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公开(公告)号：US12052120B2
公开(公告)日：2024-07-30
申请号：US18354418
申请日：2023-07-18
Inventor： Yutaka Murakami , Yasuaki Yuda
CPC classification number: H04L25/0224 , H04L5/0048 , H04L27/2657 , H04L27/2666
Abstract: A reception apparatus according to the present disclosure includes a receiver which, in operation, receives a downlink signal including a first data signal for the reception apparatus and first Reference Signals for Phase Tracking (PT-RS). The first data signal is mapped on a first set of subcarriers and the first PT-RS is mapped to the downlink signal based on a first Modulation and Coding Scheme (MCS) configured for the first data signal. The reception apparatus according also includes a circuit which, in operation, estimates a phase noise using the first PT-RS included in the downlink signal.
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公开(公告)号：US11792817B2
公开(公告)日：2023-10-17
申请号：US17513386
申请日：2021-10-28
Inventor： Ayako Horiuchi , Lilei Wang , Alexander Golitschek Edler von Elbwart , Masayuki Hoshino , Yasuaki Yuda
IPC: H04W72/23 , H04L1/00 , H04L5/00 , H04W72/20 , H04L1/1812 , H04W72/0446
CPC classification number: H04W72/23 , H04L1/00 , H04L1/0003 , H04L1/1812 , H04L5/0048 , H04L5/0055 , H04W72/0446 , H04W72/20
Abstract: A base station is disclosed that enables an efficient use of resources even when a TTI length is shortened. In this base station, a PDCCH section (103) generates one piece of downlink control information (DCI) containing control information for a plurality of first transmission time intervals (TTIs) each having a TTI length shorter than a second TTI, and a transmission section (107) transmits the DCI. Control information on retransmission processing for a data signal is configured for each of the plurality of first TTIs while control information other than the control information on the retransmission processing is configured in common among the plurality of first TTIs in the DCI.
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公开(公告)号：US11757679B2
公开(公告)日：2023-09-12
申请号：US17328852
申请日：2021-05-24
Inventor： Yutaka Murakami , Yasuaki Yuda
CPC classification number: H04L25/0224 , H04L5/0048 , H04L27/2657 , H04L27/2666
Abstract: A reception apparatus according to the present disclosure includes a receiver which, in operation, receives a downlink signal including a first data signal for the reception apparatus and first Reference Signals for Phase Tracking (PT-RS). The first data signal is mapped on a first set of subcarriers and the first PT-RS is mapped to the downlink signal based on a first Modulation and Coding Scheme (MCS) configured for the first data signal. The reception apparatus according also includes a circuit which, in operation, estimates a phase noise using the first PT-RS included in the downlink signal.
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公开(公告)号：US11153125B2
公开(公告)日：2021-10-19
申请号：US16476063
申请日：2018-01-29
Inventor： Yutaka Murakami , Yasuaki Yuda
Abstract: A transmission apparatus according to the present disclosure includes a plurality of user modulated signal generators. A user #k modulated signal generator (104_k) (where k=1 to n) generates a modulated signal including reference signals for phase noise estimation (PT-RS: Reference Signal for Phase Tracking), for a plurality of reception apparatuses. A wireless unit (109_A, 109_B) transmits the generated modulated signal. A correction coefficient of transmission power for the reference signals is associated with a pattern of a sequence used as the reference signals, on a one-to-one basis.
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公开(公告)号：US11129144B2
公开(公告)日：2021-09-21
申请号：US16870054
申请日：2020-05-08
Inventor： Masayuki Hoshino , Katsuhiko Hiramatsu , Yasuaki Yuda
Abstract: To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing the overhead of retransmission control signaling. In a case where a retransmission control method is employed in consideration of adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>2/3, two bits are set. In a case where the encoding rate 1/3
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Patent Agency Ranking
公开(公告)号：US09467882B2
公开(公告)日：2016-10-11
申请号：US14631694
申请日：2015-02-25
Inventor： Yasuaki Yuda , Seigo Nakao , Ayako Horiuchi , Akihiko Nishio , Daichi Imamura , Kenichi Miyoshi
CPC classification number: H04W72/005 , H04B17/318 , H04B17/345 , H04L5/0073 , H04W24/08 , H04W24/10 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/085
Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.
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公开(公告)号：US09370007B2
公开(公告)日：2016-06-14
申请号：US14457783
申请日：2014-08-12
Inventor： Yoshihiko Ogawa , Seigo Nakao , Daichi Imamura , Akihiko Nishio , Masayuki Hoshino , Katsuhiko Hiramatsu , Kenichi Miyoshi , Yasuaki Yuda , Sadaki Futagi , Takashi Iwai
CPC classification number: H04W72/0453 , H04L1/0042 , H04L1/0061 , H04L5/0023 , H04L5/0039 , H04L5/0048 , H04L25/0226 , H04L25/03159 , H04L27/2602
Abstract: Disclosed are a wireless communication base station device and a division number determination method that improve the frequency diversity effect while maintaining channel estimation accuracy regardless of the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. A determination unit determines the number of divisions in the frequency domain of a transmission signal from a wireless communication terminal device. Here, the determination unit increases the number of divisions in the frequency domain of the transmission signal from the wireless communication terminal device as the number of pilot blocks included in the transmission signal increases. In addition, a scheduling unit schedules allocation to the frequency resources of the divided transmission signal according to the number of divisions determined by the determination unit.
Abstract translation: 公开了一种无线通信基站装置和分割数确定方法，无论来自无线通信终端装置的发送信号的频域中的分割数如何，都可以在维持信道估计精度的同时提高频率分集效应。 确定单元确定来自无线通信终端设备的发送信号的频域中的分割数。 这里，确定单元随着发送信号中包括的导频块的数量的增加，增加来自无线通信终端装置的发送信号的频域的分割数。 此外，调度单元根据由确定单元确定的分割数来调度分配的发送信号的频率资源。
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公开(公告)号：US20160113005A1
公开(公告)日：2016-04-21
申请号：US14986030
申请日：2015-12-31
Inventor： Yasuaki Yuda , Seigo Nakao , Ayako Horiuchi , Akihiko Nishio , Daichi Imamura , Kenichi Miyoshi
IPC: H04W72/04 , H04B17/345 , H04W72/00 , H04B17/318
CPC classification number: H04W72/005 , H04B17/318 , H04B17/345 , H04L5/0073 , H04W24/08 , H04W24/10 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/085
Abstract: Provided is a radio communication terminal which is capable of measuring quality in communication with a handover destination with high accuracy. The radio communication terminal is capable of communicating with a base station or a relay node, and includes: a receiver which receives control information including information relating to measurement of measuring quality of a neighbor cell; an extractor which extracts information on a subframe where the measurement should be performed, which is a subframe where only transmission of a signal from the relay node connected to the base station is performed, from the information relating to the measurement; a measurement section which performs the measurement, on a subframe basis, based on the extracted information on the subframe where the measurement should be performed; and a transmitter which transmits a result of the measurement to the base station or the relay node.
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公开(公告)号：US09276706B2
公开(公告)日：2016-03-01
申请号：US14547893
申请日：2014-11-19
Inventor： Masayuki Hoshino , Katsuhiko Hiramatsu , Yasuaki Yuda
CPC classification number: H04W72/0406 , H04B1/16 , H04L1/0001 , H04L1/0003 , H04L1/08 , H04L1/1819 , H04L1/1887 , H04L1/1896 , H04W28/12 , H04W28/18
Abstract: To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing overhead of retransmission control signaling. Where a retransmission control method is employed with adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>2/3, two bits are set. In a case where the encoding rate 1/3
Abstract translation: 通过减少用于发送与重传控制有关的参数的资源并减少重传控制信令的开销来提高吞吐量。 在采用了可以改变编码速率的自适应MCS控制的重传控制方法的情况下，调度部根据通信对方装置通知的CQI来设定MCS。 当传输数据被编码时，RV参数位数设置部分设置用于使RV参数发信号的位数减少，因为第一传输的编码速率降低，并且基于比特数设置RV参数。 例如，在编码率R为R> 2/3的情况下，设定2比特。 在编码率1/3
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公开(公告)号：US09143969B2
公开(公告)日：2015-09-22
申请号：US14588712
申请日：2015-01-02
Inventor： Atsushi Sumasu , Daichi Imamura , Ayako Horiuchi , Yasuaki Yuda
CPC classification number: H04W52/0216 , H04B17/309 , H04J11/005 , H04J11/0053 , H04J11/0056 , H04L5/0007 , H04L5/005 , H04L12/18 , H04L12/189 , H04L27/12 , H04L27/2611 , H04W24/08 , H04W52/0206 , H04W72/005 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/25
Abstract: The transmission of a reference signal, such as a CSI-RS, is enabled while maintaining a power saving effect when performing inter-cell cooperative transmission/reception or the like in a plurality of cells. In order to realize inter-cell cooperative transmission/reception, a CSI-RS which is used for estimating the state of a spatial propagation path of a communication line is generated by a CSI-RS generation unit, and the CSI-RS is disposed in a predetermined subframe by a disposition unit and transmitted. At this time, when a frame has ten subframes #0 to #9, the CSI-RS is disposed in the subframes #4 and #9, which are subframes excluding the subframes #0 and #5 incapable of transmitting a CSI-RS and are subframes other than subframes capable of acting as MBSFN subframes when discontinuous communication (Extended Cell DTX) is performed so as to achieve power saving, and transmitted.
Abstract translation: 在多个小区中执行小区间协作发送/接收等时，能够保持诸如CSI-RS的参考信号的发送，同时保持省电效果。 为了实现小区间协作发送接收，通过CSI-RS生成单元生成用于估计通信线路的空间传播路径的状态的CSI-RS，将CSI-RS配置在 预定的子帧由配置单元发送。 此时，当帧具有十个子帧＃0至＃9时，CSI-RS被布置在子帧＃4和＃9中，子帧＃不是不能发送CSI-RS的子帧＃0和＃5的子帧， 是在执行不连续通信（扩展小区DTX）时能够作为MBSFN子帧的子帧之外的子帧，以实现省电并被发送。
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