Sharp Kabushiki Kaisha Corporation

Sharo Kabushiki Kaisha

Kazuyuki Shimezawa

Toshizo Nogami

Kimihiko Imamura

Naoki Kusashima

Wataru Ouchi

Shoichi Suzuki

Daiichiro Nakashima

Alvaro Ruiz Delgado

Takashi Hayashi

Tatsushi Aiba

Ryota Yamada

Katsunari Uemura

Takashi Yoshimoto

Yasuyuki Kato

Yosuke Akimoto

Katsuya Kato

Shohei Yamada

Kazunari Yokomakura

Hiromichi Tomeba

Wahoh Oh

Hiroki Takahashi

Naoki Okamoto

Kozue Yokomakura

Lei Huang

Toshizoh Nogami

Daiichiroh Nakashima

Kusashima Naoki

Ouchi Wataru

Imamura Kimihiko

A terminal device (UE) includes a reception unit configured to monitor an enhanced physical downlink control channel (EPDCCH) on a Serving cell with frame structure type 3. In a case that the terminal device detects downlink control information (DCI) in a subframe, the terminal device assumes a configuration of OFDM symbols according to a field in the DCI in the subframe. The OFDM symbols are used for downlink transmission. A demodulation reference signal (DMRS) associated with the EPDCCH is mapped in the subframe according to the configuration of the OFDM symbols.

Terminal device, base station device, and communication method

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.

Base station apparatus, terminal apparatus, and communication method

A terminal apparatus is a terminal apparatus that communicates with a base station apparatus and includes a reception unit that receives NAICS assistance information from the base station apparatus. The NAICS assistance information includes assistance information used by the terminal apparatus in order to cancel or suppress interference of an neighbor cell and includes information related to power of a downlink shared channel used by the base station apparatus. The assistance information includes information related to a physical cell ID, information related to the number of antenna ports for a cell-specific reference signal, information related to an MBSFN subframe, a transmission mode, information related to a power ratio of the downlink shared channel between OFDM symbols, and information related to a power ratio of the cell-specific reference signal and the downlink shared channel.

Base station apparatus, terminal apparatus, and method

A cell using an allocated frequency band, a non-allocated frequency band, or a shared frequency band is controlled efficiently. A higher layer processing unit configured to configure a first configuration for monitoring an Enhanced Physical Downlink Control CHannel (EPDCCH) and a second configuration for measuring a Discovery Signal (DS); a reception processing unit configured to monitor a candidate of the EPDCCH, based on the first configuration; and a detection unit configured to detect the DS in a prescribed subframe to be determined, based on the second configuration are provided. In a case that simultaneous transmissions on the EPDCCH and the DS occur in a Licensed Assisted Access (LAA) cell, the EPDCCH is mapped onto a resource element different from a resource element corresponding to the DS in the prescribed subframe.

A transmission device that generates control information including 3-bit information and transmits a physical downlink shared channel, a reference signal for demodulation of the physical downlink shared channel, and the control information, wherein, in a case that all codewords which are mapped to the physical downlink shared channel are enabled, among a first value to an eighth value indicated by the 3-bit information, the third value to the eighth value indicate that the number of layers is from 3 to 8 respectively, and the first value and the second value indicate that the number of layers is equal to 2, and the first value indicates that the scrambling identity for the reference signal is equal to 0 and the second value indicates that the scrambling identity is equal to 1.

Transmission device, reception device, communication system, and communication method

Provided is a transmission unit that, if transmission of a PUCCH of a first CG overlaps transmission of a PUSCH and/or a PUCCH of a second CG in a certain subframe and UCI including HARQ-ACK is transmitted on the PUCCH of the first CG, upon transmit power of the PUCCH of the first CG exceeding a first upper limit value, performs scaling on the transmit power of the PUCCH of the first CG such that the transmit power of the PUCCH does not exceed the first upper limit value, and upon the transmit power of the PUCCH of the first CG not exceeding the first upper limit value, sets the transmit power of the PUCCH of the first CG to power required for the PUCCH of the first CG.

Terminal device, base station device, and method

A terminal communicating with a base station by using an FDD cell and a TDD cell includes a reception unit that performs reception over a PDCCH transmitted using a DCI format. In a case where the TDD cell is configured as a primary cell for the terminal, a first uplink reference UL-DL configuration used for determining an interval between reception of the PDCCH indicating transmission of a PUSCH and the transmission of the PUSCH is configured for the TDD cell, and a second uplink reference UL-DL configuration used for determining whether or not to use DAI included in the DCI format of the PDCCH indicating the transmission of the PUSCH is configured for the FDD cell.

Terminal, base station, and communication method

A terminal device transmits an RI determined by the terminal device, the RI corresponding to PDSCH transmission and corresponding to the number of layers, transmits capability information including first information, second information, third information, and/or fourth information, and receives fifth information, wherein the first information indicates a UE category corresponding to a first maximum number of the layers, the second information indicates a first bandwidth class, the third information indicates a second maximum number of the layers, the fourth information indicates a third maximum number of the layers, the fifth information indicates a fourth maximum number of the layers, and a fifth maximum number of the layers assumed for determining a bit width for the RI is given by referring to any one of the first maximum number of the layers, the second maximum number of the layers, and the fourth maximum number of the layers.

Terminal device, base station device, communication method, and integrated circuit

Provided is a terminal communicating with a base station, in which in a case where a physical downlink control channel is monitored in a first physical downlink control channel-physical resource block set, the physical downlink control channel is decoded in such a manner that the physical downlink control channel is rate-matched based on a prescribed reference signal, and in which, in a case where the physical downlink control channel is monitored in a second physical downlink control channel-physical resource block set, the physical downlink control channel is decoded in such a manner that the physical downlink control channel is rate-matched based on a reference signal that is set individually for each terminal.

Terminal, base station, communication system, and communication method

The present invention enables efficient transmission/reception of a signal including control information between a base station apparatus and a mobile station apparatus. To realize this, there are provided a receiver configured to receive an enhanced physical downlink control channel from the base station apparatus; a setting unit configured to be able to set, using at least a format of downlink control information included in the received enhanced physical downlink control channel, one of a plurality of possible sets of M, M being the number of first elements that constitute the enhanced physical downlink control channel; and a monitoring unit configured to monitor a search region in which the enhanced physical downlink control channel obtained on the basis of the set possible set of M is possibly mapped.

Terminal apparatus, base station apparatus and communication method

There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unitconfigured to configure, at the base station, for each terminal, a first reference signal configuration for configuring a measurement target for channel state reporting, configured to configure, at the base station, for each terminal, a second reference signal configuration specifying a resource element to be excluded from the target of data demodulation in a case where the terminal demodulates data, and configured to configure, at the base station, for each terminal, a third reference signal configuration for configuring a measurement target for which a reference signal received power is to be measured by the terminal.

Communication system, terminal, and base station

A search space of a control channel which is monitored by a terminal is determined based on a first uplink-downlink configuration specific to a base station, a second uplink-downlink configuration specific to a terminal, and one or more EPDCCH subframe configuration, for each subframe. A scrambling sequence parameter which corresponds to the search space of the control channel and is used in scrambling of the control channel is switched. The terminal switches the scrambling sequence parameter, corresponding to the search space and a subframe configuration, and the terminal receives a DMRS and descrambles an EPDCCH by using the switched scrambling sequence parameter.

Terminal, base station, integrated circuit, and communication method

There is provided a terminal device that communicates with a base station apparatus. The device includes: a higher layer processing unit that configures a discovery signal which includes cell-specific reference signals present in DwPTSs of all downlink subframes and all special subframes, a first synchronization signal present in a prescribed subframe, a second synchronization signal present in a first subframe, and one or more non-zero power CSI reference signals during a period of continuous subframes in a predetermined cell; and a reception unit that receives the discovery signal. A subframe offset between the second synchronization signal and the non-zero power CSI reference signal is independently configured for each of the non-zero power CSI reference signals.

Terminal device, base station apparatus and communication method

A cell using an unallocated frequency band or a shared frequency band is efficiently controlled. A terminal device includes a reception unit configured to receive a first downlink physical channel mapped on the basis of a first possible starting position of a downlink transmission and a second downlink physical channel mapped on the basis of a second possible starting position of the downlink transmission. Upon the first possible starting position and the second possible starting position being indicated by a higher layer, the reception unit receives, in a predetermined subframe, either one of the first downlink physical channel or the second downlink physical channel, on a secondary cell having a frame structure type 3.

A terminal device includes means of determining resource elements to which a physical downlink shared channel is mapped for transmission on the physical downlink shared channel in a non-MBSFN subframe that is scheduled by using a downlink control information format 1A based on positions of cell-specific reference signals that are provided by using a physical layer cell identity.

Terminal device, base station device, communication method, and integrated circuit for decoding a physical downlink shared channel in a non-MBSFN subframe

Growing community of inventors

Osaka, Japan

Kazuyuki Shimezawa