US 12,712,696 B2Granted

Apparatus and method for performing hybrid automatic repeat request operation in wireless communication system supporting carrier aggregation

AssigneeInnovative Technology Lab Co., Ltd.

InventorDong Hyun Park

Life of this patent

Estimating the term…

Loading patent…

Abstract

Provided is a method of performing HARQ by a UE in a wireless communication system that supports carrier aggregation (CA). The method includes: receiving, from an evolved nodeB (eNB), a downlink grant on a first Physical Downlink Control Channel (PDCCH), the downlink grant including an accumulated downlink assignment indicator (A-DAI) field and a total DAI (T-DAI) field; receiving a first PDSCH indicated by the first PDCCH, the first PDSCH being transmitted from the eNB; receiving, from the eNB, an uplink grant on a second PDCCH, the uplink grant indicating a transmission of a Physical Uplink Shared Channel (PUSCH); determining a size of a HARQ-ACK codebook to which a HARQ-ACK with respect to the first PDSCH is to be mapped, based on the A-DAI and the T-DAI; and transmitting, to the eNB, the HARQ-ACK with respect to the first PDSCH on the PUSCH.

Claims19

Dependent claims

One or more computing devices comprising:

one or more antennas;
one or more processors;
and
one or more memories storing instructions that, when executed by the one or more processors, cause the one or more computing devices to:
transmit, via 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, wherein a value of the first T-DAI field indicates an integer T1, wherein a 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;
transmit, via 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, wherein a value of the second T-DAI field indicates the integer T1, and wherein a value of the second A-DAI field indicates an integer B smaller than or equal to the integer T1;
transmit a first PDSCH indicated by the first PDCCH and transmit a second PDSCH indicated by the second PDCCH, wherein the integer B is the highest value among values indicated by A-DAI field values associated with PDCCHs-transmitted in the first subframe;
transmit, to a wireless user device, 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 one of the plurality of T-DAI values, and wherein the one of the plurality of T-DAI values is the closest integer to the integer B;
and
receive, via the PUSCH, the HARQ-ACK associated with the first PDSCH and the HARQ-ACK associated with the second PDSCH.

8 more elements

One or more computing devices comprising:

one or more antennas;
one or more processors;
and
one or more memories storing instructions that, when executed by the one or more processors, cause the one or more computing devices to:
transmit, via 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, wherein a value of the first T-DAI field indicates an integer T1, and wherein a value of the first A-DAI field indicates an integer A smaller than or equal to the integer T1;
transmit, via 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, wherein a value of the second T-DAI field indicates the integer T1, and wherein a value of the second A-DAI field indicates an integer B smaller than or equal to the integer T1;
transmit, to a wireless user device, a first PDSCH indicated by the first PDCCH and transmit a second PDSCH indicated by the second PDCCH;
transmit 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 determining the size of the HARQ-ACK comprises determining to increase the size of the HARQ-ACK codebook based on one or more downlink semi persistent scheduling (SPS) PDSCH transmissions;
and
receive, via the PUSCH, the HARQ-ACK associated with the first PDSCH and the HARQ-ACK associated with the second PDSCH.

8 more elements

One or more computing devices comprising:

one or more antennas;
one or more processors;
and
one or more memories storing instructions that, when executed by the one or more processors, cause the one or more computing devices to:
transmit, via 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, wherein a value of the first T-DAI field indicates an integer T1, and wherein a value of the first A-DAI field indicates an integer A smaller than or equal to the integer T1;
transmit, via 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, wherein a value of the second T-DAI field indicates the integer T1, and wherein a value of the second A-DAI field indicates an integer B smaller than or equal to the integer T1;
transmit, via a third serving cell and via a third PDCCH in a second subframe, a third downlink grant comprising a third A-DAI field and a third T-DAI field, wherein a value of the third T-DAI field indicates an integer T2, and wherein a value of the third A-DAI field indicates an integer C larger than the integer T1 and smaller than or equal to the integer T2;
transmit, via a fourth serving cell and via a fourth PDCCH in the second subframe, a fourth downlink grant comprising a fourth A-DAI field and a fourth T-DAI field, wherein a value of the fourth T-DAI field indicates the integer T2, and wherein a value of the fourth A-DAI field indicates an integer D larger than the integer T1 and smaller than or equal to the integer T2;
transmit a first PDSCH indicated by the first PDCCH and transmit a second PDSCH indicated by the second PDCCH;
transmit 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;
and
receive, via the PUSCH, the HARQ-ACK associated with the first PDSCH and the HARQ-ACK associated with the second PDSCH,
wherein the first T-DAI field and the second T-DAI field indicate that total T1 number of downlink channels, comprising PDSCHs indicated by PDCCHs and comprising PDCCH indicating downlink semi persistent scheduling (SPS) release, are scheduled for a wireless user device in the first subframe, and
wherein PDCCHs comprising values of A-DAI and T-DAI are transmitted, in the first subframe, from total T1 number of different serving cells.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/403,528Filed 3 Jan 2024 · continuation
Priority: KR 10-2015-01560386 Nov 2015
Published: US 2024/0187195 A16 Jun 2024
Granted: 18 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04L 1/0073
Error control for data other than payload data, e.g. control data: special arrangements for feedback channel
H04L 5/0055
Allocation of signalling, i.e. of overhead other than pilot signals: physical resource allocation for ACK/NACK
H04B 7/0413
Using two or more spaced independent antennas: mIMO systems
H04L 1/0046
Arrangements at the receiver end: code rate detection or code type detection

Family

Application15/344,436Parent of this continuation · filed 4 Nov 2016
Application16/525,292Parent of this continuation · filed 29 Jul 2019
US 10,404,438 B2Parent of this continuation · filed 3 Sep 2019
Application17/329,152Parent of this continuation · filed 25 May 2021
US 11,050,542 B2Parent of this continuation · filed 29 Jun 2021
US 2024/0187195 A1Pre-grant publication · published 6 Jun 2024
US 11,902,211 B2Parent of this continuation
US 2017/0134140 A1Published application
US 2019/0356456 A1Published application
US 2021/0281379 A1Published application
US 12,712,696 B2This patent

From the US filing history. Foreign family members aren’t listed.