Patent ID: 11902211
Assignee: INNOVATIVE TECHNOLOGY LAB CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A non-transitory computer-readable medium storing instructions that, when executed by one or more processors, cause a wireless user device to:
receive, from a first serving cell and via a first Physical Downlink Control Channel (PDCCH) in a first subframe, a first downlink grant comprising a first accumulated downlink assignment indicator (A-DAI) field and a first total DAI (T-DAI) field;
receive, from a second serving cell and via a second PDCCH in the first subframe, a second downlink grant comprising a second A-DAI field and a second T-DAI field;
determine a value of the first A-DAI field and a value of the first T-DAI field, wherein the value of the first T-DAI field indicates an integer T1, wherein the value of the first A-DAI field indicates an integer A smaller than or equal to the integer T1, and wherein the value of the first T-DAI field is mapped to a set including a plurality of T-DAI values;
determine a value of the second A-DAI field and a value of the second T-DAI field, wherein the value of the second T-DAI field indicates the integer T1, and wherein the value of the second A-DAI field indicates an integer B smaller than or equal to the integer T1;
receive a first PDSCH indicated by the first PDCCH and receive a second PDSCH indicated by the second PDCCH;
determine that the integer B is the highest value among values indicated by A-DAI field values determined from PDCCHs received in the first subframe;
determine one of the plurality of T-DAI values, wherein the determined one of the plurality of T-DAI values is the closest integer to the integer B;
receive an uplink grant indicating a transmission of a Physical Uplink Shared Channel (PUSCH);
determine a size of a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook to which an HARQ-ACK associated with the first PDSCH and an HARQ-ACK associated with the second PDSCH are to be mapped, wherein the size of the HARQ-ACK codebook is determined based on the determined one of the plurality of T-DAI values; and
transmit, via the PUSCH, the HARQ-ACK associated with the first PDSCH and the HARQ-ACK associated with the second PDSCH.