公开(公告)号：US20230052566A1

公开(公告)日：2023-02-16

申请号：US17979053

申请日：2022-11-02

Applicant: FUJITSU LIMITED

Inventor： Yoshiaki OHTA ,  YOSHIHIRO KAWASAKI ,  Takayoshi ODE ,  Jianming WU

IPC: H04W76/20

Abstract: A base station includes a memory and a processor coupled to the memory and configured to transmit, when a state transition of a mobile station is performed, a first control signal to the mobile station, and perform control to simultaneously transmit the first control signal and a second control signal different from the first control signal to the mobile station when a first state transition, which causes a state of the mobile station to transfer from a first state to a second state, is performed, and then a second state transition, which causes the state of the mobile station to transfer from the second state to a third state, is performed.

公开(公告)号：US20200163088A1

公开(公告)日：2020-05-21

申请号：US16773070

申请日：2020-01-27

Applicant: FUJITSU LIMITED

Inventor： Pengyu JI ,  Jianming WU ,  XIN WANG

IPC: H04W72/04 ,  H04L1/16

Abstract: A resource indication method and apparatus and a communication system. The method includes: determining indication information, the indication information is used to indicate a second uplink resource in a second uplink frequency resource segment; wherein, the second uplink frequency resource segment or the second downlink frequency resource segment includes a second downlink predetermined number of second downlink resource block groups; and transmitting the first indication information to the UE in a first downlink frequency resource segment; wherein, the first downlink frequency resource segment or the first uplink frequency resource segment to which the first downlink frequency resource segment corresponds includes a first predetermined number of first uplink resource block groups, the first predetermined number being unequal to the second predetermined number; and wherein, the first indication information is bitmap information, a bit number of the bitmap information is determined according to the first predetermined number.

公开(公告)号：US20200053698A1

公开(公告)日：2020-02-13

申请号：US16660369

申请日：2019-10-22

Applicant: FUJITSU LIMITED

Inventor： Hongyang CHEN ,  Jianming WU ,  Tsuyoshi SHIMOMURA

IPC: H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04L27/26

Abstract: A base station device includes: a receiver that receives an allocation request that requests allocation of a radio resource that is used to transmit first data; a scheduler that allocates, to the first data when the allocation request is received by the receiver, a part of an uplink radio resource allocated to second data for which a larger delay than a delay allowed for the first data is allowed; and a transmitter that transmits an uplink indication signal indicating that the part of the uplink radio resource is allocated to the first data by the scheduler.

公开(公告)号：US20190223115A1

公开(公告)日：2019-07-18

申请号：US16366525

申请日：2019-03-27

Applicant: FUJITSU LIMITED

Inventor： Hongyang CHEN ,  Jianming WU ,  Tsuyoshi Shimomura

IPC: H04W52/34 ,  H04W76/15 ,  H04W76/27 ,  H04W72/04

Abstract: A terminal device includes a processor circuitry and a receiver. The processor circuitry is configured to perform dual connectivity with a cell group and a different cell group, and to control transmission power sharing between the cell group and the different cell group. The receiver is configured to receive a signal on the cell group and the different cell group.

公开(公告)号：US20180123669A1

公开(公告)日：2018-05-03

申请号：US15855335

申请日：2017-12-27

Applicant: FUJITSU LIMITED

Inventor： Wei XI ,  Hua ZHOU ,  Jianming WU

IPC: H04B7/06 ,  H04W72/12

CPC classification number: H04B7/0626 ,  H04B7/04 ,  H04B7/0632 ,  H04B7/0639 ,  H04W72/121

Abstract: Embodiments of this disclosure provide a method and apparatus for feeding back channel state information, a user pairing method and apparatus, a data transmitting method and apparatus and a system. In one embodiment, the apparatus for feeding back channel state information includes: a feedback unit configured to feed back channel state information to an eNB, the channel state information including a precoding matrix index (PMI); a first channel quality indicator (CQI1) corresponding to the PMI; and azimuth angle reference information. With a new CSI feedback mechanism of the embodiments of this disclosure, an eNB may avoid selecting UEs with a relatively large azimuth angle for pairing, and may only select or preferentially select UEs with a relatively small azimuth angle for pairing, thereby preventing loss of gains of beamforming of paired UEs, and improving performance of MUST transmission.

公开(公告)号：US20170288803A1

公开(公告)日：2017-10-05

申请号：US15626840

申请日：2017-06-19

Applicant: FUJITSU LIMITED

Inventor： Yi WANG ,  Hua ZHOU ,  Jianming WU

IPC: H04J13/00 ,  H04L5/00 ,  H04L27/26 ,  H04J13/12 ,  H04J13/18 ,  H04W72/04 ,  H04B7/0413

CPC classification number: H04J13/0048 ,  H04B7/0413 ,  H04J11/00 ,  H04J13/004 ,  H04J13/12 ,  H04J13/18 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0017 ,  H04L5/0048 ,  H04L27/2602 ,  H04L27/2613 ,  H04W72/0466 ,  H04W88/02 ,  H04W88/08

Abstract: A base station which performs Multiple Input Multiple Output (MIMO) transmission. A processor configured to generate reference signals by spreading with four groups of orthogonal code sequences, each group of orthogonal code sequences including four orthogonal sequences, wherein the orthogonal code sequences correspond to transmission layers and each of the orthogonal code sequences has a length of four, and a transmit circuit configured to transmit the reference signals. The four groups include a first group where the orthogonal code sequences are Walsh code sequences, a second group where the orthogonal code sequences are represented by mirroring of the orthogonal code sequences in the first group, a third group where the orthogonal code sequences are represented by cyclic shifts of the orthogonal code sequences in the first group, a fourth group where the orthogonal code sequences are represented by mirroring of the orthogonal code sequences in the third group.

公开(公告)号：US20170238289A1

公开(公告)日：2017-08-17

申请号：US15583419

申请日：2017-05-01

Applicant: FUJITSU LIMITED

Inventor： Yi ZHANG ,  Yi WANG ,  Jian ZHANG ,  Hua ZHOU ,  Jianming WU

IPC: H04W72/04 ,  H04L1/00 ,  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.

公开(公告)号：US20170156135A1

公开(公告)日：2017-06-01

申请号：US15402645

申请日：2017-01-10

Applicant: FUJITSU LIMITED

Inventor： Jianming WU

IPC: H04W72/04 ,  H04L1/18

CPC classification number: H04W72/0406 ,  H04L1/0025 ,  H04L1/1812 ,  H04L1/1861 ,  H04L1/1887 ,  H04L1/1896 ,  H04L5/0044 ,  H04L5/0053 ,  H04L2001/0097 ,  H04W36/023 ,  H04W36/18 ,  H04W72/044

Abstract: A digital communication system including a terminal and a plurality of base stations. The terminal includes receiving of a first control channel which is transmitted only from the first base station, the received first control channel is configured to indicate resource assignment for both data transmitted from the first base station and data coordinately transmitted from the second base station, and is configured to indicate new data or retransmission data. The terminal a second control channel including first control information and second control information only to the first base station. The first control information is channel state information, and the second control information is Hybrid Automatic Repeat reQuest (HARQ) acknowledgement information for the received data coordinately transmitted. The second control information is based on a result of the HARQ process of the received data coordinately transmitted, and the second control channel is transmitted only to the first base station.

公开(公告)号：US20150117380A1

公开(公告)日：2015-04-30

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: H04L5/00 ,  H04W24/10

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：US20140164002A1

公开(公告)日：2014-06-12

申请号：US14090451

申请日：2013-11-26

Applicant: FUJITSU LIMITED

Inventor： Lei ZHANG ,  Xin WANG ,  Hua ZHOU ,  Jianming WU ,  Xiaolei HAN ,  Xiaoqun ZHAO ,  Nan ZHANG ,  Tenglong FANG

IPC: G10L19/005

CPC classification number: G10L19/005 ,  H03M13/2957 ,  H03M13/6312

Abstract: A Joint Source-Channel Decoding (JSCD) apparatus, method, necessity judging method, and a receiver includes: a source coding rate change judging unit configured to judge whether a source coding rate of the current frame is the same as the previous frame; a source coding rate eligibility judging unit configured to judge whether the source coding rate of the current frame is less than a predetermined source coding rate threshold; a current frame SIR eligibility judging unit configured to judge whether an SIR of the current frame is lower than a predetermined SIR threshold, a necessity result determining unit configured to determine that a JSCD is necessary, when the source coding rate of the current frame is the same as the previous frame, the source coding rate of the current frame is less than the source coding rate threshold, and the SIR of the current frame is lower than the SIR threshold.

Abstract translation: 联合源信道解码（JSCD）装置，方法，必要性判断方法和接收机包括：源编码速率改变判断单元，用于判断当前帧的源编码率是否与前一帧相同; 源编码率合格判定单元，判断当前帧的源编码率是否小于规定的源编码率阈值; 当前帧SIR资格判断单元，被配置为判断当前帧的SIR是否低于预定的SIR阈值，当当前帧的源编码率为 与前一帧相同，当前帧的源编码率小于源编码率阈值，当前帧的SIR低于SIR阈值。