公开(公告)号：US20180316405A1

公开(公告)日：2018-11-01

申请号：US15771079

申请日：2016-12-29

Applicant: CHINA ACADEMY OF TELECOMUNICATIONS TECHNOLOGY

Inventor： Chuanjun LI ,  Xin SU ,  Yang SONG

IPC: H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/04

CPC classification number: H04B7/0626 ,  H04B7/04 ,  H04B7/043 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/06 ,  H04L5/0048

Abstract: A method for feeding back CIS includes: dividing a plurality of antenna ports into a plurality of groups of antenna ports; configuring for each group a same intra-group codebook set consisting of a plurality of intra-group precoding matrices, allocating for each group a plurality of different reference signals corresponding to a same reference resource, and configuring for each antenna port in each group a precoded reference signal acquired after a precoding operation using the intra-group precoding matrices, the number of the reference resources corresponding to the number of the intra-group precoding matrices in the intra-group codebook set, and the number of the reference signals corresponding to each reference resource corresponding to the number of groups of inter-group antenna ports; transmitting the precoded reference signal to a UE via each antenna port; and receiving the CSI fed back by the UE after measurement on the reference signal.

公开(公告)号：US20190222369A1

公开(公告)日：2019-07-18

申请号：US16324471

申请日：2017-07-24

Applicant: CHINA ACADEMY OF TELECOMUNICATIONS TECHNOLOGY

Inventor： Rakesh TAMRAKAR ,  Qiubin GAO ,  Runhua CHEN ,  Hui LI ,  Qiuping HUANG ,  Mengjun WANG ,  Chuanjun LI ,  Yu YANG ,  Yang SONG ,  Xin SU

IPC: H04L5/00 ,  H04W28/02 ,  H04W72/04 ,  H04B1/713

CPC classification number: H04L5/005 ,  H04B1/713 ,  H04L5/0005 ,  H04L5/0012 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0091 ,  H04W28/0215 ,  H04W72/0453

Abstract: A method for transmitting uplink Sounding Reference Signal, SRS, a terminal, a network side device and a storage medium are provided. The method includes determining a transmission manner for one or more uplink SRSs in a wideband system by a terminal according to a configuration from a network side device, wherein the wideband system is configured with a plurality of basic parameters; transmitting the one or more uplink SRSs to the network side device in the wideband system by the terminal according to the transmission manner.