Panasonic Intellectual Property Corporation of America

Sony Corporation

Canon Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Nissan Motor Company Limited

Sun Patent Trust

Fuji Electric Co., Ltd.

Toshiba Memory Corporation

Kioxia Corporation

Toshiba Electronic Devices & Storage Corporation

Isuzu Motors Limited

Tokyo Institute of Technology

Jfe Steel Corporation

Tetsuya Yamamoto

Hidetoshi Suzuki

Masanori Hosomi

Hiroshi Kano

Yutaka Higo

Hiroyuki Ohmori

Ayako Horiuchi

Kazutaka Yamane

Yuki Oishi

Lilei Wang

Takashi Iwai

Kazuhiro Bessho

Masayuki Hoshino

Seigo Nakao

Hongchao Li

Kazuhiro Ohba

Minoru Ikarashi

Alexander Golitschek Edler Von Elbwart

Tetsuya Mizuguchi

Ankit Bhamri

Tomoya Nunome

Tomohumi Takata

Takeyuki Sone

Tomofumi Takata

Quan Kuang

Taku Nishiyama

Yoshihiko Ogawa

Chi Gao

Masatoshi Itoh

Rikin Shah

Yasunari Sugiyama

Shinichiro Kusunoki

Naohisa Okumura

Ming-Hung Tao

Kiyokazu Okada

Norio Kosaka

Akihiko Nishio

Joachim Loehr

Atsushi Iwasaki

Tsutomu Ishida

Katsumi Kimura

Shotaro Maki

Youji Shimizu

Kentaro Yamashita

Naoya Shibaike

Yihui Li

Yasuo Takemoto

Daisuke Usami

Yoriyasu Ando

Seiko Kawai

Ryusuke Ueki

Prateek Basu Mallick

Yasushi Fujinami

Takuya Futatsuyama

Yasuaki Yuda

Sujuan Feng

Kenichi Nakanishi

Yoshihiro Kato

Kenji Maruyama

Ken Ishii

Michio Uchida

Hideki Koyanagi

Tomonori Shida

Hideaki Okubo

Yusuke Nakashima

Tsunenori Shiimoto

Tatsuo Shinbashi

Haruhiko Terada

Hiroshi Watanabe

Mitsuru Shimizu

Katsumi Okayama

Yusuke Dohi

Kazuhiko Hayashi

Yukihiro Saeki

Hiroyuki Iwaki

Hiroyuki Sumi

Takao Kawazu

Kiyoshi Fukada

Mitsuharu Shouji

Madhav Gupta

Keisuke Mitsuhashi

Mitsuharu Shoji

Yotaro Shiraishi

Izumi Shimoyama

Youhei Suzuki

Hiroaki Narisawa

Kaoru Kobayashi

Takao Maeda

Yuichi Yamakawa

Fumiyuki Adachi

Masayuki Shishido

Keitaro Endo

Kakeru Yamaguchi

Hitoshi Kondo

Shinya Kubo

Tomonori Tahara

Akira Uchida

Matatoshi Honjo

In a terminal, a signal allocation unit allocates uplink control information including at least one of a response signal responsive to downlink data and an uplink radio resource allocation request signal to a resource for an uplink control channel on the basis of a mode selected from among a plurality of modes relating to the channel configuration of the uplink control channel in accordance with an operating environment of the terminal. A transmitting unit transmits the uplink control information.

Terminal and communication method

In a base station (), a controller () determines one set from among a plurality of sets, each of which including one or more candidates for a resource for an uplink (UL) control channel during initial access, and determines one candidate from among the one or more candidates for the resource, which is included in the determined set. A transmitter () indicates the determined set to a terminal () by higher layer signaling, and indicates the determined candidate by dynamic signaling. A receiver () receives a UL control signal, using the resource corresponding to the determined candidate in the determined set. In the base station, the association between a value to be indicated by the higher layer signaling and the plurality of sets is configured for each of one or more parameters relating to the initial access.

Base station, terminal, and communication method

A base station () is provided with a transmitter and a receiver. The transmitter () transmits a downlink signal in a downlink transmission region, in a time unit that includes the downlink transmission region, an uplink transmission region, and a gap period that is a switching point between the downlink transmission region and the uplink transmission region. The receiver () receives an uplink signal in the uplink transmission region, in the time unit. Furthermore, a delay tolerant signal for which a delay is tolerated more than for the downlink signal and the uplink signal is mapped to within the gap period.

A repetition unit () performs a repetition for mapping a data signal and a demodulation reference signal (DMRS) repeatedly at a symbol level over a plurality of subframes. A signal allocation unit () maps, in the a plurality of subframes, the repeated DMRS to symbols other than symbols corresponding to an SRS resource candidate, which is a candidate for a resource to which a sounding reference signal (SRS) to be used to measure an uplink received signal quality is to be mapped. A transmission unit () transmits an uplink signal (PUSCH) including the DMRS and the data signal over the a plurality of subframes.

Communication apparatus and transmission method for transmitting a demodulation reference signal

A terminal, with which it is possible to improve the efficiency of a random access process. In a terminal, a control unit dynamically determines a parameter pertaining to the transmission of a data part out of a random access signal that includes a preamble part and the data part. A transmission unit notifies the determined parameter to a base station using the random access signal.

In an operation in a license-exempt band (unlicensed band), the present invention contributes to the provision of a mobile station, a base station, a transmission method and a receiving method which suitably transmit and receive a signal. The mobile stationincludes: a transmission unitwhich transmits an uplink signal; and a control unitwhich, when a first number indicating a first resource amount that can be used in the transmission of the uplink signal includes a third number, which is different from a specific second number, as a prime factor, controls the transmission of a signal of a fourth number that does not include the third number as the prime factor by using a second resource.

Mobile station, base station, transmission method and receiving method

Provided is a terminal comprising: a control circuit which, on the basis of the size of information indicating resource allocation relating to uplink control information, controls allocation of an uplink resource with respect to the uplink control information; and a transmit circuit for transmitting the uplink control information in the uplink resource.

This terminal comprises a reception circuit that receives parameters pertaining to a license-exempt band, and a control circuit that determines information included in uplink control information on the basis of the parameters.

In a case where, in a first network, a first pattern, in which each of time division duplex (TDD) time slots is assigned to uplink or downlink Which is a direction of communication between a base station and a terminal, is used and, in a second network that is different from the first network, the first pattern and a second pattern that is different from the first pattern in assignment of the direction of communication to the time slots can be used for communication by TDD between a base station and a terminal, a control apparatus controls, based on that a predetermined condition has been satisfied, a base station belonging to the second network so as to use time slots in which the direction of communication that has been assigned coincides between the first and the second patterns.

Control method, control apparatus, and storage medium

If repetition transmission is applied to a response signal for a downlink data signal and an uplink signal, the uplink signal is repeatedly transmitted using a certain number of consecutive subframes starting with a first subframe, at which the repetition transmission of the uplink signal starts, and the response signal is repeatedly transmitted using at least the certain number of consecutive subframes starting with a second subframe, at which the repetition transmission of the response signal starts. The first subframe is set to be the same as the second subframe.

Terminal, base station, transmission method, and reception method

A user equipment, a base station and respective methods are provided. The user equipment receives a physical uplink shared channel (PUSCH) config information element (IE) in form of radio resource control (RRC) signaling, the PUSCH config IE being applicable to a particular bandwidth part. The user equipment configures a table which is defined by a PUSCH time domain resource allocation list IE carried in the received PUSCH config IE, the table comprising rows, at least one row comprising a first set of values related to allocated time-domain resources for a plurality of PUSCH transmissions. The user equipment receives downlink control information (DCI) signaling carrying a time-domain resource assignment filed with value m, wherein the value m provides a row index m+1 to the RRC configured table. The user equipment determines allocated time-domain resources for the plurality of PUSCH transmissions based on the index of the slot carrying the received DCI.

User equipment and system performing transmission and reception operations

A communication apparatus performs, during establishment of connection with a base station, synchronization processing for obtaining reference time information of a time synchronization system and establishing time synchronization, sets a time interval for performing the synchronization processing based on an error of an intra-apparatus time held in the communication apparatus with respect to time information represented by the reference time information, and in a non-connected state, based on the time interval, requests the base station to cause the communication apparatus to transition to a connected state at a timing when the synchronization processing should be performed, wherein the synchronization processing is performed at a timing based on the time interval, at which the communication apparatus is operating in the connected state.

Communication apparatus, control method, and non-transitory computer-readable storage medium

A repeater generates repetition signals by repeating uplink signals over a plurality of subframes; controller sets a timing for transmitting the repetition signals, based on information indicating a transmission candidate subframe for a sounding reference signal used for measuring an uplink reception quality; and a transmitter transmits the repetition signals at the set timing.

According to the present invention, a base station can dynamically change a repetition transmission method as appropriate. In a base station (), a repetition control unit () determines a data repetition pattern for a terminal (). A transmission unit () repeatedly transmits data (repetition transmission) on the basis of the repetition pattern. The data repetition pattern corresponds to control information to be reported to the terminal () by dynamic signaling.

Transmission device, reception device, transmission method, and reception method

The present invention provides a terminal that can carry out a random-access process appropriately. A terminal () is provided with: a wireless transmission unit () that transmits a data signal; and a control unit () that determines a second resource for use in transmitting the data signal on the basis of a first resource for use in transmitting a preamble signal.

Transmission device, reception device, transmission method, and reception method using random access preamble

Growing community of inventors

Kanagawa, Japan

Tetsuya Yamamoto