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公开(公告)号：US20210315003A1
公开(公告)日：2021-10-07
申请号：US17353375
申请日：2021-06-21
Inventor： TAKASHI IWAI , YOSHIO URABE , TOMOHUMI TAKATA
Abstract: In an AP, a Trigger frame generator generates a trigger signal instructing an uplink signal transmission, the trigger signal including a terminal information field that includes a terminal ID subfield and a resource unit allocation information subfield, and a radio transmitter/receiver transmits the trigger signal. In a case where the trigger signal includes a first terminal information field specifying one or more contiguous resource units for random access, the Trigger frame generator sets an unused ID that is not to be used as a terminal ID in the first terminal information field.
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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：US20200280925A1
公开(公告)日：2020-09-03
申请号：US16643760
申请日：2018-08-22
Inventor： TAKASHI IWAI , TOMOHUMI TAKATA , SHOTARO MAKI
Abstract: In a terminal, a transmission power control unit controls the transmission power of an uplink channel (the PUSCH) by using transmission power control information (a TPC command) indicating one from among a plurality of candidate values. A wireless transmission unit transmits the uplink channel with the above transmission power. Instruction information for resetting a control value (closed loop correction value) to be used in a closed loop control of the transmission power is associated with at least one value among the above plurality of candidate values.
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4.发明申请公开(公告)号：US20220141066A1
公开(公告)日：2022-05-05
申请号：US17578281
申请日：2022-01-18
Inventor： TAKASHI IWAI , TOMOHUMI TAKATA , HIDETOSHI SUZUKI , TETSUYA YAMAMOTO , QUAN KUANG
Abstract: When a plurality of the subcarrier spacing values are applied, a reference signal is generated by using a sequence having a sequence length corresponding to a first ratio of a first subcarrier spacing set for transmission data to the maximum settable subcarrier spacing. The sequence of the reference signal is mapped to a frequency resource at mapping intervals in accordance with a second ratio which is the reciprocal of the first ratio, and the transmission data and the reference signal are transmitted.
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公开(公告)号：US20200044805A1
公开(公告)日：2020-02-06
申请号：US16606395
申请日：2018-04-17
Inventor： TAKASHI IWAI , HIDETOSHI SUZUKI , TOMOHUMI TAKATA , TETSUYA YAMAMOTO
Abstract: In a terminal, a selecting unit selects one generation method from a plurality of generation methods for reference signals (sounding reference signals (SRSs)). A radio transmitting unit transmits reference signals (SRSs) generated in accordance with the selected generation method.
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Patent Agency Ranking
公开(公告)号：US20190082467A1
公开(公告)日：2019-03-14
申请号：US16183280
申请日：2018-11-07
Inventor： TOMOYA NUNOME , TAKASHI IWAI , YOSHIO URABE
Abstract: A wireless station that belongs to a communication cell includes a receiver which, in operation, receives a trigger frame transmitted from an access point that belongs to an interference cell and a controller which, in operation, determines, based on at least one parameter included in the trigger frame and reception power value of the trigger frame received at the wireless station, whether the wireless station is allowed to transmit to other wireless station that belongs to the communication cell, wherein the at least one parameter includes a value set based on transmit power value of the trigger frame transmitted from the access point.
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公开(公告)号：US20200229001A1
公开(公告)日：2020-07-16
申请号：US16643766
申请日：2018-08-22
Inventor： TOMOHUMI TAKATA , TAKASHI IWAI , SHOTARO MAKI , YIHUI LI
Abstract: In a terminal, a transmission power calculation unit calculates a transmission power of an uplink signal by using transmission power control information indicating one value from among a plurality of candidate values respectively associated with correction values that correct a control value to use in a closed loop control of the transmission power. A wireless transmission unit transmits the uplink signal with the above transmission power. A first correction value and a second correction value having a larger step size than the first correction value are associated with each of the plurality of candidate values.
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公开(公告)号：US20200186301A1
公开(公告)日：2020-06-11
申请号：US16618608
申请日：2018-05-07
Inventor： TOMOYA NUNOME , AYAKO HORIUCHI , TAKASHI IWAI , HIDETOSHI SUZUKI
Abstract: In a terminal, based on a first parameter included in each of a plurality of downlink control signals, the first parameter indicating a cumulative count of code block groups (CBGs) configuring each of a plurality of transport blocks (TBs) assigned by the plurality of downlink control signals, a HARQ-ACK generation unit generates a response signal (HARQ-ACK) for each of the code block groups. A transmission unit collectively transmits the response signals for each of the code block groups.
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9.发明申请公开(公告)号：US20240396778A1
公开(公告)日：2024-11-28
申请号：US18796123
申请日：2024-08-06
Inventor： TAKASHI IWAI , TOMOHUMI TAKATA , HIDETOSHI SUZUKI , TETSUYA YAMAMOTO , QUAN KUANG
Abstract: When a plurality of the subcarrier spacing values are applied, a reference signal is generated by using a sequence having a sequence length corresponding to a first ratio of a first subcarrier spacing set for transmission data to the maximum settable subcarrier spacing. The sequence of the reference signal is mapped to a frequency resource at mapping intervals in accordance with a second ratio which is the reciprocal of the first ratio, and the transmission data and the reference signal are transmitted.
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公开(公告)号：US20240089052A1
公开(公告)日：2024-03-14
申请号：US18516337
申请日：2023-11-21
Inventor： TOMOHUMI TAKATA , TAKASHI IWAI , HIDETOSHI SUZUKI , AYAKO HORIUCHI , JOACHIM LOEHR , TETSUYA YAMAMOTO
CPC classification number: H04L5/0048 , H04L5/0053 , H04L5/143 , H04L27/0006 , H04L27/2607
Abstract: A base station (100, 300) is provided with a transmitter and a receiver. The transmitter (109) 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 (111) 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.
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