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公开(公告)号：US11005543B2
公开(公告)日：2021-05-11
申请号：US14383021
申请日：2013-03-08
Inventor： Tadashi Yoshida , Ayako Horiuchi , Takashi Iwai , Yoshihiko Ogawa , Akihiko Nishio
Abstract: This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).
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公开(公告)号：US10455523B2
公开(公告)日：2019-10-22
申请号：US14368766
申请日：2013-01-16
Inventor： Akihiko Nishio , Hidetoshi Suzuki
Abstract: The present invention prevents an increased error rate, degradation of reception-quality estimation precision, and complication of control in an operation for independently controlling, for individual component carriers (CC), transmission timing of an uplink subframe. When a radio communication terminal device independently controls the subframe transmission timing for individual CCs, and a portion of the total transmission power where overlap exists between the trailing-end portion of a subframe of a CC and a leading-end portion of a subframe of another CC exceeds a tolerance, the terminal device controls the timing such that the transmission power of a symbol including the overlapping portion is reduced.
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公开(公告)号：US09882670B2
公开(公告)日：2018-01-30
申请号：US14433576
申请日：2013-09-25
Inventor： Toru Oizumi , Akihiko Nishio
CPC classification number: H04J11/003 , H04J3/1694 , H04L1/1861 , H04L5/0055 , H04L5/0073 , H04L5/14 , H04L5/1469 , H04W72/042 , H04W72/0446 , H04W72/082
Abstract: Provided is a terminal that is capable of avoiding a PHICH resource conflict where terminals having different UL-DL configurations coexist. When a response signal transmitted in a first sub-frame is in response to uplink data transmitted in a second sub-frame of a first configuration pattern, and a response signal transmitted in the first sub-frame is in response to uplink data transmitted in a third sub-frame of a second configuration pattern that is set on another terminal for which the configuration pattern setting cannot be changed, a first resource to be allocated to the response signal in the first sub-frame that is transmitted in response to the uplink data transmitted in the second sub-frame from the terminal; is different from a second resource to be allocated to the response signal in the third sub-frame that is transmitted in response to the uplink data transmitted from the another terminal.
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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：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：US20160205674A1
公开(公告)日：2016-07-14
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.
Abstract translation: 提供了使用该方法加扰信号，传输点设备和用户设备的方法。 该方法包括：通过更高层信令向用户设备发送ID表，该ID表是整个ID空间的子集，并且包含用户设备的可用ID; 通过物理层信令或UE特定的较高层信令通知用户设备将要使用的ID表中的ID; 基于通知的ID生成随机种子; 通过随机种子初始化加扰序列; 并用初始化的加扰序列对信号进行加扰。 通过组合物理层信令和较高层信令，本发明的方法可以将所使用的组ID和盲检测空间通知给UE，其中，UE的盲检测被启用，并且信令开销降低。
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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：US20160135150A1
公开(公告)日：2016-05-12
申请号：US14996183
申请日：2016-01-14
Inventor： Akihiko Nishio , Seigo Nakao
IPC: H04W72/04
CPC classification number: H04W72/0406 , H04L5/00 , H04L5/0007 , H04L5/0053 , H04L5/0055 , H04W72/04 , H04W72/0413 , H04W72/042
Abstract: A wireless communication base station apparatus that allows the number of times of blind decodings at a mobile station to be reduced without increasing the overhead caused by notifying information. In this apparatus, a CCE allocation part allocates allocation information allocated to a PDCCH received from modulation parts to a particular one of a plurality of search spaces that is corresponding to a CCE aggregation size of the PDCCH. A placement part then places the allocation information in one of downstream line resources, reserved for the PDCCH, that is corresponding to the CCE of the particular search space to which the allocation information has been allocated. A radio transmission part then transmits an OFDM symbol, in which the allocation information has been placed, to the mobile station from an antenna.
Abstract translation: 能够减少移动台的盲解码次数的无线通信基站装置，而不会增加由通知信息引起的开销。 在该装置中，CCE分配部将从调制部接收的PDCCH分配给与PDCCH的CCE聚合大小对应的多个搜索空间中的特定一个的分配信息。 然后，放置部分将分配信息放置在与PDCCH分配的特定搜索空间的CCE相对应的下行线路资源中，该分配信息被分配给分配信息。 然后，无线发送部从天线向移动台发送其中已分配信息的OFDM符号。
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公开(公告)号：US09338765B2
公开(公告)日：2016-05-10
申请号：US14237819
申请日：2013-06-11
Inventor： Toru Oizumi , Akihiko Nishio
IPC: H04W4/00 , H04W72/04 , H04L1/00 , H04L5/00 , H04W28/14 , H04W88/02 , H04W52/02 , H04L1/18 , H04L5/14 , H04W72/12
CPC classification number: H04W72/0406 , H04L1/00 , H04L1/1657 , H04L1/1816 , H04L1/1819 , H04L1/1822 , H04L1/1835 , H04L1/1854 , H04L5/001 , H04L5/0023 , H04L5/0041 , H04L5/0055 , H04L5/0073 , H04L5/0094 , H04L5/1469 , H04W28/14 , H04W52/0206 , H04W72/04 , H04W72/1257 , H04W88/02 , Y02D70/1262 , Y02D70/1264 , Y02D70/25
Abstract: Disclosed is a terminal apparatus in which: a decoding section (210) that stores, in a retransmission buffer, downlink data transmitted by each of the plurality of component carriers and decodes the downlink data; and a radio transmitting section (222) that transmits, using a first component carrier of the plurality of component carriers, a response signal for first downlink data received using the first component carrier and a response signal for second downlink data received using a second component carrier of the plurality of component carriers. In addition, a second buffer is divided into regions respectively corresponding to retransmission processes based on a specific value determined by a combination of a first configuration pattern that is set in the first component carrier and a second configuration pattern that is set in the second component carrier.
Abstract translation: 公开了一种终端装置，其中，解码部（210）在重发缓冲器中存储由所述多个分量载波中的每一个发送的下行链路数据，并对所述下行数据进行解码; 以及无线发送部（222），其使用所述多个分量载波的第一分量载波来发送用于使用所述第一分量载波接收的第一下行链路数据的响应信号和使用第二分量载波接收的第二下行链路数据的响应信号 的多个分量载波。 此外，第二缓冲器被分成对应于重发过程的区域，所述区域基于由在第一分量载波中设置的第一配置模式和设置在第二分量载波中的第二配置模式的组合确定的特定值 。
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公开(公告)号：US09331753B2
公开(公告)日：2016-05-03
申请号：US14639466
申请日：2015-03-05
Inventor： Takashi Iwai , Akihiko Nishio , Yoshihiko Ogawa , Seigo Nakao , Masayuki Hoshino
CPC classification number: H04L5/0048 , H04B7/024 , H04B7/0452 , H04J11/0023 , H04J11/0026 , H04J11/0053 , H04J11/0056 , H04J13/0062 , H04L5/0032 , H04L5/0035 , H04L23/02 , H04L27/2613 , H04L47/34
Abstract: Provided are a radio communication terminal apparatus and a radio transmission method by which intersymbol interference of DM-RS of a CoMP terminal and a Non-CoMP terminal can be reduced. A CoMP set setting unit (102) sets the cell IDs of all cells in the CoMP set in a cell selection unit (104), and a serving cell setting unit (103) sets the cell ID of the serving cell in the cell selection unit (104). The cell selection unit (104) selects the cell ID having a number closest to the cell ID of the serving cell from the cells in the CoMP set. A sequence information calculation unit (106) derives a sequence group number from the selected cell ID, and the sequence information calculation unit (106) calculates a sequence number from the derived sequence group number and a transmission bandwidth of the DM-RS.
