公开(公告)号：US11218277B2

公开(公告)日：2022-01-04

申请号：US16645524

申请日：2018-06-28

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Hui Li ,  Qiubin Gao ,  Tamrakar Rakesh ,  Runhua Chen ,  Xin Su ,  Deshan Miao ,  Qiuping Huang ,  Mengjun Wang

IPC: H04L5/00

Abstract: Provided in the embodiments of the present application are a channel state indication (CSI) information reporting and receiving method and a communication device, which are used to provide for a terminal in an NR system a solution for mapping CSI information to an uplink channel and transmitting the same. The method comprises: a terminal receives an uplink channel resource configuration signaling and/or a demodulation reference signal (DMRS) configuration signaling sent by a base station, and determines a mapping symbol set, wherein the DMRS configuration signaling is used to indicate the number of DMRSes configured by a system for an uplink channel and the time-frequency location of an occupied OFDM symbol, the uplink channel resource configuration signaling represents the time-frequency resource of the uplink channel, and the mapping symbol set is a set of symbols adjacent to the OFDM symbol; and the terminal measures a downlink channel, calculates CSI information, encodes the CSI information, and maps an information part comprising rank indication (RI) information onto an RE of at least one orthogonal frequency-division multiplexing (OFDM) symbol in the mapping symbol set to carry out transmission.

公开(公告)号：US11095410B2

公开(公告)日：2021-08-17

申请号：US16638456

申请日：2018-08-10

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Qiuping Huang ,  Qiubin Gao ,  Rakesh Tamrakar ,  Runhua Chen ,  Xin Su ,  Hui Li ,  Mengjun Wang

IPC: H04L12/28 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04W24/08 ,  H04W28/16 ,  H04W72/08 ,  H04J1/16

Abstract: A data transmission method, a base station, and a terminal are provided. The method corresponding to the base station includes sending SRS resource configuration information for uplink channel quality measurement and configuration information of a transmission layer quantity, wherein the configuration information of the transmission layer quantity includes a set of maximum quantities of transmission layers allowed to be transmitted by a terminal or the quantity of layers allowed to be transmitted by the terminal; determining uplink transmission indication information; determining a payload corresponding to the uplink transmission indication information according to the SRS resource configuration information and the configuration information of the transmission layer quantity; sending the uplink transmission indication information to the terminal using the payload.

公开(公告)号：US10659119B2

公开(公告)日：2020-05-19

申请号：US16475072

申请日：2017-08-25

Applicant: China Academy of Telecommunications Technology

Inventor： Hui Li ,  Qiubin Gao ,  Xin Su ,  Tamrakar Rakesh ,  Runhua Chen ,  Qiuping Huang ,  Chuanjun Li ,  Mengjun Wang

IPC: H04L27/26 ,  H04B7/0456 ,  H04L25/02

Abstract: The present invention relates to the field of wireless communications, and in particular, to a method for transmitting a reference signal, a method for determining a phase noise, and related apparatuses, to resolve the problem in the prior art that different phase noises of different antenna units or antenna ports of a transmitter cannot be accurately estimated and compensated for. The method comprises: the transmitter respectively transmitting each precoded DMRS and PTRS to a receiver via respective corresponding antenna groups having a same phase noise, and when the receiver receives the PTRS, performing channel estimation based on each received PTRS, to determine phase changes caused by phase noises corresponding to different antenna groups. In this way, even if different antennas of a transmitter have different phase noises, phase changes caused by the different phase noises can still be accurately determined, so that all data transmitted by the different antenna groups can be accurately demodulated according to different phase changes.