公开(公告)号：US20160316352A1

公开(公告)日：2016-10-27

申请号：US15102475

申请日：2014-12-04

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04W8/00 ,  H04W72/04 ,  H04W4/06 ,  H04W76/02

CPC classification number: H04W8/005 ,  H04W4/06 ,  H04W72/042 ,  H04W76/14

Abstract: Disclosed are a D2D signal detecting method and device, comprising: a user equipment determines a physical resource for discovery signal detection; the user equipment determines the number of discovery resources used by the discovery signals according to the physical resource area for discovery signal detection, or according to a discovery resource set of the discovery sequence contained in the discovery signal detected in the physical resource area, the number of discovery resources being the number of discovery resources used in one discovery period or in the physical resource area for sending the same discovery signal; the user equipment detects the discovery signals according to the determined number of discovery resources. The present invention can improve performance loss caused by D2D signal detection and can reduce the complexity of D2D signal detection by user equipment.

Abstract translation: 公开了一种D2D信号检测方法和装置，包括：用户设备确定用于发现信号检测的物理资源; 用户设备根据发现信号检测的物理资源区域确定发现信号使用的发现资源的数量，或者根据包含在物理资源区域中检测到的发现信号中的发现序列的发现资源集，确定数量 发现资源是在一个发现周期中或在用于发送相同发现信号的物理资源区域中使用的发现资源的数量; 用户设备根据确定的发现资源数量来检测发现信号。 本发明可以改善由D2D信号检测引起的性能损失，并且可以降低用户设备的D2D信号检测的复杂性。

公开(公告)号：US20210218456A1

公开(公告)日：2021-07-15

申请号：US16081878

申请日：2017-02-21

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Hui LI ,  Quibin 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.