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公开(公告)号：US11502885B2
公开(公告)日：2022-11-15
申请号：US17251710
申请日：2019-04-04
Inventor： Tetsuya Yamamoto , Hidetoshi Suzuki
Abstract: The present disclosure provides a base station capable of improving the frequency utilization efficiency in uplink. In the base station (100), a receiver (112) receives a transmission signal to be repeatedly transmitted over a plurality of allocation units, and a reception signal processor (114) demodulates the transmission signal based on a combination of non-orthogonal multiple access where signals of a plurality of terminals are not orthogonal with each other, and orthogonal multiple access where signals of a plurality of terminals are orthogonal with each other.
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公开(公告)号：US11212815B2
公开(公告)日：2021-12-28
申请号：US16321665
申请日：2016-08-10
Inventor： Lilei Wang , Hidetoshi Suzuki , Ayako Horiuchi , Tetsuya Yamamoto
Abstract: There are provided a wireless communication method, apparatus and system. The apparatus, at a first node configured to receive a first channel and/or transmit a second channel, comprising: a receiver, which in operation, receives a first channel; a transmitter, which in operation, transmits a second channel; a circuitry, which, in operation, determines at least part of at least one of the first channel and the second channel to be shortened, according to characteristic of the at least one of the first channel and the second channel, and, in response to said determining, shortens the at least part of the at least one of the first channel and the second channel.
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13.发明申请公开(公告)号：US20210135817A1
公开(公告)日：2021-05-06
申请号：US17145811
申请日：2021-01-11
Inventor： Tetsuya Yamamoto , Ayako Horiuchi
Abstract: A repetition unit (212) 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 (213) 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 (216) transmits an uplink signal (PUSCH) including the DMRS and the data signal over the a plurality of subframes.
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14.发明授权公开(公告)号：US10924234B2
公开(公告)日：2021-02-16
申请号：US16064971
申请日：2016-12-08
Inventor： Tetsuya Yamamoto , Ayako Horiuchi
Abstract: A repetition unit (212) 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 (213) 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 (216) transmits an uplink signal (PUSCH) including the DMRS and the data signal over the a plurality of subframes.
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公开(公告)号：US10693601B2
公开(公告)日：2020-06-23
申请号：US16156585
申请日：2018-10-10
Inventor： Tetsuya Yamamoto , Seigo Nakao , Hidetoshi Suzuki , Masayuki Hoshino
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US10305662B2
公开(公告)日：2019-05-28
申请号：US15698054
申请日：2017-09-07
Inventor： Lilei Wang , Hidetoshi Suzuki , Tetsuya Yamamoto , Masayuki Hoshino
Abstract: Wireless communication methods and devices are provided. The wireless communication method includes transmitting a reference signal and a data signal in a Physical Resource Block (PRB) with a coverage enhancement level, wherein the number of resource elements transmitting the reference signal in the PRB is determined by the coverage enhancement level, the channel type and/or the coding rate of the data signal.
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公开(公告)号：US10128990B2
公开(公告)日：2018-11-13
申请号：US15088269
申请日：2016-04-01
Inventor： Tetsuya Yamamoto , Seigo Nakao , Hidetoshi Suzuki , Masayuki Hoshino
Abstract: 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.
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公开(公告)号：US10084636B2
公开(公告)日：2018-09-25
申请号：US15190187
申请日：2016-06-23
Inventor： Yasuaki Yuda , Seigo Nakao , Masayuki Hoshino , Tetsuya Yamamoto , Fumiyuki Adachi
CPC classification number: H04L41/0226 , H04L5/0048 , H04L27/2626 , H04L27/2663 , H04L27/2675
Abstract: In a transmission apparatus, a mapper maps frequency components of an analog signal at equally spaced discrete locations within a transmission frequency band, a time-division multiplexer time-division multiplexes the analog signal and a preamble signal to generate a transmission signal, the preamble signal being a digital signal whose frequency components are continuously mapped over the transmission frequency band, and a transmitter transmits the transmission signal, wherein an autocorrelation value of the transmission signal being to be used for timing synchronization at a reception apparatus that receives the transmission signal.
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公开(公告)号：US12237960B2
公开(公告)日：2025-02-25
申请号：US18510421
申请日：2023-11-15
Inventor： Tetsuya Yamamoto , Hidetoshi Suzuki , Masayuki Hoshino
IPC: H04B7/10 , H04B7/08 , H04B7/155 , H04B17/00 , H04B17/309 , H04L1/08 , H04L1/1829 , H04L5/00 , H04L27/26 , H04W24/06 , H04W72/542
Abstract: 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.
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公开(公告)号：US12231237B2
公开(公告)日：2025-02-18
申请号：US18429146
申请日：2024-01-31
Inventor： Takashi Iwai , Tetsuya Yamamoto , Tomoya Nunome , Tomofumi Takata
Abstract: According to the present invention, a base station can dynamically change a repetition transmission method as appropriate. In a base station (100), a repetition control unit (103) determines a data repetition pattern for a terminal (200). A transmission unit (109) 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 (200) by dynamic signaling.
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