Granted Patent B2

US 12,598,028 · App. 17/311,497 · Granted Apr 7, 2026

Inventors: Shohei Yoshioka (Tokyo, JP); Satoshi Nagata (Tokyo, JP); Huan Wang (Beijing, CN)

Assignee: NTT DOCOMO, INC.

H04L1/1819H04L5/0053H04W72/0473H04W72/20

Abstract

Claims (17)

1 . A communication apparatus comprising:

a transmitter that transmits an inter-terminal direct communication feedback channel including a Hybrid Automatic Repeat Request (HARQ) response;

a processor that:

in a case where a transmission occasion of the inter-terminal direct communication feedback channel overlaps a transmission occasion of another inter-terminal direct communication feedback channel, determines, based on priority assigned to each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel, whether to transmit each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel; and

after the determination based on the priority, further performs control whether to transmit each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel based on transmission power based on downlink control information (DCI),

wherein the transmitter transmits, based on the control performed by the processor, the inter-terminal direct communication feedback channel;

the transmitter transmits another inter-terminal direct communication channel, the another inter-terminal direct communication channel being Physical Sidelink Shared Channel (PSSCH); and

the processor controls to transmit the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel by performing time division multiplexing.

2 . The communication apparatus according to claim 1 , wherein

the processor controls, based on inter-terminal direct communication control information (SCI), to transmit or not to transmit each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel.

3 . A communication method of a communication apparatus, the communication method comprising:

transmitting an inter-terminal direct communication feedback channel including a Hybrid Automatic Repeat Request (HARQ) response;

in a case where a transmission occasion of an inter-terminal direct communication feedback channel overlaps a transmission occasion of another inter-terminal direct communication feedback channel, determining, based on priority assigned to each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel, whether to transmit each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel;

after the determination based on the priority, performing control to whether to transmit each of the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel based on transmission power based on downlink control information (DCI);

transmitting the inter-terminal direct communication feedback channel based on the control;

transmitting another inter-terminal direct communication channel, the another inter-terminal direct communication channel being Physical Sidelink Shared Channel (PSSCH); and

controlling to transmit the inter-terminal direct communication feedback channel and the another inter-terminal direct communication feedback channel by performing time division multiplexing.

Assignments (2)

Continuity (1)

References Cited (24)