprising:

a transceiver configured to transmit and receive signals; and

a controller coupled with the transceiver and configured to:

receive a physical downlink control channel (PDCCH) including downlink control information (DCI) for scheduling one or more physical downlink shared channels (PDSCHs),

receive the one or more PDSCHs based on the DCI, and

transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for the one or more PDSCHs,

wherein the DCI includes time resource allocation information associated with a PDSCH time domain resource allocation (TDRA) table T,

wherein a candidate PDSCH receiving position for placing each HARQ-ACK bit in the HARQ-ACK codebook is determined based on a set of time offsets and a set of rows associated with the PDSCH TDRA table T, and

wherein for a row of the PDSCH TDRA table T including more than one start and length indicator value (SLIV) entries:

the set of time offsets is determined based on (i) a timing value between a PDSCH associated with the more than one SLIV entries and the transmission of the HARQ-ACK codebook and (ii) a difference between a slot where a last PDSCH of PDSCHs corresponding to the more than one SLIV entries is located and a slot where each of the PDSCHs is located, and

the set of rows associated with the PDSCH TDRA table T includes a union of rows corresponding to the more than one SLIV entries.

Assignments (1)

Priority Claims (4)

Continuity (1)

References Cited (18)