Ntt Docomo, Inc.

Yuichi Kakishima

Satoshi Nagata

Kazuki Takeda

Jing Wang

Kazuaki Takeda

Yuki Matsumura

Hiroki Harada

Xin Wang

Xiaolin Hou

Huiling Jiang

Shohei Yoshioka

Chongning Na

Tomoya Ohara

Min Liu

Keisuke Saito

Ryosuke Osawa

Hideyuki Moroga

Even when multiple beams or transmission reception points are used, mobility is prevented from lowering. A user terminal according to one aspect of the present invention includes: a reception section that receives a plurality of measurement signals employing respectively different measurement resource configurations; a control section that controls measurement out of a measurement signal of the plurality of measurement signals corresponding to resource configuration information included in downlink L1/L2 signaling or selected based on a predetermined condition; and a transmission section that reports a measurement result.

User terminal and radio communication method

A terminal according to an aspect of the present disclosure includes a receiving section that receives a pathloss reference signal, and a control section that calculates a pathloss for transmission power control on the basis of layer 1 (L1)-reference signal received power (RSRP) for the pathloss reference signal when the pathloss reference signal is updated by a media access control-control element (MAC CE), and a measurement condition is met. According to an aspect of the present disclosure, the pathloss can be appropriately calculated.

Terminal and a radio communication method in next-generation mobile communication systems

The present invention is designed to enable quick beam recovery. A user terminal according to the present invention has a receiving section that receives a downlink (DL) signal, and a control section that controls a beam that is used to transmit and/or receive the DL signal, and the control section controls transmission of an uplink (UL) signal that requests switching of the beam, based on the received power and/or the received quality of a plurality of mobility measurement signals that are respectively associated with a plurality of beams.

A terminal is disclosed that includes a receiver that receives, via higher layer signaling, configuration information indicating a first resource for interference measurement, a second resource of non-zero power (NZP) channel state information reference signal (CSI-RS) for interference measurement, and a third resource of NZP CSI-RS for channel measurement. The terminal also includes a processor that performs interference measurement by using the first resource or the second resource, and performs channel measurement by using the third resource. The configuration information indicates a plurality of combinations of a third resource candidate and at least one of a first resource candidate and a second resource candidate. The processor uses, for measurement, a combination indicated by downlink control information among the plurality of combinations. 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 terminal according to one aspect of the present disclosure includes: a receiving section that receives information related to a channel state information reference signal (CSI-RS) of a terminal according to an old release; and a control section that performs control of applying rate match or puncture to a specific channel or signal regarding a resource of the CSI-RS of the terminal according to the old release. According to one aspect of the present disclosure, even when there are terminals according to different releases, each of the terminals can appropriately perform communication.

Terminal and radio communication method

A terminal according to one aspect of the present disclosure includes: a control section that assumes that a frequency domain orthogonal cover code (FD-OCC) having a sequence length of a number larger than two is applied to a demodulation reference signal mapped to a pair of resource elements the number of which is greater than two and that are being different in frequency; and a transmitting/receiving section that performs transmission processing or reception processing of the demodulation reference signal, based on the FD-OCC. According to one aspect of the present disclosure, even when there are terminals according to different releases, each of the terminals can appropriately perform communication.

A terminal is disclosed including a transmitter that transmits a beam recovery request signal and a processor that controls the transmission of the beam recovery request signal. The transmission of the beam recovery request signal is controlled by the processor based on a received power that is measured using a channel state information reference signal (CSI-RS) resource or a synchronization signal (SS) block that is quasi co-located (QCL) with a demodulation reference signal of a downlink control channel. In other aspects, a radio communication method is also disclosed.

A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits an uplink shared channel by applying a precoder; and a control section that specifies a number of ports used to determine the precoder when a Sounding Reference Signal (SRS) resource is not configured. According to one aspect of the present disclosure, even when an SRS resource is not configured, it is possible to appropriately determine a precoder of a UL signal.

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Palo Alto, CA, United States of America

Yuichi Kakishima