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公开(公告)号：US20230396382A1
公开(公告)日：2023-12-07
申请号：US18447975
申请日：2023-08-10
Inventor： TETSUYA YAMAMOTO , MASAYUKI HOSHINO , SEIGO NAKAO
IPC: H04L5/00 , H04J13/18 , H04L27/26 , H04W72/0446
CPC classification number: H04L5/0048 , H04J13/18 , H04L5/0051 , H04L27/2607 , H04W72/0446 , H04L5/0016
Abstract: A base station selects, from among a plurality of code sequences orthogonal to one another, one code sequence by which an uplink signal including a demodulation reference signal repeated in a plurality of subframes is multiplied and transmits, to a terminal for which transmission of the repeated uplink signal is configured, information indicating the selected code sequence by using a field for indicating a cyclic shift and an orthogonal sequence used for the demodulation reference signal. A terminal receives information indicating one of a plurality of code sequences orthogonal to one another using a field for indicating a cyclic shift and an orthogonal sequence used for a demodulation reference signal and multiplies an uplink signal including the demodulation reference signal repeated in a plurality of subframes by the code sequence indicated by the information.
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公开(公告)号：US20230018154A1
公开(公告)日：2023-01-19
申请号：US17948967
申请日：2022-09-20
Inventor： TETSUYA YAMAMOTO , HIDETOSHI SUZUKI
Abstract: In a terminal, a control unit decides a sequence used for an uplink control channel, in accordance with uplink control information, and a transmission unit transmits the uplink control information using the sequence. Here, the sequence is calculated using cell identification information that identifies the cell to which the terminal belongs, and subcell-specific information relating to at least one subcell included in the cell.
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公开(公告)号：US20220123893A1
公开(公告)日：2022-04-21
申请号：US17565313
申请日：2021-12-29
Inventor： TETSUYA YAMAMOTO , MASAYUKI HOSHINO , SEIGO NAKAO
Abstract: A base station selects, from among a plurality of code sequences orthogonal to one another, one code sequence by which an uplink signal including a demodulation reference signal repeated in a plurality of subframes is multiplied and transmits, to a terminal for which transmission of the repeated uplink signal is configured, information indicating the selected code sequence by using a field for indicating a cyclic shift and an orthogonal sequence used for the demodulation reference signal. A terminal receives information indicating one of a plurality of code sequences orthogonal to one another using a field for indicating a cyclic shift and an orthogonal sequence used for a demodulation reference signal and multiplies an uplink signal including the demodulation reference signal repeated in a plurality of subframes by the code sequence indicated by the information.
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公开(公告)号：US20200092066A1
公开(公告)日：2020-03-19
申请号：US16692745
申请日：2019-11-22
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：US20250016780A1
公开(公告)日：2025-01-09
申请号：US18890579
申请日：2024-09-19
Inventor： TETSUYA YAMAMOTO , HIDETOSHI SUZUKI
IPC: H04W72/21 , H04L5/00 , H04L27/26 , H04W72/541
Abstract: In a terminal, a control unit decides a sequence used for an uplink control channel, in accordance with uplink control information, and a transmission unit transmits the uplink control information using the sequence. Here, the sequence is calculated using cell identification information that identifies the cell to which the terminal belongs, and subcell-specific information relating to at least one subcell included in the cell.
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Patent Agency Ranking
公开(公告)号：US20240333446A1
公开(公告)日：2024-10-03
申请号：US18737773
申请日：2024-06-07
Inventor： TETSUYA YAMAMOTO , MASAYUKI HOSHINO , SEIGO NAKAO
IPC: H04L5/00 , H04J13/18 , H04L27/26 , H04W72/0446
CPC classification number: H04L5/0048 , H04J13/18 , H04L5/0051 , H04L27/2607 , H04W72/0446 , H04L5/0016
Abstract: A base station selects, from among a plurality of code sequences orthogonal to one another, one code sequence by which an uplink signal including a demodulation reference signal repeated in a plurality of subframes is multiplied and transmits, to a terminal for which transmission of the repeated uplink signal is configured, information indicating the selected code sequence by using a field for indicating a cyclic shift and an orthogonal sequence used for the demodulation reference signal. A terminal receives information indicating one of a plurality of code sequences orthogonal to one another using a field for indicating a cyclic shift and an orthogonal sequence used for a demodulation reference signal and multiplies an uplink signal including the demodulation reference signal repeated in a plurality of subframes by the code sequence indicated by the information.
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公开(公告)号：US20200329459A1
公开(公告)日：2020-10-15
申请号：US16306378
申请日：2017-05-19
Inventor： TAKASHI IWAI , AYAKO HORIUCHI , TETSUYA YAMAMOTO , TOMOHUMI TAKATA
Abstract: In a base station, a transmission unit transmits a downlink control signal and downlink data assigned by the downlink control signal in a time unit including a downlink time resource for the downlink control signal, a downlink time resource for the downlink data, and an uplink time resource for a response signal for the downlink data. A reception unit receives the response signal in the time unit. A transmission bandwidth of the response signal is equal to or lower than a transmission bandwidth of the downlink data corresponding to the response signal.
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公开(公告)号：US20200187030A1
公开(公告)日：2020-06-11
申请号：US16794493
申请日：2020-02-19
Inventor： TETSUYA YAMAMOTO , HIDETOSHI SUZUKI , MASAYUKI HOSHINO
IPC: H04W24/06 , H04B7/10 , H04L27/26 , H04L5/00 , H04B7/08 , H04B7/155 , H04L1/08 , H04L1/18 , H04B17/309 , H04B17/00
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：US20200022133A1
公开(公告)日：2020-01-16
申请号：US16492937
申请日：2018-03-05
Inventor： TETSUYA YAMAMOTO , HIDETOSHI SUZUKI
Abstract: In a terminal, in a case where the sum of the transmission power for a first signal and the transmission power for a second signal that requires lower latency and higher reliability than the first signal exceeds the maximum transmission power in an overlap interval in which a transmission of the first signal and a transmission of the second signal occur at the same time, a control unit carries out power scaling with the quality of the second signal being prioritized over the quality of the first signal, in at least the overlap interval. A transmission unit transmits the first signal and the second signal obtained after the power scaling.
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公开(公告)号：US20190020455A1
公开(公告)日：2019-01-17
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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