IP Library › Granted Patent US 12666431
Granted Patent B2
US 12666431 · App. 18/426,187 · Granted Jun 23, 2026

Communication apparatus, base station apparatus, and communication method

Inventors: Daiki Maemoto (Kariya-city, JP); Hideaki Takahashi (Kariya-city, JP)
Assignees: DENSO CORPORATION; TOYOTA JIDOSHA KABUSHIKI KAISHA
H04W72/21H04L1/1812H04L5/0012H04W72/0453H04W72/0457
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Quick Facts
Patent No.
US 12666431
App. No.
18/426,187
Granted
Jun 23, 2026
Kind
B2
Abstract

A communication apparatus comprises: a controller; and a receiver configured to receive, from a base station apparatus, a system information block 1 (SIB1), wherein in a case where first information for configuring an initial uplink bandwidth part (BWP), second information for configuring a resource of a physical uplink control channel (PUCCH) for transmission of HARQ-ACK, and third information for indicating whether or not intra-slot frequency hopping for transmission of the PUCCH is enabled are included in the SIB1, and a case where the communication apparatus does not receive information specific to the communication apparatus for configuring a resource of the PUCCH, the controller is configured to determine whether or not the intra-slot frequency hopping for transmission of the PUCCH is enabled based on the third information, and determine, based on the second information, the resource of the PUCCH on the initial uplink BWP configured based on the first information, and the first information includes information for indicating frequency domain location and bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

Claims (60)

1 . A communication apparatus comprising:

a controller; and

a receiver configured to receive, from a base station apparatus, a system information block 1 (SIB1), wherein

in a case where first information for configuring an initial uplink bandwidth part (BWP), second information for configuring a resource of a physical uplink control channel (PUCCH) for transmission of HARQ-ACK, and third information for indicating whether or not intra-slot frequency hopping for transmission of the PUCCH is enabled are included in the SIB1, and a case where the communication apparatus does not receive information specific to the communication apparatus for configuring a resource of the PUCCH, the controller is configured to determine whether or not the intra-slot frequency hopping for transmission of the PUCCH is enabled based on the third information, and determine, based on the second information, the resource of the PUCCH on the initial uplink BWP configured based on the first information, and

the first information includes information for indicating frequency domain location and bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

2 . The communication apparatus according to claim 1 , comprising

a transmitter, wherein

the transmitter is configured to

transmit, to the base station apparatus, the HARQ-ACK by using the determined resource of the PUCCH with the intra-slot frequency hopping in a case where the intra-slot frequency hopping is enabled, and

transmit, to the base station apparatus, the HARQ-ACK by using the determined resource of the PUCCH without the intra-slot frequency hopping in a case where the intra-slot frequency hopping is disabled.

3 . The communication apparatus according to claim 2 , wherein

in a case where the first information is not included in the SIB1 and fourth information for configuring the initial uplink BWP is included in the SIB1, the controller is configured to determine the initial uplink BWP based on the fourth information,

the controller is configured to enable the intra-slot frequency hopping for transmission of the PUCCH,

the transmitter is configured to transmit, to the base station apparatus, the HARQ-ACK by using a resource of the PUCCH with the intra-slot frequency hopping on the initial uplink BWP configured based on the fourth information, and

the fourth information includes information for indicating frequency domain location and bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

4 . The communication apparatus according to claim 1 , wherein

the resource of the PUCCH is mapped to one edge in the frequency domain within the initial uplink BWP, and

the controller is configured to determine an index of a physical resource block of the PUCCH based on the first information and the second information.

5 . The communication apparatus according to claim 1 , wherein

the communication apparatus is a RedCap user equipment, and

in a case where the first information is included in the SIB1 and the third information is not included in the SIB1, the controller is configured to disable the intra-slot frequency hopping of transmission of the PUCCH.

6 . A base station apparatus communicating with a communication apparatus, comprising:

a controller including, in a system information block 1 (SIB1), first information for configuring an initial uplink bandwidth part (BWP), second information for configuring a resource of a physical uplink control channel (PUCCH) for transmission of HARQ-ACK, and third information for indicating whether or not intra-slot frequency hopping for transmission of the PUCCH is enabled; and

a transmitter configured to transmit the SIB1 to the communication apparatus which does not receive information specific to the communication apparatus for configuring a resource of the PUCCH, wherein

the first information includes information for indicating frequency domain location and a bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

7 . The base station apparatus according to claim 6 , comprising a receiver wherein

the receiver is configured to

receive, from the communication apparatus, the HARQ-ACK by using the determined resource of the PUCCH with the intra-slot frequency hopping in a case where the intra-slot frequency hopping is enabled, and

receive, from the communication apparatus, the HARQ-ACK by using the determined resource of the PUCCH without the intra-slot frequency hopping in a case where the intra-slot frequency hopping is disabled.

8 . The base station apparatus according to claim 7 , wherein

in a case where the first information is not included in the SIB1 and fourth information for configuring the initial uplink BWP is included in the SIB1, the controller is configured to determine the initial uplink BWP based on the fourth information,

the controller is configured to enable the intra-slot frequency hopping for reception of the PUCCH, and

the receiver is configured to receive, from the communication apparatus, the HARQ-ACK by using a resource of the PUCCH with the intra-slot frequency hopping on the initial uplink BWP configured based on the fourth information

the fourth information includes information for indicating frequency domain location and bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

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

the resource of the PUCCH is mapped to one edge in the frequency domain within the initial uplink BWP, and

an index of a physical resource block of the PUCCH is determined on a basis of the first information and the second information.

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

the communication apparatus is a RedCap user equipment, and

in a case where the first information is included in the SIB1 and the third information is not included in the SIB1, the controller is configured to disable the intra-slot frequency hopping of transmission of the PUCCH.

11 . A communication method executed by a communication apparatus, the communication method comprising the steps of:

receiving, from a base station apparatus, a system information block 1 (SIB1); and

in a case where first information for configuring an initial uplink bandwidth part (BWP), second information for configuring a resource of a physical uplink control channel (PUCCH) for transmission of HARQ-ACK, and third information for indicating whether or not intra-slot frequency hopping for transmission of the PUCCH is enabled are included in the SIB1, and a case where the communication apparatus does not receive information specific to the communication apparatus for configuring a resource of the PUCCH, determining whether or not the intra-slot frequency hopping for transmission of the PUCCH is enabled based on the third information, and determining, based on the second information, the resource of the PUCCH on the initial uplink BWP configured based on the first information, wherein

the first information includes information for indicating frequency domain location and bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

12 . The communication method according to claim 11 , the communication method comprising the steps of:

transmitting, to the base station apparatus, the HARQ-ACK by using the determined resource of the PUCCH with the intra-slot frequency hopping in a case where the intra-slot frequency hopping is enabled; and

transmitting, to the base station apparatus, the HARQ-ACK by using the determined resource of the PUCCH without the intra-slot frequency hopping in a case where the intra-slot frequency hopping is disabled.

13 . The communication method according to claim 12 , the communication method comprising the steps of:

in a case where the first information is not included in the SIB1 and fourth information for configuring the initial uplink BWP is included in the SIB1, determining the initial uplink BWP based on the fourth information; and

enabling the intra-slot frequency hopping for transmission of the PUCCH and

transmitting, to the base station apparatus, the HARQ-ACK by using a resource of the PUCCH with the intra-slot frequency hopping on the initial uplink BWP configured based on the fourth information, wherein

the fourth information includes information for indicating frequency domain location and bandwidth of the initial uplink BWP and information for indicating a subcarrier spacing of the initial uplink BWP.

14 . The communication method according to claim 11 , wherein

the resource of the PUCCH is mapped to one edge in the frequency domain within the initial uplink BWP, and

the communication method comprising the steps of:

determining an index of a physical resource block of the PUCCH based on the first information and the second information.

15 . The communication method according to claim 11 , wherein

the communication apparatus is a RedCap user equipment, and

the communication method comprising the steps of:

in a case where the first information is included in the SIB1 and the third information is not included in the SIB1, disabling the intra-slot frequency hopping of transmission of the PUCCH.