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    Channel state information feedback and receiving method and device
    3.
    发明授权
    Channel state information feedback and receiving method and device 有权

    公开(公告)号：US10396875B2

    公开(公告)日：2019-08-27

    申请号：US15749122

    申请日：2016-07-21

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Wenhong Chen ,  Shanzhi Chen ,  Qiubin Gao ,  Runhua Chen ,  Tamrakar Rakesh ,  Hui Li

    IPC: H04W24/10 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

    Abstract: The present application provides a channel state information (CSI) feedback and receiving method and device. The CSI feedback method by a UE comprises: determining, according to an indication of a base station, at least one CSI feedback configuration group configured by the base station, wherein each CSI feedback configuration group comprises at least one CSI feedback configuration; and upon determination of a need to report CSI, reporting, via a PUCCH or PUSCH, to the base station CSI acquired based on a first CSI feedback configuration, wherein the first CSI feedback configuration is a CSI feedback configuration determined, according to location information of a CSI feedback configuration in the most recent report or location information of a CSI feedback configuration indicated by the base station, from a corresponding CSI feedback configuration group by the UE. The present application supports independent reporting of location information and corresponding CSI, thus improving the detection performance of such information, and further supports a base station to acquire CSI corresponding to a specified CSI feedback configuration, thus enabling more flexible downlink scheduling and transmission.

    Data reception method, data transmission method and data reception device for device-to-device communication
    4.
    发明授权
    Data reception method, data transmission method and data reception device for device-to-device communication 有权

    公开(公告)号：US10327229B2

    公开(公告)日：2019-06-18

    申请号：US15327617

    申请日：2015-08-05

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Rui Zhao ,  Qiubin Gao ,  Wenhong Chen ,  Ying Peng

    IPC: H04W72/04 ,  H04L5/00 ,  H04W76/14

    Abstract: The present disclosure provides a data reception method, a data transmission method, a data reception device and a data transmission device for device-to-device (D2D) communication, so as to enable a UE to receive data from a transmitting UE in the case that the UE does not know resource pool configuration information of the transmitting UE. The data reception method includes steps of: detecting control information from a transmitter using each set of locally-stored resource pool configuration information; determining resource pool configuration information used by the transmitter in accordance with the detected control information; and receiving data information from the transmitter in accordance with the determined resource pool configuration information and the control information.

    Channel state information feedback and acquisition method and device
    5.
    发明授权
    Channel state information feedback and acquisition method and device 有权

    公开(公告)号：US10305569B2

    公开(公告)日：2019-05-28

    申请号：US15563464

    申请日：2016-02-03

    Applicant: China Academy of Telecommunications Technology

    Inventor： Hui Li ,  Qiubin Gao ,  Runhua Chen ,  Tamrakar Rakesh ,  Wenhong Chen

    IPC: H04B7/06 ,  H04W24/10 ,  H04L1/00 ,  H04B7/0456

    Abstract: Disclosed are a channel state information feedback and acquisition method and device. The application comprises: acquiring, by a terminal, a first-dimension downlink reference signal resource, S second-dimension downlink reference signal resources and a first corresponding relationship of the above configured by a network device; measuring, by the terminal and according to the first-dimension downlink reference signal resource, a first-dimension downlink reference signal, and selecting, by the terminal and according to the measured first-dimension PMI and the first corresponding relationship, a resource for measuring a second-dimension downlink reference signal, measuring, according to the resource, the second-dimension downlink reference signal, and feeding back channel state information, wherein the second-dimension reference signal is transmitted after forming a first-dimension beamforming weight. The present application enables acquisition of channel state information between a network device and a terminal, and adjustment of the first-dimension beamforming weight for forming the second-dimension reference signal according to the PMI fed back by the first-dimension.

    D2D communication method and device
    6.
    发明授权
    D2D communication method and device 有权

    公开(公告)号：US10051623B2

    公开(公告)日：2018-08-14

    申请号：US15111915

    申请日：2015-01-14

    Applicant: China Academy of Telecommunications Technology

    Inventor： Rui Zhao ,  Qiubin Gao ,  Wenhong Chen ,  Ying Peng

    IPC: H04W72/04 ,  H04W74/02 ,  H04W72/02 ,  H04W72/08 ,  H04W72/10 ,  H04W74/00 ,  H04W74/08 ,  H04W84/18 ,  H04W88/04

    Abstract: Disclosed are a D2D communication method and device. The method comprises: transmitting, by a transmitting-end device, a control message in a control region of a current communication frame, the control message at least comprising resource indication information, and monitoring control messages, at least comprising the resource indication information, of other transmitting-end devices in the control region of the current communication frame, the resource indication information being used for indicating a data channel in a data region of the current communication frame occupied by the transmitting-end device; and according to the monitored resource indication information, transmitting D2D data on the data channel occupied thereby. In the technical solution provided in the embodiments of the present invention, the communication frame for D2D communications comprises a control region and a data region, wherein the data region further comprises a plurality of data channels. By way of mutually monitoring a control message of a control region by different transmitting-end devices, the resource conflict caused by competition can be avoided.

    Channel state information feedback method and device
    7.
    发明授权
    Channel state information feedback method and device 有权

    公开(公告)号：US11329708B2

    公开(公告)日：2022-05-10

    申请号：US16081878

    申请日：2017-02-21

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Hui Li ,  Qiubin Gao ,  Runhua Chen ,  Wenhong Chen ,  Rakesh Tamrakar

    IPC: H04B7/06 ,  H04B7/0456

    Abstract: A CSI feedback method and a CSI feedback device are provided. The CSI feedback method includes: determining a first precoding matrix in a set of first precoding matrices, and determining a first precoding matrix index value corresponding to the first precoding matrix; determining a second precoding matrix in a set of second precoding matrices, and determining a second precoding matrix index value corresponding to the second precoding matrix, the second precoding matrix including a beam selection section for selecting beams from the beam groups for each antenna group and a phase adjustment section for adjusting phases among the plurality of antenna groups; and feeding back the first precoding matrix index value and the second precoding matrix index value to an access device, so as to enable the access device to select corresponding precoding matrices from the set of first precoding matrices and the set of second precoding matrix in accordance with the first precoding matrix index value and the second precoding matrix index value, and implement calculation on the selected precoding matrices to obtain a precoding matrix for data transmission.

    CSI feedback method, precoding method, and apparatus
    8.
    发明授权
    CSI feedback method, precoding method, and apparatus 有权

    公开(公告)号：US10742292B2

    公开(公告)日：2020-08-11

    申请号：US16084218

    申请日：2017-02-24

    Applicant: China Academy of Telecommunications Technology

    Inventor： Wenhong Chen ,  Qiubin Gao ,  Hui Li ,  Runhua Chen ,  Tamrakar Rakesh

    IPC: H04W4/00 ,  H04B7/06 ,  H04B7/0456 ,  H04W72/04

    Abstract: Disclosed are a channel state information (CSI) feedback method, a precoding method, and an apparatus. In the present invention, a terminal obtains, according to the number of downlink transport layers, a first precoding matrix set that is located on a first subband and that is corresponding to the number of the downlink transport layers, the first precoding matrix set comprising one or more precoding matrices, and a physical resource in the first subband being corresponding to a precoding matrix in the first precoding matrix set; the terminal determines a channel quality indicator (CQI) on a second subband according to downlink channel information and the first precoding matrix set on the first subband; and the terminal feeds back the CSI, the CSI comprising one or more of the following information: an RI used for indicating the number of the downlink transport layers, a PMI used for indicating the first precoding matrix set on the first subband and the CQI on the second subband. The technical solution disclosed in the resent invention can reduce signaling overheads of feeding back CSI by a terminal.

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