Ntt Docomo, Inc.

Takuma Takada

Naoki Fujimura

Hiroki Harada

Yuichi Kakishima

Daiki Takeda

Hideaki Takahashi

Kazuaki Takeda

Xiaolin Hou

Tooru Uchino

Lihui Wang

Yousuke Sano

Hiromasa Umeda

Takayuki Isogawa

Yuta Oguma

A terminal is disclosed including a transmission unit that transmits a Sounding Reference Signal (SRS) and a control unit that switches a carrier so as to transmit the SRS. The control unit determines a period during which no signal transmission is performed in radio frames used in a serving cell, based on a subcarrier spacing of a cell corresponding to a switching destination carrier.

Terminal

A UE receives a radio signal via a receive beam. The UE controls the receive beam in a first state or in a second state where control of the receive beam is different from that of the first state. The UE directs at least one receive beam to a serving cell and directs another receive beam to a direction different from the serving cell in a case of controlling the receive beam in the second state and executing configuration regarding a secondary cell.

Terminal for multibeam control

A terminal includes a receiving unit that receives information indicating whether each condition of one or more conditions for validating a time alignment is activated or deactivated; and a control unit that independently activates or deactivates each condition of the one or more conditions in accordance with the received information.

Terminal, base station, and communication method

A user equipment includes a transmitting unit that transmits a measurement result of a secondary cell; a receiving unit that receives a signal to activate the secondary cell; and a control unit that uses previously obtained information of the secondary cell to activate the secondary cell when a predetermined condition associated with a power class of the user equipment is satisfied.

User equipment and communication method

A terminal includes a receiving unit that receives a block and a reference signal that is for measuring a channel state, wherein the block includes a synchronization signal and system information; and a control unit that measures L1-SINR (Layer1 Signal to interference plus noise power ratio) based on the block including the synchronization signal and the system information, the reference signal for measuring the channel state, and measurement using a resource for measuring interference, wherein the control unit determines a period of measurement of the L1-SINR based on a configuration of the resource for measuring the interference.

Terminal and measurement method

A terminal includes a controller configured to determine a candidate resource location where a resynchronization signal of a neighbor cell is possibly transmitted based on information on the neighbor cell; and a receiver configured to receive the resynchronization signal of the neighbor cell based on the candidate resource location.

A terminal includes a receiver that receives an instruction signal indicating to modify a configuration of a radio link monitoring; and a controller that modifies a parameter used for the configuration of the radio link monitoring in accordance with the instruction signal received by the receiver.

Terminal and communication method for radio link monitoring

A user equipment executes carrier aggregation using a plurality of component carriers allocated in a predetermined band in a predetermined frequency range (FR2). In a case where only a plurality of secondary component carriers is allocated in the predetermined band, the user equipment selects a secondary component carrier that is a reception quality measurement target among the plurality of secondary component carriers. In addition, the user equipment transmits a reception quality measurement result.

User equipment

A terminal includes a reception unit configured to receive, from a base station, information for requesting a terminal capability report related to a wake-up signal associated with a paging occasion and configuration information related to at least one of a first wake-up signal and a second wake-up signal, a transmission unit configured to transmit the terminal capability report related to the wake-up signal to the base station, and a control unit configured to determine a configuration of the first wake-up signal and a configuration of the second wake-up signal based on the configuration information related to the wake-up signal, and the reception unit receives the wake-up signal and paging associated with the wake-up signal from the base station, and the control unit determines the configuration of the first wake-up signal from a value based on the configuration of the second wake-up signal.

A terminal includes a receiving unit that receives a reference signal for acquiring a channel state and a control unit that performs measurement related to RSRP (Reference signal received power), based on a result of receiving the reference signal, and subcarrier spacing to be applied to the reference signal.

Provided is a user equipment including: a receiving unit that receives at least one of configuration information of inter-radio access technology (RAT) measurement in a frequency range (FR) 2, configuration information of inter-RAT measurement other than the FR2, and configuration information of a measurement gap for each user equipment from a base station apparatus; and a control unit that performs the inter-RAT measurement other than the FR2 within the measurement gap for each user equipment and performs the inter-RAT measurement in the FR2 outside the measurement gap for each user equipment.

User equipment and measurement method

A user equipment includes a reception unit that performs a measurement for determining an optimum beam from among a plurality of reception beams that is usable in the user equipment; and a control unit that selects, based on information of a past measurement by the reception unit, a reception beam to be used in the user equipment, upon receiving, by the reception unit, a signal including information indicating to update a configuration.

Terminal communication method and system for TCI STSTEM switching

A terminal determines an interrupt time applied to a transition from a transition source cell to a transition destination cell. Specifically, the terminal changes a value of the interrupt time based on a combination of subcarrier spacings set in the transition source cell and the transition destination cell.

Terminal with interrupt time during handover

A user equipment includes a receiving unit that receives a reference signal from a secondary cell; a transmitting unit that transmits a result of a measurement of the reference signal; and a control unit that selects, when the secondary cell is deactivated after the transmitting unit transmits the result of the measurement and the secondary cell is reactivated, and when a time interval from a timing at which the transmitting unit transmits the result of the measurement until a timing at which the secondary cell is reactivated is within a predetermined time interval, a receiving beam that is applied to the secondary cell upon transmitting the result of the measurement by the transmitting unit, as a receiving beam to be applied to the reactivated secondary cell.

A terminal is disclosed including a receiver that receives an instruction for a quality measurement of a cell in Dual Connectivity (DC), the cell being in an unconnected state; and a processor that performs the quality measurement in accordance with the instruction, wherein the processor performs the quality measurement in a measurement period based on a discontinuous reception configuration in a Secondary Cell Group (SCG). In other aspects, a measurement method for a terminal is also disclosed.

Growing community of inventors

Tokyo, Japan

Takuma Takada