Ntt Docomo, Inc.

Shohei Yoshioka

Satoshi Nagata

Lihui Wang

Kazuki Takeda

Xiaolin Hou

Huan Wang

Yuki Matsumura

Hiroki Harada

Yanru Wang

Yukihiko Okumura

Satoshi Suyama

Tatsuki Okuyama

Jun Mashino

Daisuke Murayama

Shinya Kumagai

Yuki Takahashi

Daisuke Kurita

Jing Wang

Chongning Na

Naoya Shibaike

Tomoya Ohara

Min Liu

Shaozhen Guo

Daiki Takeda

Hideyuki Moroga

Yuichi Kakishima

Nadisanka Rupasinghe

A terminal includes a reception unit that receives a response associated with retransmission control from another terminal via a first channel, a transmission unit that transmits the response associated with retransmission control to a base station via a second channel, and a control unit that determines a timing of transmitting the second channel based on a predetermined time configured between the first channel and the second channel.

Terminal and communication method

A disclosed terminal includes a transmitter configured to transmit information relating to resource selection to another terminal via a resource relating to a HARQ (Hybrid automatic repeat request) feedback channel; and a receiver configured to receive data from the another terminal via a resource determined based on the information relating to the resource selection, wherein the information relating to the resource selection includes at least one of a sensing result, information indicating a resource determined based on sensing, an indication of re-evaluation or re-selection, or a sidelink grant.

Terminal and radio communication method to improve the efficiency of communication by coordinating operations between the terminals

A user equipment including: a reception unit that receives configuration information for one or more grants from a base station apparatus; and a transmission unit that, wherein the one or more grants are active, transmits a sidelink signal using a resource specified by the one or more grants.

User equipment

A terminal includes a receiver configured to receive a response related to retransmission control from another terminal, via a first channel used for transmitting and receiving the response related to retransmission control; a controller configured to receive, from a base station, information representing a first offset in time domain from the first channel to a second channel, the second channel being used for transmitting the received response related to retransmission control to the base station; and a transmitter configured to transmit the received response related to retransmission control to the base station, via the second channel, wherein the controller determines a position of the second channel in time domain based on: the first offset; and a second offset that is applied to a position of the first channel in time domain, and that is used to determine a starting point of the first offset.

A terminal includes a controller configured to identify a resource that is included in a time domain in which a first channel used for transmitting a response related to retransmission control is allocated, and that is included in a frequency domain that is not used for transmitting the first channel; and a transmitter configured to transmit a second channel or a signal by using the resource.

A terminal according to an aspect of the present disclosure includes: a receiving section that receives information on one or more cells that transmit a downlink control channel for scheduling a physical shared channel of a primary cell; and a control section that determines, based on a cell that transmits the downlink control channel, at least one of a cell that monitors the downlink control channel and a search space type.

Terminal and radio communication method

A terminal includes a reception unit that monitors an activation signal at a monitoring occasion periodically configured during DRX (Discontinuous Reception), and a control unit that determines, based on a monitoring result of the activation signal, whether or not to monitor a control signal transmitted from another terminal during DRX on-duration starting after passage of an offset period from a time point of the activation signal.

A terminal including a receiving unit configured to perform sensing of resource reservation information and resource allocation information transmitted from another terminal by using a sensing window; a control unit configured to determine an available resource set, by identifying a predetermined resource in a resource selection window, based on the resource reservation information and the resource allocation information; and a transmitting unit configured to execute transmission to the another terminal by using a resource selected from the resource set.

A terminal includes a receiving unit configured to receive control information from at least one of another terminal and a base station, and to receive data from the another terminal; a transmitting unit configured to transmit, to the base station, a response relating to a retransmission process corresponding to the data; and a control unit configured to determine the response, based on at least one of the control information received from the another terminal and the control information received from the base station.

A terminal includes a communication unit configured to transmit and receive a multi-carrier signal in a frequency band equal to or higher than a predetermined frequency, and a control unit configured to determine a first frame structure of the multi-carrier signal, wherein in the first frame structure, at least one of a subcarrier spacing and a number of resource blocks in a maximum channel bandwidth, a CP (cyclic prefix) ratio, and a time unit or a frequency unit of scheduling is different from a second frame structure of the multi-carrier signal in a frequency band equal to or lower than the predetermined frequency.

A terminal comprises a transmission unit configured to transmit a CSI (Channel State Information) request and a reference signal for use in CSI measurement to another terminal, a reception unit configured to receive a CSI report that is based on a measurement result of the reference signal from the another terminal, and a control unit configured to determine, according to a communication state, control related to a HARQ (Hybrid automatic repeat request) response corresponding to the CSI report.

Terminal, system, and communication method for determining control of retransmission

A terminal, as disclosed, includes: a receiver that receives a downlink control information (DCI) using a specific type of radio network temporary identifier (RNTI); and a processor that controls reception of a physical downlink shared channel (PDSCH) scheduled by the DCI, based on a configuration associated with the specific type. In other aspects, a radio communication method, a base station, and a system are also disclosed.

Terminal, radio communication method, base station, and system

A user equipment including: a transmission unit configured to transmit sidelink data based on control information for sidelink scheduling received from a communication apparatus; and a reception unit configured to receive HARQ-ACK information for the sidelink data from a user equipment that receives the sidelink data, wherein the transmission unit transmits the HARQ-ACK information for the sidelink data to the communication apparatus.

User equipment and communication apparatus

A terminal includes a control unit configured to determine to, in a case where there are a resource for sidelink HARQ-ACK information (SL-HARQ-ACK information) and a resource for one or more information items other than SL-HARQ-ACK, in a slot, transmit one of the SL-HARQ-ACK information and the one or more information items other than the SL-HARQ-ACK information, according to priority order; and a transmission unit configured to transmit the determined information to a base station by using an uplink control channel in the slot.

Terminal, communication method and communication system

A terminal includes a receiving unit that receives control information transmitted on a second cell, the control information including information used to assign a resource for a downlink shared channel reception or a resource for an uplink shared channel transmission in a first cell; and a control unit that determines at least one of a measurement of a channel state information reference signal (CSI-RS), a measurement of a tracking reference signal (TRS), a transmission of a sounding reference signal (SRS), or a transmission of a physical random access channel (PRACH) is triggered, regardless of a content of information other than the information used to assign the resource included in the control information.

Growing community of inventors

Tokyo, Japan

Shohei Yoshioka