公开(公告)号：US10912014B2

公开(公告)日：2021-02-02

申请号：US16319807

申请日：2017-06-08

Applicant: China Academy of Telecommunications Technology

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

IPC: H04W48/16 ,  H04J11/00 ,  H04L27/26

Abstract: Disclosed are a data transmission method and device. The method comprises: a sending end sending at least one synchronization signal (SI), with the SI carrying a first identifier; and at a time-frequency location of system information corresponding to the SI, sending the system information, the system information carrying information for indicating a second identifier, and identification information about the sending end comprising the first identifier and the second identifier. According to a mapping relationship between an SI and a first identifier, a receiving end can obtain the first identifier after detecting the SI; and by means of carrying information for indicating a second identifier in system information, the receiving end can obtain the second identifier after detecting the system information, so that the receiving end can obtain all the identification information about the sending end according to the first identifier and the second identifier.

公开(公告)号：US10567049B2

公开(公告)日：2020-02-18

申请号：US15755090

申请日：2016-07-19

Applicant: China Academy of Telecommunications Technology

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

IPC: H04B7/0456 ,  H03M1/26 ,  H04L25/03 ,  H04B7/06

Abstract: Methods and apparatuses for transmitting coding indication information and determining a precoding matrix, for use in resolving the problem that the resolution of code words in a codebook generated by using a combination of a beam vector subgroup and column selection cannot be flexibly adjusted. The method comprises: determining first precoding indication information and second precoding indication information, the first precoding indication information corresponding to a first-stage precoding matrix, the second precoding indication information corresponding to a direction weighting vector and a phase adjustment factor, the direction weighting vector being used for performing interpolation processing on parts representing angles corresponding to beam vectors in the all beam vectors in each polarization direction in the first-stage precoding matrix, the phase adjusting factor being used for performing phase adjustment on different polarization directions of the first-stage precoding matrix, and the first-stage precoding matrix, the direction weighting vector, and the phase adjustment factor being used for generating a precoding matrix. The resolution of a precoding matrix is flexibly adjusted by using a direction weighting vector.

公开(公告)号：US10516494B2

公开(公告)日：2019-12-24

申请号：US15539981

申请日：2015-12-09

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04L25/03 ,  H04B17/318 ,  H04W52/00 ,  H04B7/0456 ,  H04B7/0452 ,  H04L25/02

Abstract: The present disclosure provides a cell measurement method and a terminal. The cell measurement method includes steps of: measuring a pilot signal from a to-be-measured cell, so as to acquire an channel estimation of N pilot signal transmission ports of the to-be-measured cell, N≥1; determining an equivalent received power corresponding to each precoding matrix in accordance with each precoding matrix in a set of precoding matrices and the channel estimation of the N pilot signal transmission ports of the to-be-measured cell; and determining an equivalent received power of the to-be-measured cell in accordance with the equivalent received power corresponding to each precoding matrix.

公开(公告)号：US10291308B2

公开(公告)日：2019-05-14

申请号：US15514817

申请日：2015-09-17

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04B17/00 ,  H04B7/06 ,  H04L1/00 ,  H04B7/0456 ,  H04L1/06

Abstract: The present disclosure provides a CSI feedback method, a CSI feedback device and a CSI feedback system. The CSI feedback method includes steps of: configuring, by a network side device, a first downlink channel measurement pilot for a UE; and receiving, by the network side device, first PMI information fed back by the UE. The first PMI information is acquired by the UE based on measurement of the first downlink channel measurement pilot and second PMI information. A dimension represented by the first PMI information is different from a dimension represented by the second PMI information.

公开(公告)号：US11949620B2

公开(公告)日：2024-04-02

申请号：US16496698

申请日：2018-03-14

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Rakesh Tamrakar ,  Qiubin Gao ,  Xin Su ,  Hui Li ,  Qiuping Huang

IPC: H04L5/00 ,  H04W72/044 ,  H04W72/1268 ,  H04W72/23

CPC classification number: H04L5/0051 ,  H04W72/046 ,  H04W72/1268 ,  H04W72/23

Abstract: A signal processing method and device are provided. The method includes indicating a first uplink sounding reference signal resource to a terminal, wherein the first uplink sounding reference signal resource is used for uplink beam scanning; receiving a uplink sounding reference signal transmitted by the terminal by using the first uplink sounding reference signal resource; determining a target uplink sounding reference signal based on the uplink sounding reference signal transmitted by the terminal, and transmitting an identifier of the target uplink sounding reference signal to the terminal; indicating a second uplink sounding reference signal resource to the terminal, the second uplink sounding reference signal resource being used to cause the terminal to transmit an uplink sounding reference signal for channel measurement based on the identifier of the target uplink sounding reference signal and the second uplink sounding reference signal resource.

公开(公告)号：US11770757B2

公开(公告)日：2023-09-26

申请号：US16317945

申请日：2017-07-11

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04W48/08 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04W48/08 ,  H04L5/0094 ,  H04L27/2666

Abstract: A method and a device for accessing a system information area or a network area are provided. The method includes: receiving, by a terminal, at least one initial access signal (IAS) transmitted from the system information area or the network area; and obtaining, by the terminal, one or more of a subframe boundary, a system bandwidth, a starting frequency and an ending frequency of the system information area or the network area based on the received IAS.

公开(公告)号：US11463219B2

公开(公告)日：2022-10-04

申请号：US16645413

申请日：2018-09-05

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04L5/00

Abstract: The present disclosure provides a reference signal transmission method, a reference signal transmission device, a base station and a user equipment. The transmission method of the present disclosure includes: implicitly or explicitly indicating to a user equipment (UE), position information of a target subcarrier for mapping a target phase tracking reference signal (PTRS) port, among subcarriers occupied by a target demodulation reference signal (DMRS) port. The target DMRS port is a DMRS port associated with the target PTRS port.

公开(公告)号：US11336339B2

公开(公告)日：2022-05-17

申请号：US16608154

申请日：2018-04-17

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Rakesh Tamrakar ,  Qiubin Gao ,  Hui Li

IPC: H04B7/0456 ,  H04L1/00 ,  H04W72/04 ,  H04W72/12

Abstract: Provided in the present disclosure are a precoding matrix indication method, a terminal, and a network device, the method includes: receiving, by a terminal, a control signaling transmitted from a network side device, wherein the control signaling includes N bits of precoding information, and the N is a positive integer; determining, by the terminal, a quantity of precoding granules according to a scheduling resource, and determining, by the terminal, bits of the precoding information of each of the precoding granules in the N bits of precoding information according to the quantity of the precoding granules, wherein each of the precoding granules includes at least one subband, and each of the at least one subband includes at least one PRB; and acquiring, by the terminal, a precoding matrix indicated by the bits of the precoding information of each of the precoding granules.

公开(公告)号：US11323219B2

公开(公告)日：2022-05-03

申请号：US16322460

申请日：2017-07-18

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04L5/00 ,  H04W72/04

Abstract: A triggering method and a transmitting method for an uplink reference signal in a communication system, apparatuses thereof, and a storage medium are provided. The communication system includes at least two different signal parameters. The triggering method applied to a network side includes: generating, by the network side, a trigger signaling for triggering a terminal to transmit the uplink reference signal to the network side for one or more times; and transmitting, by the network side, the trigger signaling to the terminal.

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.