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    CSI FEEDBACK METHOD, PRECODING METHOD, AND APPARATUS
    1.
    发明申请
    CSI FEEDBACK METHOD, PRECODING METHOD, AND APPARATUS 审中-公开

    公开(公告)号：US20190074885A1

    公开(公告)日：2019-03-07

    申请号：US16084219

    申请日：2017-02-20

    Applicant: China Academy of Telecommunications Technology

    Inventor： Wenhong CHEN ,  Runhua CHEN ,  Qiubin GAO ,  Tamrakar RAKESH ,  Hui LI

    IPC: H04B7/06 ,  H04B7/0456

    Abstract: Disclosed are CSI feedback method, a precoding method, and an apparatus. In the present invention, after a terminal determines first precoding matrices on a first subband, the terminal obtains second precoding matrices corresponding to physical resources in the first subband according to the first precoding matrices and a column vector arrangement mode corresponding to the first precoding matrices; and then, the terminal determines CSI on a second subband according to the second precoding matrices. In the embodiment, precoding matrices are expanded according to a column vector arrangement mode, so as to obtain second precoding matrices corresponding to different physical resources; accordingly based on the second precoding matrices, CSI is measured by using the corresponding second precoding matrices on different physical resources. In the embodiment, precoding matrices are expanded according to a column vector arrangement mode, so that precoding can be performed on each data flow in transmission by using different column vectors, thereby improving the robustness of a transmission solution, and obtaining a stabler precoding gain.

    D2D COMMUNICATION METHOD AND DEVICE
    3.
    发明申请
    D2D COMMUNICATION METHOD AND DEVICE 审中-公开
    D2D通信方法和设备

    公开(公告)号：US20160345313A1

    公开(公告)日：2016-11-24

    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 ,  H04W72/02 ,  H04W72/10 ,  H04W72/08

    CPC classification number: H04W72/0446 ,  H04W72/02 ,  H04W72/0406 ,  H04W72/085 ,  H04W72/10 ,  H04W74/002 ,  H04W74/02 ,  H04W74/0816 ,  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.

    Abstract translation: 公开了一种D2D通信方法和设备。 该方法包括：通过发送端设备在当前通信帧的控制区域中发送控制消息，所述控制消息至少包括资源指示信息和至少包括资源指示信息的监视控制消息，所述控制消息至少包括资源指示信息 在当前通信帧的控制区域中的其他发送端设备，所述资源指示信息用于指示由所述发送端设备占用的当前通信帧的数据区域中的数据信道;并且根据所监视的资源指示 信息，在由此占用的数据信道上发送D2D数据。 在本发明实施例提供的技术方案中，用于D2D通信的通信帧包括控制区和数据区，其中数据区还包括多个数据信道。 通过相互监视不同发送端设备的控制区域的控制消息，可以避免竞争引起的资源冲突。

    METHOD AND APPARATUS FOR TRANSMITTING D2D SIGNALS
    4.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING D2D SIGNALS 有权
    用于发送D2D信号的方法和装置

    公开(公告)号：US20160270012A1

    公开(公告)日：2016-09-15

    申请号：US15031116

    申请日：2014-10-28

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Wenhong CHEN ,  Qiubin GAO ,  Ying PENG ,  Rui ZHAO

    IPC: H04W56/00 ,  H04B7/26

    CPC classification number: H04W56/003 ,  H04B7/26 ,  H04W56/002 ,  H04W56/0035 ,  H04W72/04 ,  H04W72/0406 ,  H04W76/10 ,  H04W76/14 ,  H04W92/18

    Abstract: Disclosed are a method and an apparatus for transmitting D2D signals, wherein the method comprises: detecting a synchronization signal and/or a D2D signal, and determining a synchronization reference for sending or receiving other D2D signals based on the synchronization signal and/or the D2D signal; based on information carried in the detected synchronization signal and/or the D2D signal, determining a D2D resource configuration; and based on the determined synchronization reference for sending or receiving the other D2D signals and the determined D2D resource configuration, determining a resource position used for transmitting D2D signals, and sending or receiving the other D2D signals in the resource position. By enabling a UE to learn the D2D resource configuration based on the synchronization signal and/or the D2D signal, the present application prevents the UE from always using fixed resources when transmitting D2D signals, thus reducing mutual interference and improving transmission efficiency and quality.

    Abstract translation: 公开了一种用于发送D2D信号的方法和装置，其中该方法包括：检测同步信号和/或D2D信号，以及基于同步信号和/或D2D确定用于发送或接收其它D2D信号的同步参考 信号; 基于检测到的同步信号和/或D2D信号中携带的信息，确定D2D资源配置; 并且基于所确定的用于发送或接收其他D2D信号的同步参考和所确定的D2D资源配置，确定用于发送D2D信号的资源位置，以及在资源位置发送或接收其他D2D信号。 通过使UE能够基于同步信号和/或D2D信号来学习D2D资源配置，本发明在发送D2D信号时防止UE始终使用固定资源，从而减少相互干扰并提高传输效率和质量。

    METHOD AND DEVICE FOR DETERMINING PDSCH TRANSMISSION RESOURCES
    5.
    发明申请
    METHOD AND DEVICE FOR DETERMINING PDSCH TRANSMISSION RESOURCES 审中-公开

    公开(公告)号：US20160248567A1

    公开(公告)日：2016-08-25

    申请号：US15141832

    申请日：2016-04-29

    Applicant: China Academy of Telecommunications Technology

    Inventor： Wenhong CHEN ,  Qiubin GAO ,  Ying PENG

    IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08

    CPC classification number: H04L5/0053 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/005 ,  H04W24/08 ,  H04W24/10 ,  H04W72/042 ,  H04W72/082

    Abstract: The present invention relates to the field of communications, and disclosed are a method and device for determining a PDSCH transmission resource. The method is: in the embodiments of the present invention, a network side determines a mapping relationship between a PDSCH transmission point and a zero-power CSI-RS for UE, and the UE does not receive a PDSCH over a zero-power CSI-RS resource which corresponds to a cell currently transmitting the PDSCH and measures an interference and still receives the PDSCH over a zero-power CSI-RS resource which corresponds to a cell not currently transmitting the PDSCH and measures an interference, thereby ensuring that the UE can accurately measure the interference and further improving the accuracy of CQI estimation; furthermore, the signalling overhead required for realizing the technical solution of the present invention is very small, only some RRC signalings are required, and a dynamic signaling can reuse a current signaling to the greatest extent, in this way, the compatibility of the system is effectively improved and the complexity of implementation is reduced.

    METHOD, NETWORK DEVICE, AND SYSTEM FOR TRANSMIT POWER CONTROL DURING DEVICE-TO-DEVICE COMMUNICATION
    6.
    发明申请
    METHOD, NETWORK DEVICE, AND SYSTEM FOR TRANSMIT POWER CONTROL DURING DEVICE-TO-DEVICE COMMUNICATION 有权
    方法，网络设备和用于设备到设备通信期间的发射功率控制的系统

    公开(公告)号：US20160037530A1

    公开(公告)日：2016-02-04

    申请号：US14782029

    申请日：2014-04-02

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Ying PENG ,  Qiubin GAO ,  Wenhong CHEN ,  Rui ZHAO

    IPC: H04W72/04 ,  H04W52/24 ,  H04W52/36 ,  H04B17/382 ,  H04W76/02 ,  H04B17/345 ,  H04W24/06 ,  H04W52/38 ,  H04W72/08

    CPC classification number: H04W72/0473 ,  H04B17/345 ,  H04B17/382 ,  H04W24/06 ,  H04W52/04 ,  H04W52/08 ,  H04W52/241 ,  H04W52/242 ,  H04W52/243 ,  H04W52/244 ,  H04W52/245 ,  H04W52/362 ,  H04W52/365 ,  H04W52/367 ,  H04W52/383 ,  H04W52/386 ,  H04W72/082 ,  H04W76/14

    Abstract: Disclosed are a method, network device, and system for transmit power control during D2D communication. The method comprises: a network device determines the maximum allowed transmit power of a first terminal on the basis of the maximum level of interference that a cellular network can handle and/or the maximum level of interference that the first terminal is allowed to cause to a receiving terminal, and sends said maximum allowed transmit power of the first terminal to the first terminal, said first terminal being the sending device of D2D communication; and the first terminal determines transmit power on the basis of said maximum allowed transmit power. By means of the present technical solutions, when determining transmit power, a D2D sending device takes into account the maximum interference a cellular network can handle and/or the maximum level of interference that may be caused to a receiving terminal, thereby reducing the interference caused to D2D communicating terminals or to terminals of other cells using the resources of a cellular network.

    Abstract translation: 公开了一种在D2D通信期间发射功率控制的方法，网络设备和系统。 该方法包括：网络设备基于蜂窝网络可以处理的最大干扰水平和/或允许第一终端引起的最大干扰水平来确定第一终端的最大允许发射功率 并将所述第一终端的所述最大允许发送功率发送给所述第一终端，所述第一终端是D2D通信的发送装置; 并且所述第一终端基于所述最大允许发送功率来确定发送功率。 通过本技术方案，当确定发射功率时，D2D发送设备考虑到蜂窝网络可以处理的最大干扰和/或可能对接收终端造成的最大干扰水平，从而减少了所引起的干扰 使用蜂窝网络的资源到D2D通信终端或其他小区的终端。

    CSI FEEDBACK METHOD, PRECODING METHOD, AND APPARATUS
    7.
    发明申请
    CSI FEEDBACK METHOD, PRECODING METHOD, AND APPARATUS 审中-公开

    公开(公告)号：US20190074884A1

    公开(公告)日：2019-03-07

    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: H04B7/06 ,  H04W72/04 ,  H04B7/0456

    CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0632 ,  H04B7/0639 ,  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.

    REFERENCE SIGNAL MAPPING METHOD AND DEVICE
    8.
    发明申请
    REFERENCE SIGNAL MAPPING METHOD AND DEVICE 审中-公开

    公开(公告)号：US20180227095A1

    公开(公告)日：2018-08-09

    申请号：US15747753

    申请日：2016-06-20

    Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

    Inventor： Rakesh TAMRAKAR ,  Qiubin GAO ,  Runhua CHEN ,  Wenhong CHEN ,  Hui LI

    IPC: H04L5/00

    Abstract: A reference signal mapping method and a reference signal mapping device are provided. The reference signal mapping method includes steps of: determining a position of a RE to which a CSI-RS has been mapped in accordance with an N-port reference signal pattern, N being equal to 12 or 16; and performing a resource mapping operation on the CSI-RS in accordance with the determined position of the RE. The position of the RE to which the CSI-RS has been mapped in the N-port reference signal pattern being determined in accordance with a position of the RE to which the CSI-RS has been mapped in one or more of a 2-port reference signal pattern, a 4-port reference signal pattern and an 8-port reference signal pattern. As a result, it is able to achieve the 12-port or 16-port CSI-RS mapping, thereby to achieve the 12-port or 16-port CSI-RS transmission.

    CHANNEL STATE INFORMATION FEEDBACK AND RECEIVING METHOD AND DEVICE
    9.
    发明申请
    CHANNEL STATE INFORMATION FEEDBACK AND RECEIVING METHOD AND DEVICE 审中-公开

    公开(公告)号：US20180227030A1

    公开(公告)日：2018-08-09

    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: H04B7/06 ,  H04L5/00

    CPC classification number: H04B7/0626 ,  H04B7/0639 ,  H04B7/0645 ,  H04L1/00 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0057

    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.

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