Ntt Docomo, Inc.

Shohei Yoshioka

Satoshi Nagata

Kazuki Takeda

Lihui Wang

Xiaolin Hou

Yuki Matsumura

Huan Wang

Hiroki Harada

Yanru Wang

Shaozhen Guo

Yukihiko Okumura

Satoshi Suyama

Tatsuki Okuyama

Jun Mashino

Daisuke Murayama

Shinya Kumagai

Yuki Takahashi

Daisuke Kurita

Jing Wang

Tomoya Ohara

Daiki Takeda

Hideyuki Moroga

Nadisanka Rupasinghe

Naoya Shibaike

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.

Terminal and communication method

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 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 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.

Terminal and base station for indicating a resource set to be triggered to enhance system frequency utilization

A terminal includes: a control unit configured to connect to another terminal in an RRC (Radio Resource Control) layer; and a transmitting unit configured to transmit data to the another terminal. In a case where the another terminal or the terminal itself performs at least one of transmission, reception, and sensing during a specific timing, the control unit controls an operation related to the connection in the RRC layer, based on the specific timing.

Terminal and communication method to implement unicast communication suitable for power saving operation in terminal-to-terminal direct communication

A terminal according to an aspect of the present disclosure includes a control section that assumes a certain restriction being applied to a communication supporting a subcarrier spacing wider than a certain subcarrier spacing, and a transmitting/receiving section that performs transmission/reception processing of the communication based on the certain restriction. According to an aspect of the present disclosure, it is possible to suitably suppress adverse influence of a time taken for communication switching even when a relatively wide subcarrier spacing is used.

Terminal and radio communication method

A terminal includes a receiver that receives configuration information transmitted from a base station in a high frequency band higher than or equal to a frequency band of a Frequency Range 2 (FR2) in a frequency range a New Radio (NR) system formed of a Frequency Range 1 (FR1), which is a low frequency range, and the FR2, which is a high frequency range; and a controller that modifies, based on the configuration information, an interpretation of at least one of a counter DAI and a total DAI in a Downlink Assignment Indicator (DAI) included in control information to be received from the base station.

Terminal for configuring slot offset of uplink or downlink channel

A terminal includes a control unit configured to perform resource selection by which a channel receiving a response related to retransmission control is secured, in a case where the terminal selects a resource to be used autonomously from resource candidates, a transmission unit configured to transmit data to another terminal using the resource candidates, and a reception unit configured to receive the response related to retransmission control corresponding to the data from the another terminal.

Terminal, communication method, and wireless communication system for sidelink transmission

When using a different frequency band such as FR4, which is different from a frequency band including FR1 and FR2, the terminal uses a phase tracking reference signal (PTRS) having a different density in at least one of a time direction and a frequency direction to perform transmission or reception of a signal using the PTRS.

Terminal

A terminal includes a receiving unit that performs reception on at least one of a plurality of sidelink control channels or a plurality of sidelink shared channels; a control unit that selects, upon detecting that a number of a plurality of sidelink feedback channels to be simultaneously transmitted exceeds an upper limit number, the upper limit number of sidelink feedback channels from among the plurality of sidelink feedback channels to be simultaneously transmitted, wherein each of the feedback channels is associated with at least one of a control channel of the plurality of sidelink control channels or a shared channel of the plurality of sidelink shared channel; and a transmitting unit that performs simultaneous transmissions on the selected upper limit number of sidelink feedback channels.

A terminal includes a control unit that sets, when data transmitted on a sidelink shared channel is frequency division multiplexed with a sidelink reference signal in a symbol to which the sidelink shared channel is mapped, a first value of α transmit power for transmitting the reference signal to a same value as or a different value from a second value of α transmit power for transmitting the data; and a transmitting unit that transmits the reference signal and the data, wherein the transmitting unit applies the first value of the transmit power to the reference signal and applies the second value of the transmit power to the data.

Growing community of inventors

Tokyo, Japan

Shohei Yoshioka