公开(公告)号：US09602180B2

公开(公告)日：2017-03-21

申请号：US14837421

申请日：2015-08-27

Applicant: FUJITSU LIMITED

Inventor： Lei Song ,  Yi Zhang ,  Chenxi Zhu ,  Hua Zhou ,  Jian Zhang

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0469 ,  H04B7/0478 ,  H04B7/0634 ,  H04B7/0639

Abstract: A method for determining a codebook, information feedback method and devices thereof. For precoding of a differential dual codebook, the method includes: providing N1 codewords in a second codebook, so that complex codewords obtained by a product of codewords in the second codebook and a first codebook satisfy corresponding antenna configuration(s), where, N1 is greater than or equal to 16. Or for precoding of a GoB dual codebook, the method includes: codewords in a first codebook being: W 1 = ( X 0 0 Y ) = ( X 0 0 D 1 ⁢ XD 2 ) ; where, D1 and D2 are respectively unitary diagonal matrixes for respectively weighting elements at each row and each column of a matrix X, X containing Nb column vectors, and Nb denotes the number of beams contained in the codewords of the first codebook. The embodiments of the present disclosure are applicable to various antenna configuration.

公开(公告)号：US09313785B2

公开(公告)日：2016-04-12

申请号：US14066145

申请日：2013-10-29

Applicant: FUJITSU LIMITED

Inventor： Yi Zhang ,  Hua Zhou ,  Yuantao Zhang ,  Jianming Wu

IPC: H04W72/04 ,  H04W8/26 ,  H04W84/08 ,  H04W84/18 ,  H04W76/00 ,  H04W64/00 ,  H04W88/08

CPC classification number: H04W72/044 ,  H04W8/26 ,  H04W64/003 ,  H04W76/45 ,  H04W84/08 ,  H04W84/18 ,  H04W88/085

Abstract: A cell identifier allocation apparatus and method, a base station, a readable program and a medium including acquiring location information of a macro base station and location information of each of a plurality of remote transmitting apparatuses connected to the macro base station; determining relative distances between the plurality of remote transmitting apparatuses and relative distances between the macro base station and each of the plurality of remote transmitting apparatuses; classifying the macro base station and the plurality of remote transmitting apparatuses into a plurality of sets, according to the relative distances between the plurality of remote transmitting apparatuses and the relative distances between the macro base station and each of the plurality of remote transmitting apparatuses; allocating cell identifiers to the plurality of remote transmitting apparatuses; and generating information to be transmitted to corresponding remote transmitting apparatus according to the allocated cell identifier.

Abstract translation: 小区标识符分配装置和方法，基站，可读程序和介质，包括获取宏基站的位置信息和连接到宏基站的多个远程发送装置中的每一个的位置信息; 确定所述多个远程发送装置之间的相对距离与所述宏基站与所述多个远程发送装置中的每一个之间的相对距离; 根据多个远程发送装置之间的相对距离和宏基站与多个远程发送装置中的每一个之间的相对距离，将宏基站和多个远程发送装置分类成多个集合; 向所述多个远程发送装置分配小区标识符; 以及根据所分配的小区标识符生成要发送到相应的远程发送装置的信息。

公开(公告)号：US09287955B2

公开(公告)日：2016-03-15

申请号：US14090466

申请日：2013-11-26

Applicant: FUJITSU LIMITED

Inventor： Yi Zhang ,  Hua Zhou ,  Jianming Wu ,  Aihuang Guo ,  Wei Luo

IPC: H04B7/06 ,  H04W72/08 ,  H04B7/04

CPC classification number: H04B7/0617 ,  H04B7/0452 ,  H04B7/0456 ,  H04W72/082

Abstract: The present invention relates to a multi-user multi-stream beamforming method and apparatus, and a base station. The multi-user multi-stream beamforming method includes the steps of: a) calculating a beamforming matrix of each user in the multi-user according to a minimum leakage principle; b) determining a user average Signal to Leakage Noise Ratio (SLNR) of the multi-user according to the beamforming matrix of each user; c) determining whether the user average SLNR is stable, and if the user average SLNR is not stable, returning to step a) to recalculate the beamforming matrix of each user by using the calculated beamforming matrix of each user.

Abstract translation: 本发明涉及多用户多流波束成形方法和装置以及基站。 多用户多流波束成形方法包括以下步骤：a）根据最小泄漏原理计算多用户中每个用户的波束成形矩阵; b）根据每个用户的波束成形矩阵确定多用户的用户平均信噪比（SLNR）; c）确定用户平均SLNR是否稳定，并且如果用户平均SLNR不稳定，则返回到步骤a），通过使用每个用户的计算的波束形成矩阵来重新计算每个用户的波束成形矩阵。

公开(公告)号：US09232508B2

公开(公告)日：2016-01-05

申请号：US13847639

申请日：2013-03-20

Applicant: FUJITSU LIMITED

Inventor： Yuantao Zhang ,  Yi Zhang ,  Yuanrong Lan ,  Hua Zhou ,  Jianming Wu

IPC: H04W72/04 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14

CPC classification number: H04L1/1861 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/1469 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1289 ,  H04W76/28

Abstract: A method for transmitting uplink response signals, base station, mobile station and communication system, includes judging whether to use a downlink secondary component carrier to transmit data to a mobile station; if the judging result is positive, allocating resources according to the number of transmission blocks for transmitting the downlink data in the secondary component carrier, accordingly the mobile station is able to use the resources corresponding to a preconfigured primary component carrier and the resources allocated to the secondary component carrier to select uplink resources for transmitting response signals.

Abstract translation: 一种用于发送上行响应信号，基站，移动台和通信系统的方法，包括：判断是否使用下行链路次要分量载波向移动台发送数据; 如果判断结果为肯定，则根据用于在次要分量载波中发送下行链路数据的传输块的数量分配资源，因此移动台能够使用与预配置的主分量载波相对应的资源和分配给 次要分量载波来选择用于发送响应信号的上行链路资源。

公开(公告)号：US20150327223A1

公开(公告)日：2015-11-12

申请号：US14801996

申请日：2015-07-17

Applicant: FUJITSU LIMITED

Inventor： Jian Zhang ,  Yi Wang ,  Yi Zhang ,  Hua Zhou

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00 ,  H04W48/16 ,  H04W48/12

CPC classification number: H04W72/042 ,  H04J11/0086 ,  H04L5/001 ,  H04W48/12 ,  H04W48/16

Abstract: A method for determining a search space, method for detecting downlink control information and apparatuses thereof. The method for determining a search space includes: determining eCCEs occupied by ePDCCH candidates in each carrier according to a first offset, a second offset and other related parameters; wherein the first offset denotes an offset of adjusting the eCCEs occupied by ePDCCH candidates in the same carrier in different eREG groups, and the second offset denotes an offset used for coordinating collision occurs among the eCCEs occupied by ePDCCH candidates in different carriers. In a case of cross-carrier, in configuring a search space, the first offset and the second offset are introduced to avoid collision between the ePDCCHs of the CCs as possible and avoid the ePDCCH candidates in each of the CCs from falling into the same eREG group as possible, thereby solving the problems in the prior art.

Abstract translation: 一种用于确定搜索空间的方法，用于检测下行链路控制信息的方法及其装置。 用于确定搜索空间的方法包括：根据第一偏移量，第二偏移量和其他相关参数来确定每个载波中的ePDCCH候选者所占用的eCCE; 其中，所述第一偏移量表示在不同的eREG组中调整所述同一载波中的ePDCCH候选所占用的eCCE的偏移量，并且所述第二偏移量表示在不同载波中由ePDCCH候选者占用的eCCE之间发生的用于协调冲突的偏移量。 在跨载波的情况下，在配置搜索空间时，引入第一偏移和第二偏移以避免CC的ePDCCH之间的冲突，并避免每个CC中的ePDCCH候选落入相同的eREG 可以解决现有技术中的问题。

公开(公告)号：US11477657B2

公开(公告)日：2022-10-18

申请号：US16732898

申请日：2020-01-02

Applicant: FUJITSU LIMITED

Inventor： Lei Song ,  Hongchao Li ,  Yi Zhang ,  Hua Zhou

IPC: H04W16/10 ,  H01Q1/24 ,  H01Q21/06 ,  H01Q21/24 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/0413 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: A base station including: a controller configured to configure a plurality of configuration information, each of the plurality of configuration information includes resource configuration information, a number of antenna ports, and power control information; and a transmitter configured to transmit to terminal a control signal including the plurality of configuration information, wherein, the transmitter transmits to terminal an indication information that indicates configuration information to be used for measurement among the plurality of the configuration information.

公开(公告)号：US09961677B2

公开(公告)日：2018-05-01

申请号：US14801996

申请日：2015-07-17

Applicant: FUJITSU LIMITED

Inventor： Jian Zhang ,  Yi Wang ,  Yi Zhang ,  Hua Zhou

IPC: H04W72/04 ,  H04L5/00 ,  H04J11/00 ,  H04W48/12 ,  H04W48/16

CPC classification number: H04W72/042 ,  H04J11/0086 ,  H04L5/001 ,  H04W48/12 ,  H04W48/16

Abstract: A method for determining a search space, method for detecting downlink control information and apparatuses thereof. The method for determining a search space includes: determining eCCEs occupied by ePDCCH candidates in each carrier according to a first offset, a second offset and other related parameters; wherein the first offset denotes an offset of adjusting the eCCEs occupied by ePDCCH candidates in the same carrier in different eREG groups, and the second offset denotes an offset used for coordinating collision occurs among the eCCEs occupied by ePDCCH candidates in different carriers. In a case of cross-carrier, in configuring a search space, the first offset and the second offset are introduced to avoid collision between the ePDCCHs of the CCs as possible and avoid the ePDCCH candidates in each of the CCs from falling into the same eREG group as possible, thereby solving the problems in the prior art.

公开(公告)号：US09893845B2

公开(公告)日：2018-02-13

申请号：US15387169

申请日：2016-12-21

Applicant: FUJITSU LIMITED

Inventor： Yuantao Zhang ,  Yi Zhang ,  Yuanrong Lan ,  Hua Zhou ,  Jianming Wu

IPC: H04L1/18 ,  H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04W76/04 ,  H04L5/14

CPC classification number: H04L1/1861 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/1469 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1289 ,  H04W76/28

Abstract: A user equipment (UE), including: a receiver configured to receive downlink data transmitted by a base station via downlink component carriers including a secondary component carrier; and a circuit configured to select uplink resources from available resources for transmitting response signals obtained by decoding the received downlink data and select corresponding modulation symbols by using a mapping relation between a state of the response signals and the selected resources and the modulation symbols according to the state of the response signals; wherein the available resources include resources corresponding to a primary component carrier and resources allocated to the secondary component carrier by the base station; and, wherein the mapping relation includes cases in which the resource corresponding to the response signal that is NACK/DTX is not selected; where NACK represents Negative Acknowledgement, and DTX represents Discontinuous Transmission; and when the response signals are all DTX, no resource is selected.

公开(公告)号：US09521666B2

公开(公告)日：2016-12-13

申请号：US14573479

申请日：2014-12-17

Applicant: FUJITSU LIMITED

Inventor： Yi Zhang ,  Yi Wang ,  Jian Zhang ,  Hua Zhou ,  Jianming Wu

IPC: H04B7/02 ,  H04W72/04 ,  H04W24/10 ,  H04L1/00 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04B7/024 ,  H04B7/0647 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0057 ,  H04W24/10

Abstract: Embodiments of the present invention provide a method and apparatus for triggering aperiodic feedback in coordinated multipoint transmission. The method includes: transmitting, by an eNB to UE, dynamic control information (DCI) and preconfigured feedback sets corresponding to the DCI, so that the UE aperiodically feeds back corresponding channel state information (CSI) according to the DCI and the feedback sets corresponding to the DCI; wherein the preconfigured feedback sets corresponding to the DCI are classified according to a triggered transmitting point or a CSI-RS of non-zero power, or are classified according to configured CSI, or are classified according to an interference type. With the method and apparatus of the embodiments of the present invention, a relatively good tradeoff between flexibility of aperiodic CSI feedback and signaling load in a CoMP transmission process or a joint transmission process of CoMP and CA may be achieved.

Abstract translation: 本发明的实施例提供了一种用于在协调多点传输中触发非周期反馈的方法和装置。 该方法包括：由eNB向UE发送对应于DCI的动态控制信息（DCI）和预配置的反馈集合，使得UE根据DCI和相应的反馈集合非周期地反馈对应的信道状态信息（CSI） 给DCI; 其中对应于DCI的预配置反馈集合根据触发的发送点或非零功率的CSI-RS进行分类，或根据配置的CSI进行分类，或根据干扰类型进行分类。 利用本发明的实施例的方法和装置，可以实现在CoMP传输过程中的非周期性CSI反馈的灵活性与CoMP传输过程中的信令负载或CoMP和CA的联合传输过程之间相对较好的权衡。

公开(公告)号：US09467981B2

公开(公告)日：2016-10-11

申请号：US14159019

申请日：2014-01-20

Applicant: FUJITSU LIMITED

Inventor： Yuantao Zhang ,  Yi Wang ,  Yi Zhang ,  Hua Zhou

IPC: H04W72/04 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04W72/12

CPC classification number: H04W72/1289 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0689 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0094 ,  H04W72/0406 ,  H04W88/085

Abstract: A method and apparatus for transmitting control signaling includes: transmitting indication information on a transmission location of control signaling by a base station to a mobile station configured as an open-loop MIMO transmission mode; transmitting the control signaling by the base station in a data region by using the open-loop MIMO transmission mode or a transmit diversity transmission mode if the location for transmitting the control signaling indicated by the information on a transmission location of control signaling is located at the data region. Whereby the number of mobile stations to be scheduled in a cell is increased and results in the scheduling information to be transmitted in a subframe increased, the control signaling of a mobile station configured as an open-loop MIMO transmission mode is placed in a data region for transmission, thereby increasing the number of UE scheduled, increasing the throughput of the system.

Abstract translation: 用于发送控制信令的方法和装置包括：将基站的控制信令的发送位置的指示信息发送到配置为开环MIMO传输模式的移动台; 如果用于发送由控制信令的传输位置的信息指示的控制信令的位置位于所述控制信令的位置处，则通过使用开环MIMO传输模式或发射分集传输模式，在数据区域中发送基站的控制信令 数据区。 由此，在小区中要调度的移动站的数量增加并且使得在子帧中要发送的调度信息增加，被配置为开环MIMO传输模式的移动站的控制信令被放置在数据区 用于传输，从而增加了UE调度的数量，增加了系统的吞吐量。