Terminal device, base station device, communication method, and storage medium

Inventor: Kazuyuki Shimezawa (Kanagawa, JP)

Assignee: SONY GROUP CORPORATION

H04W8/30 H04L1/0063 H04L1/1819 H04W68/005 H04W72/23 H04W76/11 H04W76/27

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Quick Facts

Patent No.: US 12696081
App. No.: 18/631,479
Filed: Apr 10, 2024
Granted: Jul 28, 2026
Kind: B2
Examiner: OH, ANDREW CHUNG SUK
Art Unit: 2466
USPC: 370/329

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Abstract

To greatly improve transmission efficiency of an entire system by improving reliability while ensuring low delay with respect to notification of response information in a communication system in which a base station device and a terminal device communicate with each other. A terminal device that communicates with a base station device, the terminal device including: a reception unit that receives a data channel including one or more pieces of data; and a transmission unit that transmits response information to the data on the basis of a parameter regarding reliability of the data.

Claims (36)

1 . A terminal device that communicates with a base station device, the terminal device comprising:

circuitry configured to:

receive, from the base station device, a downlink control channel including scheduling information and priority information,

receive from the base station a downlink data channel based on the scheduling information and the priority information,

transmit response information relative to the downlink data channel to the base station device via a first uplink control channel or a second uplink control channel,

wherein, based on the priority information indicating a high priority, the response information is transmitted via the first uplink control channel,

based on the priority information indicating a low priority lower than the high priority, the response information is transmitted via the second uplink control channel,

the response information that is transmitted via the first uplink control channel or the second uplink control channel is repeated in a configured number of slots configured by RRC signaling, and in a case that transmission of response information is to be reduced, the first uplink control channel is transmitted and the second uplink control channel is not transmitted.

2 . The terminal device according to claim 1 , wherein the response information that is transmitted via the first uplink control channel or the second uplink control channel is repeated in a configured number of slots.

3 . The terminal device according to claim 2 , wherein a number of repetitions used for the first uplink control channel and a number of repetitions used for the second uplink control channel are independently configured.

4 . The terminal device according to claim 1 , wherein in a case that transmission of response information is to be reduced, the first uplink control channel is transmitted and the second uplink control channel is not transmitted.

5 . The terminal device according to claim 1 , wherein a modulation scheme used in the first uplink control channel and a modulation scheme used in the second uplink control channel are independently configured.

6 . The terminal device according to claim 1 , wherein resource sizes for the first uplink control channel and for the second uplink control channel are independently configured.

7 . The terminal device according to claim 1 , wherein a number of symbols used for the first uplink control channel and a number of symbols used for the second uplink control channel are independently configured.

8 . A method of operating a terminal device that communicates with a base station device, comprising;

receiving, by the terminal device and from the base station device, a downlink control channel including scheduling information and priority information,

receiving, by the terminal device and from the base station, a downlink data channel based on the scheduling information and the priority information,

transmitting, from the terminal device to the base station device, response information relative to the downlink data channel to the base station device via a first uplink control channel or a second uplink control channel,

wherein, based on the priority information indicating a high priority, the response information is transmitted via the first uplink control channel,

based on the priority information indicating a low priority lower than the high priority, the response information is transmitted via the second uplink control channel,

9 . The communication system according to claim 8 , wherein the response information that is transmitted via the first uplink control channel or the second uplink control channel is repeated in a configured number of slots.

10 . The communication system according to claim 8 , wherein in a case that transmission of response information is to be reduced, the first uplink control channel is transmitted and the second uplink control channel is not transmitted.

11 . The terminal device according to claim 8 , wherein a modulation scheme used in the first uplink control channel and a modulation scheme used in the second uplink control channel are independently configured.

12 . The terminal device according to claim 8 , wherein resource sizes for the first uplink control channel and for the second uplink control channel are independently configured.

13 . The terminal device according to claim 8 , wherein a number of symbols used for the first uplink control channel and a number of symbols used for the second uplink control channel are independently configured.

14 . A communication system, comprising:

a base station device; and

a terminal device, the terminal device including processing circuitry configured to:

receive, from the base station device, a downlink control channel including scheduling information and priority information,

receive from the base station a downlink data channel based on the scheduling information and the priority information,

transmit response information relative to the downlink data channel to the base station device via a first uplink control channel or a second uplink control channel,

wherein, based on the priority information indicating a high priority, the response information is transmitted via the first uplink control channel,

based on the priority information indicating a low priority lower than the high priority, the response information is transmitted via the second uplink control channel,

15 . The communication system according to claim 14 , wherein a number of repetitions used for the first uplink control channel and a number of repetitions used for the second uplink control channel are independently configured.