Ntt Docomo, Inc.

Yuki Matsumura

Satoshi Nagata

Kazuki Takeda

Xiaolin Hou

Jing Wang

Shaozhen Guo

Lihui Wang

Shohei Yoshioka

Yuichi Kakishima

Hideaki Takahashi

Hiroki Harada

Weiqi Sun

Kazuaki Takeda

Xin Wang

Nadisanka Rupasinghe

Lan Chen

Hideyuki Moroga

Masaya Okamura

Wenjia Liu

Tooru Uchino

Min Liu

Ryosuke Osawa

Daisuke Murayama

Huiling Li

Runxin Wang

Haralabos Papadopoulos

Tomoya Ohara

Huan Wang

Yousuke Sano

Takayuki Furuta

Yuta Oguma

Lu Jiang

Syouichi Higuchi

A terminal according to an aspect of the present disclosure includes: a control section that determines a plurality of physical uplink control channel (PUCCH) resources on the basis of downlink control information; and a transmitting section that performs PUCCH repeated transmission by using the plurality of PUCCH resources. According to an aspect of the present disclosure, suitable PUCCH repeated transmission can be implemented.

Terminal, radio communication method, and base station

A terminal according to one aspect of the present disclosure includes a control section that, when a trigger event related to a given panel occurs, triggers power headroom report (PHR) related to the given panel, and a transmitting section that transmits a Medium Access Control (MAC) control element related to the triggered PHR. The trigger event includes an event in which a periodic timer related to the given panel expires. According to one aspect of the present disclosure, PHR related to a panel can be appropriately triggered/transmitted.

A terminal according to one aspect of the present disclosure includes: a receiving section that receives downlink control information (DCI) including specific information different from a sounding reference signal resource indicator (SRI), and receives mapping between the specific information and a parameter related to uplink shared channel (PUSCH) transmission power control by using higher layer signaling; and a control section that determines a parameter used for the PUSCH transmission power control, based on the specific information and the mapping. According to one aspect of the present disclosure, parameters related to UL transmission power control can be appropriately determined.

A user equipment includes a receiver that receives information associated with a TCI state for a PDSCH from a base station apparatus, a controller that individually applies, based on the information associated with a TCI state, configurations associated with a QCL to respective PDSCHs transmitted from a first TRP or panel, or a second TRP or panel, and a communication unit that performs communication via the PDSCHs to which the configurations associated with the QCL are applied. The information associated with the TCI state includes an RRC signaling, a MAC signaling and DCI, the PRO signaling includes multiple TCI states, the MAC signaling activates a number of TCI states applied to the second TRP or panel from among the multiple TCI states, and the DCI has a field indicating, from among the number of activated TCI states, a TCI state for a PDSCH transmitted from the second TRP or panel.

User equipment, base station apparatus and communication method

A terminal is disclosed including a processor that measures for beam management: a Doppler spread or a coherence time associated with a beam and one or more reporting quantities. The terminal also includes a transceiver that reports the Doppler spread or the coherence time. In other aspects, a method for a terminal and a base station are also disclosed.

Doppler spread based beam measurement and reporting for high speed mobility

A terminal according to an aspect of the present disclosure includes a receiving section that performs reception in at least one of a zero power channel state information reference signal (ZP-CSI-RS) resource and a non zero power channel state information reference signal (NZP-CSI-RS) resource configured for a plurality of transmission/reception points, and a control section that controls interference measurement for at least one of a periodic channel state information (CSI) report, a semi-persistent CSI report, and an aperiodic CSI report based on the reception. According to an aspect of the present disclosure, measurement and reporting of CSI for a multi panel/TRP can be appropriately performed.

A method of channel state information (CSI) reporting is disclosed that includes determining, with a user equipment (UE), whether CSI to be reported includes a matrix based on network (NW) triggering and performing, with the UE, CSI reporting based on the determination. The CSI reporting may be periodic, semi-persistent, or aperiodic CSI reporting. The matrix may be W, W, or both. The NW triggering may be explicitly performed using one or more downlink control information (DCI) bits. The NW triggering may be implicitly performed based on a location of DCI detected by the UE. In other aspects, a user equipment is also disclosed.

Method of sounding reference signal (SRS)-assisted SD beam and FD vector reporting for type II channel state information (CSI)

A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information and a downlink shared channel scheduled by the downlink control information on a cell different from a cell for the downlink control information, and a control section that determines, on the basis of at least one of a TCI state (Transmission Configuration Indication state) list or spatial relation list configured for each cell and information notified by the downlink control information, a spatial relation or TCI state applied to an uplink channel corresponding to the downlink control information.

Terminal, radio communication method, base station, and system for configuring uplink or downlink channel based on codepoint of downlink control information field

In order to assume an appropriate base station beam (TCI state) during a period after an RRC reconfiguration procedure and before MAC CE activation in future radio communication systems, one aspect of a user terminal of the present disclosure includes: a receiving section that receives a PDCCH (Physical Downlink Control Channel) after transmission of an RRC (Radio Resource Control) reconfiguration complete message; and a control section, when the RRC reconfiguration involves a random access procedure, assumes that a synchronization signal block or a channel state information reference signal identified during the random access procedure and the PDCCH are quasi-co-located.

Terminal, communication method, base station, and system for random access procedure

A user terminal () includes a reception section that receives a first radio signal transmitted by a first transmission point using a first radio resource and a second radio signal transmitted by a second transmission point using a second radio resource, and a control section that controls reception processing of the first radio signal transmitted by the first transmission point using the first radio resource and the second radio signal transmitted by the second transmission point using the second radio resource on assumption that the first radio resource and the second radio resource are permitted to be configured to at least one of different times and different frequency bands.

User terminal and radio communication method

A terminal according to one aspect of the present disclosure has a control section that judges indexing of Physical Downlink Control Channel (PDCCH) monitoring occasions or Downlink Control Information (DCI) formats associated with joint feedback, when the terminal is not provided with any CORESET pool index or is provided with a CORESET pool index with a value of '0' for one or more first control resource sets (COntrol REsource SETs (CORESETs)) and is provided with a CORESET pool index with a value of “1” for one or more second CORESETs on an active Downlink Bandwidth Part (DL BWP) of a serving cell, and Acknowledgement (ACK)/Negative Acknowledgement (ACNACK) feedback mode=joint feedback is provided for the serving cell, and a transmitting section that transmits a HARQ-ACK using a Hybrid Automatic Repeat reQuest (HARQ)-ACK codebook or Physical Uplink Control Channel (PUCCH) resource determined based on the indexing. According to one aspect of the present disclosure, in the case of using multi-panel/TRP, it is possible to suitably perform HARQ-ACK feedback.

A terminal according to an aspect of the present disclosure includes: a receiving section that receives information indicating a plurality of transmission configuration indication (TCI) states for a same demodulation reference signal (DMRS) port for physical downlink shared channel (PDSCH); and a control section that determines, based on downlink control information, at least one of a TCI state and resource allocation of each of a plurality of PDSCHs that carry same downlink data. According to an aspect of the present disclosure, it is possible to appropriately receive downlink data from a plurality of transmission points.

A terminal according to one aspect of the present disclosure includes a transmitting section that transmits a random access preamble in a given cell when beam failure is detected, and a control section that assumes a same antenna port quasi-co-location parameter as that associated with an index of a reference signal corresponding to the random access preamble for monitoring of a downlink control channel in a given control resource set after a given period from timing at which contention resolution is successful in random access procedure corresponding to the random access preamble and until specific information related to a Transmission Configuration Indication state (TCI state) for a downlink control channel is received. According to one aspect of the present disclosure, it is possible to appropriately update a beam in relation to BFR.

A terminal according to an aspect of the present disclosure includes a receiving section that receives information indicating one or more pathloss reference signals, and a control section that counts the number of active durations of the one or more pathloss reference signals in a specific period, based on the information and performs, while not assuming that the number is greater than a specific value, pathloss estimation.

As for appropriate settings in the case of configuration in which search space other than search space for a beam failure recovery request response (BFRQR) signal is monitored in a beam recovery procedure of a future radio communication system, one aspect of a user terminal of the present disclosure includes: a control section that controls monitor setting related to first search space and second search space other than the first search space in accordance with a carrier for which the first search space for a beam failure recovery request response signal is set; and a receiving section that monitors at least one of the first search space and the second search space based on the setting.

Growing community of inventors

Tokyo, Japan

Yuki Matsumura