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公开(公告)号:US20210112535A1
公开(公告)日:2021-04-15
申请号:US17131286
申请日:2020-12-22
Inventor: Lilei Wang , Kazuki Takeda , Ayako Horiuchi , Alexander Golitschek Edler von Elbwart , Masayuki Hoshino , Yoshihiko Ogawa
Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.
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公开(公告)号:US10750516B2
公开(公告)日:2020-08-18
申请号:US16038960
申请日:2018-07-18
Inventor: Masayuki Hoshino , Ayako Horiuchi , Seigo Nakao
Abstract: A reception processor receives the cell detection reference signals, each of the cell detection reference signals being transmitted from corresponding one of a plurality of cells. An RRM report generator generates measurement information indicating a measurement result of reception quality measured using the cell detection reference signal. A transmission processor transmits the measurement information. The cell detection reference signals are mapped to any one of a plurality of candidate resources, which is a part of a plurality of resources set for other reference signals in a subframe to which the cell detection reference signals are mapped.
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公开(公告)号:US10742466B2
公开(公告)日:2020-08-11
申请号:US16086543
申请日:2016-03-30
Abstract: Provided are wireless communication devices and methods. A wireless communication device can comprise: circuitry operative to map at least a first type of reference signals (RSs) onto orthogonal frequency division multiplexing (OFDM) symbol (s) other than the OFDM symbols onto which shortened transmission time intervals (TTIs) are mapped in a subframe, each of the shortened TTIs comprising 1-7 OFDM symbols; and a transmitter operative to transmit a physical channel in one of the shortened TTIs and transmit at least the first type of RSs.
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公开(公告)号:US10651959B2
公开(公告)日:2020-05-12
申请号:US16033123
申请日:2018-07-11
Inventor: Ayako Horiuchi , Masayuki Hoshino , Seigo Nakao
IPC: H04B17/318 , H04L5/00 , H04W48/12
Abstract: Received Signal Strength Indicator (RSSI) is measured accurately even in a case where a discovery signal is transmitted. A receiver receives a plurality of subframes, at least one of which includes a discovery signal, and a measurer measures Reference Signal Reception Power (RSRP) using a first resource in which the discovery signal is mapped, measures RSSI using a second resource different from the first resource for which the discovery signal is mapped, and calculates Reference Signal Reception Quality (RSRQ) using RSRP and RSSI.
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公开(公告)号:US10581483B2
公开(公告)日:2020-03-03
申请号:US15772505
申请日:2016-10-25
Inventor: Tetsuya Yamamoto , Hidetoshi Suzuki , Ayako Horiuchi
Abstract: In the present invention, regarding a narrowband used in a subframe for transmitting uplink data, if a switch is made from a first narrowband used in a first subframe to a second narrowband that is different from the first narrowband, with respect to a second subframe continuing to the first subframe, a final one symbol of the first subframe and an initial one symbol of the second subframe are punctured and set as a retuning time to transmit the uplink data in the first narrowband and the second narrowband.
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公开(公告)号:US10531339B2
公开(公告)日:2020-01-07
申请号:US14432667
申请日:2013-09-25
Inventor: Ayako Horiuchi , Takashi Tamura , Koji Yamamoto , Tomohiko Mimura
Abstract: In this device: a gain calculator (101) uses a function in which the variable is a first resource amount from among the resource amounts possessed by an operator in question, and calculates a second resource amount at which the maximum gain is reached in the function of the operator to which the device in question belongs, the first resource amount being a resource amount allocated to a terminal belonging to another operator; a transmitter/receiver (102) transmits the second resource amount to the manager (300), and receives, from the manager (300), the minimum value among second resource amounts calculated in each of the operators; and the allocation unit (103) allocates resources to the signal of the terminal belonging to the operator in question and to the terminal belonging to the other operator on the basis of the minimum value among the second resource amounts calculated by each of the operators.
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公开(公告)号:US10433231B2
公开(公告)日:2019-10-01
申请号:US15160561
申请日:2016-05-20
Inventor: Masaaki Suzuki , Hidetoshi Suzuki , Ayako Horiuchi , Masayuki Hoshino
Abstract: In a terminal that judges whether to trigger a handover from a serving cell to another cell, a RSRQ/RSRP measurer measures a first received quality value by using a cell-specific reference signal transmitted from the neighboring cell or a second received quality value by using a cell-detection reference signal transmitted from the neighboring cell. An offset adder calculates a third received quality value by adding an offset value to the second received quality value. A judging circuitry judges whether the first received quality value or the third received quality value satisfies a handover triggering condition with reference to the cell-specific reference signal. A transmitter transmits trigger information to the neighboring cell in order to activate handover from a serving cell to the neighboring cell, based on the judgement results.
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公开(公告)号:US20180070338A1
公开(公告)日:2018-03-08
申请号:US15808352
申请日:2017-11-09
Inventor: Lilei Wang , Kazuki Takeda , Ayako Horiuchi , Alexander Golitschek Edler von Elbwart , Masayuki Hoshino , Yoshihiko Ogawa
CPC classification number: H04W72/042 , H04L5/0023 , H04L5/0035 , H04L5/0048 , H04L5/0094 , H04L25/0226 , H04W16/32
Abstract: The present disclosure aims at allowing a demodulation reference signal (DMRS) pattern suitable for a terminal to be selected from among a plurality of DMRS patterns including Legacy DMRS and Reduced DMRS. Disclosed is a terminal including: reception section 21 that receives uplink control information; control section 23 that determines a specific mapping pattern from among a plurality of mapping patterns for an uplink DMRS on the basis of the control information; and DMRS generating section 24 that generates a DMRS according to the specific mapping pattern.
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公开(公告)号:US09794042B2
公开(公告)日:2017-10-17
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.
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公开(公告)号:US20170099655A1
公开(公告)日:2017-04-06
申请号:US15384121
申请日:2016-12-19
Inventor: Alexander Golitschek Edler von Elbwart , Ayako Horiuchi
CPC classification number: H04W72/042 , H04J11/00 , H04L5/0007 , H04L5/0042 , H04L5/0053 , H04L5/0094 , H04W72/0453 , H04W72/048 , H04W88/08
Abstract: The invention relates to a universal mapping of resource elements (REs) to enhanced resource element groups (eREG) that applies to both the PDCCH and PDSCH regions; the mapping is universal since it is not user or cell-specific but applies to the resource block pairs irrespective of the actual reference signals used. The mapping is such that all REs of the resource block pair are assigned to one out of a plurality of eREGs. According to the mapping, the REs are sequentially assigned to the eREGs, in predetermined orders. Within an OFDM symbol a pair of REs is assigned to the same eREG, wherein the two REs are spaced apart from each other by 3 or 6 subcarriers.
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