IP Library › Granted Patent US 12,432,742
Granted Patent B2
US 12,432,742 · App. 17/799,127 · Granted Sep 30, 2025

Terminal apparatus and communication method

Inventors: Taewoo Lee (Sakai, JP); Wataru Ouchi (Sakai, JP); Toshizo Nogami (Sakai, JP); Shoichi Suzuki (Sakai, JP); Tomoki Yoshimura (Sakai, JP); Huifa Lin (Sakai, JP); Daiichiro Nakashima (Sakai, JP)
Assignee: SHARP KABUSHIKI KAISHA
H04W72/23H04L1/1812H04L1/1887H04W72/21H04L5/0055
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Quick Facts
Patent No.
US 12,432,742
App. No.
17/799,127
Granted
Sep 30, 2025
Kind
B2
Abstract

A terminal apparatus includes a receiver configured to receive a PDCCH including DCI triggering a Type-3 HARQ-ACK codebook, and a transmitter configured to transmit a PUCCH including the Type-3 HARQ-ACK codebook triggered. A slot in which the PUCCH is transmitted is provided based on K1 obtained based on a PDSCH-to-HARQ_feedback timing indicator field included in the DCI. In a case that the DCI schedules a PDSCH, the PUCCH is transmitted the K1 slots after a slot in which the PDSCH is received. In a case that the DCI does not schedule a PDSCH, the PDCCH is transmitted in a slot after slots corresponding to the K1 from a slot in which the PDCCH is received.

Claims (30)

1. A terminal apparatus comprising:

a receiver configured to receive a Physical Downlink Control Channel (PDCCH) including Downlink Control Information (DCI), the DCI comprising a dedicated field that triggers a Type-3 Hybrid Automatic Repeat reQuest (HARQ)-ACKnowledgement (HARQ-ACK) codebook; and

a transmitter configured to transmit a Physical Uplink Control Channel (PUCCH) including the Type-3 HARQ-ACK codebook that is triggered, wherein:

a slot in which the PUCCH is transmitted is provided based on an obtained K1, wherein the K1 is a positive integer that is obtained based on a Physical Downlink Shared Channel (PDSCH)-to-HARQ feedback timing indicator field included in the DCI,

in a case that the DCI schedules a PDSCH, the PUCCH is transmitted in a slot after K1 slots from a slot in which the PDSCH is received, and

in a case that the DCI does not schedule the PDSCH, the PUCCH is transmitted in a slot after K1 slots from a slot in which the PDCCH is received.

2. The terminal apparatus according to claim 1 , wherein

the Type-3 HARQ-ACK codebook includes HARQ-ACK information of all of HARQ processes.

3. The terminal apparatus according to claim 1 , wherein

a number of slots from the slot in which the PDCCH is received to the slot in which the PDSCH is received is indicated by the DCI.

4. A base station apparatus comprising:

a transmitter configured to transmit a Physical Downlink Control Channel (PDCCH) including Downlink Control Information (DCI), the DCI comprising a dedicated field that triggers a Type-3 Hybrid Automatic Repeat reQuest (HARQ) ACKnowledgement (HARQ-ACK) codebook; and

a receiver configured to receive a Physical Uplink Control Channel (PUCCH) including the Type-3 HARQ-ACK codebook that is triggered, wherein:

a slot in which the PUCCH is received is provided based on an obtained K1, wherein the K1 is a positive integer that is obtained based on a Physical Downlink Shared Channel (PDSCH)-to-HARQ feedback timing indicator field included in the DCI,

in a case that the DCI schedules a PDSCH, the PUCCH is received in a slot after K1 slots from a slot in which the PDSCH is transmitted, and

in a case that the DCI does not schedule the PDSCH, the PUCCH is received in a slot after K1 slots from a slot in which the PDCCH is transmitted.

5. The base station apparatus according to claim 4 , wherein

the Type-3 HARQ-ACK codebook includes HARQ-ACK information of all of HARQ processes.

6. The base station apparatus according to claim 4 , wherein

a number of slots from the slot in which the PDCCH is transmitted to the slot in which the PDSCH is transmitted is indicated by the DCI.

7. A communication method used for a terminal apparatus, the communication method comprising:

receiving a Physical Downlink Control Channel (PDCCH) including Downlink Control Information (DCI), the DCI comprising a dedicated field that triggers Type-3 Hybrid Automatic Repeat reQuest (HARQ) ACKnowledgement (HARQ-ACK) codebook; and

transmitting a Physical Uplink Control Channel (PUCCH) including the Type-3 HARQ-ACK codebook that is triggered, wherein:

a slot in which the PUCCH is transmitted is provided based on an obtained K1, wherein the K1 is positive integer that is obtained based on a Physical Downlink Shared Channel (PDSCH)-to-HARQ_feedback timing indicator field included in the DCI,

in a case that the DCI schedules a PDSCH, the PUCCH is transmitted in a slot after K1 slots from a slot in which the PDSCH is received, and

in a case that the DCI does not schedule the PDSCH, the PUCCH is transmitted in a slot after K1 slots from a slot in which the PDCCH is received.

8. The communication method according to claim 7 , wherein

the Type-3 HARQ-ACK codebook includes HARQ-ACK information of all of HARQ processes.

9. The communication method according to claim 7 , wherein

a number of slots from the slot in which the PDCCH is received to the slot in which the PDSCH is received is indicated by the DCI.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2022
From: LEE, TAEWOO; OUCHI, WATARU; NOGAMI, TOSHIZO; SUZUKI, SHOICHI; YOSHIMURA, TOMOKI; LIN, HUIFA; NAKASHIMA, DAIICHIRO
To: SHARP KABUSHIKI KAISHA
Reel/Frame 060786/0418 →
Priority Claims (1)
JP 2020-022477 · Feb 13, 2020 · national
Continuity (1)
Related Publication 20230072973A1 · Mar 9, 2023
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