Sharp Kabushiki Kaisha Corporation

Fg Innovation Company Limited

Canon Kabushiki Kaisha

Tokyo Institute of Technology

Ryota Yamada

Hiromichi Tomeba

Katsuya Kato

Takashi Yoshimoto

Kazuyuki Shimezawa

Kozue Yokomakura

Yasuhiro Hamaguchi

Osamu Nakamura

Jungo Goto

Toshizo Nogami

Kimihiko Imamura

Hideo Namba

Atsushi Shirakawa

Tomoki Yoshimura

Kazuhiko Fukawa

Kazunari Yokomakura

Naoki Okamoto

Hiroshi Suzuki

Satoshi Suyama

Akira Shiba

Isamu Yoneda

Naoki Kusashima

Hideo Nanba

Shinpei To

Hiroki Takahashi

Seiji Sato

Shinya Miura

Shinpei Toh

Provided are a terminal apparatus and a communication method capable of improving reliability and frequency efficiency in a case that transmission is performed by beamforming. A receiver configured to receive a DMRS, DCI, and a PDSCH, and a decoding unit configured to decode the PDSCH are included, wherein the DCI includes a transmission configuration indicator (TCI) and the number of DMRS antenna ports, the TCI is information indicating a spatial reception filter for receiving the DMRS, the PDSCH includes a transport block, and in a case that two of the TCIs are indicated and the number of DMRS antenna ports is less than or equal to a prescribed number, and that the DCI includes a configuration of one transport block, the PDSCH transmitted from a part of the DMRS antenna ports is received based on a first TCI, and the PDSCH transmitted from a rest of the DMRS antenna ports is received based on a second TCI to decode the one transport block.

Terminal apparatus and communication method

The present disclosure includes a control unit that performs an uplink (UL) data transmission setting according to a radio resource control (RRC) message and a transmitting unit that transmits UL data according to the UL data transmission setting. The RRC message includes setting information of a plurality of configured UL grants (CGs). The setting information includes at least first and second CGs for each of at least one bandwidth part (BWP). The setting information further includes setting information related to transmission intervals for the first and second CGs. The control unit sets at least the first and second CGs for each BWP according to the setting information. The transmitting unit, when at least a part of the transmission interval of the first and second CGs overlap each other, interrupts UL data transmission of the first CG to perform UL data transmission of the second CG.

Terminal device

A terminal device and a communication method are provided. The terminal device includes a receiver for receiving sounding reference signal (SRS) setting information and setting information for signals having a spatial correlation set to a SRS, and a transmitter for transmitting the SRS. The SRS setting information includes information indicating the spatial correlation to the SRS. The receiver, when receiving the signals having the spatial correlation set to the SRS, sets a first spatial domain reception filter and a second spatial domain reception filter. The transmitter, when transmitting the SRS, sets a first spatial domain transmission filter and a second spatial domain transmission filter. The first spatial domain reception filter and the first spatial domain transmission filter are set with beam correspondence. The second spatial domain reception filter and the second spatial domain transmission filter are set with beam correspondence.

Terminal device, and communication method for sounding reference signal transmission using spatial domain filter settings

To provide a base station apparatus, a terminal apparatus, and a communication method capable of improving a frequency efficiency or throughput by suppressing an overhead associated with feedback from the terminal apparatus in a case that the base station apparatus acquires highly accurate CSI. A terminal apparatus according to an aspect of the present invention includes a receiver configured to receive at least one NZP CSI-RS, and a transmitter configured to transmit a signal including at least one piece of CSI. The at least one piece of CSI includes at least an RI and a PMI, the receiver acquires a first value for configuring the number of vectors indicated by the PMI, and in a case that a value of the RI exceeds a prescribed value, the number of vectors is configured by a second value being a value equal to or less than the first value.

Base station apparatus, terminal apparatus, and communication method

To provide a terminal apparatus and a communication method capable of improving reliability and frequency efficiency in a case of transmission by beamforming. Provided are a higher layer processing unit configured with demodulation reference signal (DMRS) antenna port groups for indicating two groups of antenna ports of a DMRS, a receiver configured to receive the DMRS, downlink control information (DCI), and a downlink shared channel (PDSCH), and a decoding unit configured to decode the PDSCH, wherein the PDSCH includes a transport block, and in a case that the number of the transport blocks configured in the DCI is one, the PDSCH demodulated using a DMRS of a first group and/or the PDSCH demodulated using a DMRS of a second group is used to decode one transport block.

A base station apparatus includes a downlink reference signal generation unit configured to generate a first demodulation reference signal and a second demodulation reference signal that are reference signals used to demodulate a data signal, and a radio transmitting unit configured to transmit the first demodulation reference signal, the second demodulation reference signal, and control information to the terminal apparatus. The control information includes parameters regarding the first demodulation reference signal and parameters regarding the second demodulation reference signal. The parameters regarding the first demodulation reference signal include an antenna port number. The parameters regarding the second demodulation reference signal include an antenna port number, and a time domain density or a frequency domain density with which demodulation reference signals are mapped into a slot. The first demodulation reference signal is mapped before the second demodulation reference signal in the slot.

Provided are communication apparatus and a communication method that allow for secure communication even in a case that an eavesdropper has multiple antennas. An apparatus includes a transmitter configured to transmit a constant amplitude signal from three or more transmit antennas; a controller configured to control a phase of the constant amplitude signal, based on channel information and a target symbol; and a modulation unit configured to generate a modulation symbol from bits. The target symbol is generated by multiplying the modulation symbol by an amplitude coefficient.

Communication apparatus and communication method

Provided are a terminal apparatus, a base station apparatus, and a communication method capable of improving reliability or frequency efficiency in a case of transmission by beamforming. An apparatus includes: a receiver configured to receive a downlink shared channel including configuration information, downlink control information, and a transport block; and a signal detection unit configured to decode the downlink shared channel by using a redundancy version included in the downlink control information. The configuration information includes the number of continuous slots in which an identical transport block is transmitted repeatedly, demodulation reference signals (DMRSs) transmitted in at least two of the continuous slots are not in a relationship of Quasi-colocation (QCL), and the redundancy version is determined from slot indexes of the continuous slots and information for indicating the QCL.

Terminal apparatus, base station apparatus, and communication method

A base station apparatus provided with a function of performing communication using multiple beams implements appropriate beamforming while reducing interference power, thereby communication quality becomes stable and frequency efficiency or throughput is improved. The base station apparatus according to the present invention is a base station apparatus for communicating with a terminal apparatus, the base station apparatus including: a transmitter configured to transmit a synchronization signal block including a synchronization signal in a prescribed transmission window; and a controller configured to configure a size of the prescribed transmission window in which the synchronization signal block is transmitted, in which the transmitter notifies the terminal apparatus of information associated with QCL between two of the synchronization signal blocks transmitted in the prescribed transmission window.

Transmission and reception of synchronization signal blocks in a wireless network

In a state where a liquid container is mounted in a liquid ejection device, the position of a handle is maintained at a predetermined position. A device main body that ejections a liquid and a liquid container that contains liquid are provided, the liquid container is attachable to and detachable from the device main body in a direction orthogonal to a width direction, the device main body has a first fitting portion, the liquid container has a handle that rotates around an axis that extends in the width direction, and the handle has a second fitting portion that fits to the first fitting portion.

Liquid ejection device and liquid container

The present invention provides a base station apparatus, a terminal apparatus, and a communication method, which are capable of throughput improvement. A base station apparatus that communicates with a terminal apparatus, includes a higher layer processing unit that configures a CSI process that is a configuration relating to reporting of a channel state information (CSI), for the terminal apparatus for which a prescribed transmission mode is configured, in which the CSI process includes a configuration of a CSI reference signal and a configuration relating to two different code books. A terminal apparatus that communicates with a base station apparatus, includes a higher layer processing unit for which a CSI process that is a configuration relating to reporting of channel state information (CSI) is configured by the base station apparatus, and a transmission unit that transmits the CSI based on the CSI process, in which the CSI information includes a configuration of a CSI reference signal and a configuration relating to two different code books.

Provided are a base station apparatus, a terminal apparatus, and a communication method that achieve a radio access network capable of being flexibly compatible with various requirements. The base station apparatus according to an aspect of the present invention is a base station apparatus for communicating with the terminal apparatus, the base station apparatus includes a transmission unit configured to generate a transmit signal based on a frame format in which a radio parameter is configurable, and the radio parameter configured in the frame format is configured based on a radio medium through which the transmission unit transmits the transmit signal.

A terminal apparatus and a communication method are provided. The terminal apparatus communicates with a base station apparatus. The terminal apparatus includes a receiver and a measurement unit. The receiver is configured to receive downlink signals and configuration information in a first component carrier and a second component carrier. The measurement unit is configured to calculate Channel State Information (CSI) of the first component carrier and the second component carrier. In a case that spatial Quasi-coloration (QCL) for reception parameters is configured between the first component carrier and the second component carrier in the configuration information, the CSI of the first component carrier and the CSI of the second component carrier are calculated with a same reception parameter.

Repeated transmission in a slot is efficiently performed with less control information. In a case that a parameter related to frequency hopping is configured to intra-slot hopping, a slot is divided into a first section and a second section and at least one demodulation reference signal is mapped to each of the first section and the second section. In a case that a parameter related to PUSCH repetition in a slot is enabled, a first section and a second section are generated according to a criterion identical to a criterion used in a case that information related to the frequency hopping is enabled, at least one demodulation reference signal is mapped to the first section and the second section, two PUSCHs generated from a same transport block are generated, and the two generated PUSCHs are mapped to the first section and the second section.

Terminal apparatus

A terminal apparatus, a location server, and methods for performing positioning measurement are provided. A terminal apparatus includes: a receiver configured to receive a PRS configuration from a location server; receive a first PRS resource from a serving cell and a second PRS resource from a neighboring cell based on the PRS resource configuration; and a position measuring unit configured to determine a RSTD based the reception timing(s) of the first PRS resource and/or second PRS resource; wherein the first PRS resource and the second PRS resource are configured with a first subcarrier spacing and a second subcarrier spacing respectively; the first PRS resource and the second PRS resource are configured with their corresponding QCL information for determining their corresponding spatial receiving filter for receiving the first PRS resource and the second PRS resource by the terminal apparatus respectively; the first QCL information is different from the second QCL information.

Growing community of inventors

Sakai, Japan

Ryota Yamada