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公开(公告)号：US12107784B2
公开(公告)日：2024-10-01
申请号：US17434243
申请日：2019-11-27
Inventor： Lei Huang , Akihiko Nishio , Tien Ming (Benjamin) Koh
IPC: H04W4/00 , H04L5/00 , H04W72/0446
CPC classification number: H04L5/0048 , H04L5/0092 , H04W72/0446
Abstract: A terminal includes a receiver, which in operation, receives one or more discovery reference signal (DRS) transmitted by a base station within a channel occupancy time (COT) starting at a possible starting position that is not aligned with half a slot boundary. The terminal includes circuitry, which in operation, determines frame timing in response to receiving the one or more DRS.
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公开(公告)号：US10484155B2
公开(公告)日：2019-11-19
申请号：US16157963
申请日：2018-10-11
Inventor： Ayako Horiuchi , Akihiko Nishio
Abstract: Provided is a wireless communication device. A PHICH reception unit determines whether a received signal in a PHICH region is an ACK signal or a NACK signal. When doing so, the PHICH reception unit does not receive a PHICH in a subframe in which a terminal monitors an E-PDCCH. A control signal reception unit outputs a retransmission prompting signal to a signal allocation unit when the signal outputted from the PHICH reception unit is a NACK signal and when a UL grant was not detected. Meanwhile, when a UL grant was detected, the control signal reception unit outputs the detected UL grant to the signal allocation unit. The signal allocation unit maps the transmission signal in accordance with the retransmission prompting signal and the UL grant and transmits the transmission signal from a wireless transmission unit.
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公开(公告)号：US20190044684A1
公开(公告)日：2019-02-07
申请号：US16157963
申请日：2018-10-11
Inventor： Ayako Horiuchi , Akihiko Nishio
CPC classification number: H04L5/0048 , H04L1/1812 , H04L1/1822 , H04L1/1854 , H04L1/1887 , H04L1/1896 , H04L5/0055 , H04L2001/125 , H04W72/0413 , H04W72/042 , H04W72/14
Abstract: Provided is a wireless communication device. A PHICH reception unit determines whether a received signal in a PHICH region is an ACK signal or a NACK signal. When doing so, the PHICH reception unit does not receive a PHICH in a subframe in which a terminal monitors an E-PDCCH. A control signal reception unit outputs a retransmission prompting signal to a signal allocation unit when the signal outputted from the PHICH reception unit is a NACK signal and when a UL grant was not detected. Meanwhile, when a UL grant was detected, the control signal reception unit outputs the detected UL grant to the signal allocation unit. The signal allocation unit maps the transmission signal in accordance with the retransmission prompting signal and the UL grant and transmits the transmission signal from a wireless transmission unit.
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公开(公告)号：US09820274B2
公开(公告)日：2017-11-14
申请号：US15053963
申请日：2016-02-25
Inventor： Zhi Zhang , Ming Xu , Masayuki Hoshino , Daichi Imamura , Akihiko Nishio
CPC classification number: H04W72/044 , H04L5/0016 , H04L5/0051 , H04L25/0226 , H04L27/2613 , H04W72/121
Abstract: Method of scrambling signals, transmission point device, and user equipment using the method are provided. The method includes: sending an ID table to a user equipment through higher layer signaling, the ID table being a subset of the whole ID space and containing available IDs for the user equipment; notifying the user equipment an ID in the ID table to be used through physical layer signaling or UE specific higher layer signaling; generating a random seed based on the notified ID; initializing a scrambling sequence by the random seed; and scrambling the signals with the initialized scrambling sequence. The method of the disclosure, by combining physical layer signaling and higher layer signaling, may notify the used group ID and the blind detection space to a UE, wherein the blind detection for the UE is enabled and the signaling overhead is reduced.
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45.发明授权公开(公告)号：US09813263B2
公开(公告)日：2017-11-07
申请号：US14378071
申请日：2013-02-22
Inventor： Takashi Iwai , Daichi Imamura , Akihiko Nishio , Yoshihiko Ogawa , Kazuki Takeda
IPC: H04J1/16 , H04L25/02 , H04J13/22 , H04J11/00 , H04J13/00 , H04B7/024 , H04L5/00 , H04L25/03 , H04B7/0452 , H04W84/04
CPC classification number: H04L25/024 , H04B7/024 , H04B7/0452 , H04J11/005 , H04J13/0062 , H04J13/22 , H04L5/001 , H04L5/0048 , H04L25/0204 , H04L25/022 , H04L25/0228 , H04L25/03159 , H04L2025/03426 , H04W84/042
Abstract: The present invention adopts a configuration such that when cooperative reception by a plurality of base stations is not applied, a reference signal sequence determined from a selection baseline value corresponding to the number of a sequence group allocated to a cell belonging to the device in question is selected from among a plurality of selection baseline values as a reference signal sequence for non-cooperative reception, whereas when cooperative reception by a plurality of base stations is applied, a reference signal sequence determined from one or more intermediate selection baseline values set between two adjacent selection baseline values corresponding to the number of a sequence group allocated individually to a terminal device is selected among the plurality of selection baseline values as a reference signal sequence for cooperative reception differing from the reference signal sequence for non-cooperative reception.
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Patent Agency Ranking
公开(公告)号：US09680683B2
公开(公告)日：2017-06-13
申请号：US14192085
申请日：2014-02-27
Inventor： Kenichi Miyoshi , Akihiko Nishio , Takashi Iwai , Sadaki Futagi , Katsuhiko Hiramatsu , Daichi Imamura , Takashi Aramaki
CPC classification number: H04L27/2666 , H04L25/03159 , H04L27/2607 , H04L27/2646 , H04L27/2647 , H04L27/2662
Abstract: A radio receiver apparatus that can effectively utilize GI to improve the reception quality. In this apparatus, a data extracting part extracts a data portion of a direct wave from a signal subjected to a radio reception process by a received RF part. A GI extracting part extracts, from the signal subjected to the radio reception process by the received RF part, GI having a length determined by an extracted GI length deciding part. The extracted GI is adjusted by a data position adjusting part such that its rear end coincides with the read end of the extracted data portion. A combining part combines the extracted data portion with the GI the data position of which has been adjusted. The combined signal is then supplied to a frequency axis equalizing part, which equalizes the signal distortions of the combined signal on the frequency axis.
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公开(公告)号：US09660785B2
公开(公告)日：2017-05-23
申请号：US14551802
申请日：2014-11-24
Inventor： Akihiko Nishio , Hidetoshi Suzuki , Christian Wengerter
CPC classification number: H04L1/001 , H04L1/0004 , H04L1/0038 , H04L1/04 , H04L5/0005 , H04L5/0039 , H04L5/0041 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0091 , H04L5/0094 , H04L27/2626 , H04W52/0206 , Y02D70/00
Abstract: A radio communication base station device which can reduce the number of judgment times for a control signal in a mobile station, thereby suppressing power consumption by the mobile station. The radio communication base station device (100) includes: a mapping setting unit (122) which sets a mapping method in a mapping unit (102); the mapping unit (102) which maps a control signal to respective mobile stations to any of subcarriers constituting the OFDM symbol according to the mapping method set by the mapping setting unit (122); an MCS setting unit (121) which references a mapping table in which correlation between a plurality of MCS having different MCS levels and mapping methods is set according to the judgment result of the mapping setting unit (122) and sets MCS in encoding/modulation units (101-1 to 101-n).
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公开(公告)号：US20170041114A1
公开(公告)日：2017-02-09
申请号：US15334079
申请日：2016-10-25
Inventor： Ayako Horiuchi , Akihiko Nishio
CPC classification number: H04L5/0048 , H04L1/1812 , H04L1/1822 , H04L1/1854 , H04L1/1887 , H04L1/1896 , H04L5/0055 , H04L2001/125 , H04W72/0413 , H04W72/042 , H04W72/14
Abstract: Provided is a wireless communication device. A PHICH reception unit determines whether a received signal in a PHICH region is an ACK signal or a NACK signal. When doing so, the PHICH reception unit does not receive a PHICH in a subframe in which a terminal monitors an E-PDCCH. A control signal reception unit outputs a retransmission prompting signal to a signal allocation unit when the signal outputted from the PHICH reception unit is a NACK signal and when a UL grant was not detected. Meanwhile, when a UL grant was detected, the control signal reception unit outputs the detected UL grant to the signal allocation unit. The signal allocation unit maps the transmission signal in accordance with the retransmission prompting signal and the UL grant and transmits the transmission signal from a wireless transmission unit.
Abstract translation: 提供了一种无线通信设备。 PHICH接收单元确定PHICH区域中的接收信号是ACK信号还是NACK信号。 当这样做时，PHICH接收单元在终端监视E-PDCCH的子帧中不接收PHICH。 当从PHICH接收单元输出的信号是NACK信号和未被检测到UL授权时，控制信号接收单元向信号分配单元输出重发提示信号。 同时，当检测到UL授权时，控制信号接收单元将检测到的UL许可输出到信号分配单元。 信号分配单元根据重传提示信号和UL授权映射发送信号，并从无线发送单元发送发送信号。
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公开(公告)号：US20160330727A1
公开(公告)日：2016-11-10
申请号：US15216641
申请日：2016-07-21
Inventor： Daichi Imamura , Hidetoshi Suzuki , Akihiko Nishio , Atsushi Matsumoto
Abstract: Provided are a radio transmission device and a radio transmission method capable of improving downlink and uplink throughput even when performing dynamic symbol allocation. In the device and the method, BS and MS share a table correlating a basic TF as a combination of parameters such as TB size used for transmitting only user data, an allocation RB quantity, a modulation method, and an encoding ratio, with a derived TF having user data of different TB size by combining L1/L2 control information. Even when multiplexing L1/L2 control information, Index corresponding to the basic TF is reported from BS to MS.
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公开(公告)号：US09432972B2
公开(公告)日：2016-08-30
申请号：US13918654
申请日：2013-06-14
Inventor： Daichi Imamura , Hidetoshi Suzuki , Akihiko Nishio , Atsushi Matsumoto
CPC classification number: H04W72/0406 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/0029 , H04L1/1671
Abstract: Provided are a radio transmission device and a radio transmission method capable of improving downlink and uplink throughput even when performing dynamic symbol allocation. In the device and the method, BS and MS share a table correlating a basic TF as a combination of parameters such as TB size used for transmitting only user data, an allocation RB quantity, a modulation method, and an encoding ratio, with a derived TF having user data of different TB size by combining L1/L2 control information. Even when multiplexing L1/L2 control information, Index corresponding to the basic TF is reported from BS to MS.
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