IP Library › Granted Patent US 12684616
Granted Patent B2
US 12684616 · App. 18/685,724 · Granted Jul 14, 2026

Terminal and communication method

Inventors: Shohei Yoshioka (Tokyo, JP); Naoya Shibaike (Tokyo, JP); Shinya Kumagai (Tokyo, JP); Satoshi Nagata (Tokyo, JP)
Assignee: NTT DOCOMO, INC.
H04W74/0808H04W16/14
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Quick Facts
Patent No.
US 12684616
App. No.
18/685,724
Granted
Jul 14, 2026
Kind
B2
Abstract

A terminal includes: a reception unit configured to receive a control channel and a shared channel in an unlicensed band from another terminal; a control unit configured to perform an LBT (Listen before talk) for a period in a symbol immediately before a resource of a feedback channel corresponding to the shared channel or in a first symbol of the resource of the feedback channel; and a transmission unit configured to transmit a feedback to the another terminal in the resource of the feedback channel in a case where a power exceeding a threshold value is not detected in the LBT.

Claims (11)

1 . A terminal comprising:

a receiver configured to receive, from another terminal, a control channel and a shared channel in a resource pool in a frequency band in which Listen Before Talk (LBT) is performed in channel access;

a processor configured to perform LBT in each of a plurality of bands before transmitting a feedback channel corresponding to the shared channel; and

a transmitter configured to transmit the feedback channel in a band in which LBT is successful among the plurality of bands,

wherein the processor performs LBT, prior to transmission of the feedback channel, during a time period determined based on an indication related to LBT that is indicated via the control channel and the shared channel corresponding to the feedback channel.

2 . The terminal as claimed in claim 1 , wherein the transmitter transmits the feedback channel to the another terminal in a case where LBT is successful in all of the plurality of bands.

3 . A communication method performed by a terminal, the communication method comprising:

receiving, from another terminal, a control channel and a shared channel in a resource pool in a frequency band in which Listen Before Talk (LBT) is performed in channel access;

performing LBT in each of a plurality of bands before transmitting a feedback channel corresponding to the shared channel; and

transmitting the feedback channel in a band in which LBT is successful among the plurality of bands,

wherein the terminal performs LBT, prior to transmission of the feedback channel, during a time period determined based on an indication related to LBT that is indicated via the control channel and the shared channel corresponding to the feedback channel.