公开(公告)号：US20180205439A1

公开(公告)日：2018-07-19

申请号：US15745122

申请日：2016-07-19

Applicant: China Academy of Telecommunications Technology

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

IPC: H04B7/06 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04B7/0626 ,  H04B7/04 ,  H04B7/0643 ,  H04W24/10 ,  H04W72/0413 ,  H04W72/0446

Abstract: Disclosed are a channel status information (CSI) feedback and control method and device. The method comprises: a terminal receives trigger signaling sent by a base station, the trigger signaling being used for instructing the terminal to report CSI obtained within a specified measurement window; and the terminal reports the CSI that is measured by the terminal within the specified measurement window to the base station. Because a terminal reports only CSI that is measured by the terminal within a specified measurement window, the frequency of feeding back CSI by the terminal is reduced, and CSI feedback overheads are also reduced.

公开(公告)号：US20180176809A1

公开(公告)日：2018-06-21

申请号：US15901257

申请日：2018-02-21

Applicant: China Academy of Telecommunications Technology

Inventor： Qiubin GAO

IPC: H04W24/08 ,  H04B7/0413 ,  H04L25/02 ,  H04B7/04 ,  H04L5/00 ,  H04B7/024 ,  H04W24/10 ,  H04B7/06 ,  H04B7/0417 ,  H04W84/04

CPC classification number: H04W24/08 ,  H04B7/024 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0626 ,  H04B7/0632 ,  H04L5/0023 ,  H04L5/005 ,  H04L5/0057 ,  H04L25/0258 ,  H04W24/10 ,  H04W84/042

Abstract: A method, system, and device for transmitting a preamble signal and for signal measurement, for use in solving the problem found in the prior art that the transmission power of each antenna unit is greatly reduced as a result that each antenna unit transmits one preamble signal and that the complexity of a user equipment is increased when the antenna units are of a great number. The method of embodiments of the present disclosure comprises: a network side device transmits to the user equipment determined CSI feedback configurations, where one CSI feedback configuration corresponds to one CSI-RS resource, and the preamble signal corresponding to each port of the one CSI-RS resource is transmitted via one set of antenna unit corresponding to the port. Employment of the solution of the embodiments of the present disclosure increases the transmission power of the antenna units, allows the user equipment to correctly perform signal measurement, increases the performance of data transmission, and reduces the complexity of the user equipment when the antenna units are of a great number.

公开(公告)号：US20180138954A1

公开(公告)日：2018-05-17

申请号：US15570263

申请日：2016-03-31

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

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

IPC: H04B7/04

Abstract: The embodiments of the present disclosure provide a method and a device for constraining a codebook subset. The method includes steps of: determining codebook subset constraint parameters for all or parts of matrix sets for constructing a codebook respectively, each codebook subset constraint parameter indicating an available matrix in a corresponding matrix set; and transmitting the determined codebook subset constraint parameters to a UE. The number of the matrices in each matrix set for constructing the codebook is far less than the number of precoding matrices in the codebook.

公开(公告)号：US20180123661A1

公开(公告)日：2018-05-03

申请号：US15851682

申请日：2017-12-21

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Qiubin GAO

IPC: H04B7/0456 ,  H04B7/04 ,  H04B7/06 ,  H04L1/06

CPC classification number: H04B7/0456 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0663 ,  H04L1/06

Abstract: A method, system, and device for transmitting coding instruction information, for use in solving the problem as current codebooks are designed for horizontal beamforming/pre-coding, direct application of the codebooks to a three-dimensional beamforming/pre-coding technology causes performance degradation. The method of embodiments of the present invention comprises: a user equipment determines and transmits to a network side first pre-coding instruction information and second pre-coding instruction information, where a first component pre-coding matrix is a block diagonal matrix, a submatrix on the diagonal is equal to the Kronecker product of two matrices, a second component pre-coding matrix is constituted by a weighted column selection vector, with the exception of a P-number of nonzero elements, the remainder of the weighted column selection vector is all zeros, and P is a positive integer. Employment of the method of the embodiments of the present invention increases the performance of the three-dimensional beamforming/pre-coding technology.

公开(公告)号：US20180083802A1

公开(公告)日：2018-03-22

申请号：US15561357

申请日：2016-01-27

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Shaoli KANG ,  Bin REN ,  Hao LIU ,  Qiong LI ,  Qiubin GAO

IPC: H04L25/02 ,  H04B7/04 ,  H04L5/00

CPC classification number: H04L25/0204 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0802 ,  H04B7/0848 ,  H04J15/00 ,  H04L5/0001 ,  H04L5/0005

Abstract: A signal detection method and a signal detection device are provided. The signal detection method includes steps of: performing channel estimation based on a signal received by each of antennae, to acquire a channel estimation matrix for transmitters multiplexing on identical time-frequency resources on each of the antennae; determining an equivalent Pattern Division Multiple Access (PDMA) channel estimation matrix for each of the antennae based on a PDMA encoding matrix, and acquiring an equivalent multi-antenna PDMA channel estimation matrix for all the antennae based on the equivalent PDMA channel estimation matrix for each of the antennae; performing a joint detection based on the equivalent multi-antenna PDMA channel estimation matrix, an equivalent multi-antenna received signal vector and a set of constellation points of the transmitters multiplexing on the identical time-frequency resources, to acquire Log Likelihood Ratios (LLRs) for the transmitters; and decoding the LLRs for the transmitters, to acquire multi-user information at transmitting end.

公开(公告)号：US20180069613A1

公开(公告)日：2018-03-08

申请号：US15563464

申请日：2016-02-03

Applicant: China Academy of Telecommunications Technology

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

IPC: H04B7/06 ,  H04L1/00

CPC classification number: H04B7/0639 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/066 ,  H04L1/0026 ,  H04W24/10

Abstract: Disclosed are a channel state information feedback and acquisition method and device. The application comprises: acquiring, by a terminal, a first-dimension downlink reference signal resource, S second-dimension downlink reference signal resources and a first corresponding relationship of the above configured by a network device; measuring, by the terminal and according to the first-dimension downlink reference signal resource, a first-dimension downlink reference signal, and selecting, by the terminal and according to the measured first-dimension PMI and the first corresponding relationship, a resource for measuring a second-dimension downlink reference signal, measuring, according to the resource, the second-dimension downlink reference signal, and feeding back channel state information, wherein the second-dimension reference signal is transmitted after forming a first-dimension beamforming weight. The present application enables acquisition of channel state information between a network device and a terminal, and adjustment of the first-dimension beamforming weight for forming the second-dimension reference signal according to the PMI fed back by the first-dimension.

公开(公告)号：US20170222707A1

公开(公告)日：2017-08-03

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

CPC classification number: H04B7/0632 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0639 ,  H04L1/00 ,  H04L1/004 ,  H04L1/0687 ,  H04L1/0693

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：US20160381661A1

公开(公告)日：2016-12-29

申请号：US15112106

申请日：2015-01-15

Applicant: China Academy of Telecommunications Technology

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

IPC: H04W72/02 ,  H04W72/04 ,  H04W76/02

CPC classification number: H04W72/02 ,  H04W72/0446 ,  H04W76/14 ,  H04W84/18 ,  H04W88/02

Abstract: Disclosed are a D2D data transmission method and device. The method comprises: determining, by a D2D data sending end, a state of each sending opportunity in a sending window in the same manner as a D2D data receiving end, wherein the sending window is uniformly divided into a plurality of sending opportunities, and the state of each sending opportunity comprises a data sending state and a silent state; and sending D2D data to the D2D data receiving end in the sending opportunity of each data sending state in the sending window. By means of the technical solution provided in the embodiments of the present application, a D2D data sending end sends data on different resources (sending opportunities) or becomes silent, so that different D2D data sending ends are staggered on the resources, thereby alleviating the influence of “near-far” effects.

Abstract translation: 公开了一种D2D数据传输方法和装置。 该方法包括：以与D2D数据接收端相同的方式，通过D2D数据发送端确定发送窗口中每个发送机会的状态，其中发送窗口被均匀地划分为多个发送机会，并且 每个发送机会的状态包括数据发送状态和静默状态; 并且在发送窗口中的每个数据发送状态的发送机会中向D2D数据接收端发送D2D数据。 通过本申请实施例提供的技术方案，D2D数据发送端发送关于不同资源（发送机会）的数据或者变得无声，使得不同的D2D数据发送结束在资源上交错，从而减轻影响 的“近远”效应。

公开(公告)号：US20160219616A1

公开(公告)日：2016-07-28

申请号：US14899769

申请日：2014-07-03

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Hao NI ,  Qiubin GAO

IPC: H04W72/12 ,  H04B7/06 ,  H04B7/04 ,  H04L5/00

CPC classification number: H04W72/1273 ,  H04B7/0456 ,  H04B7/0626 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0028 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0094 ,  H04L25/03 ,  H04W72/1284 ,  H04W72/14

Abstract: The present disclosure provides a scheduling method, a coordinated-transmission node and a CCN for downlink coordinated-transmission. The scheduling method at a coordinated-transmission node side includes: receiving, by a coordinated-transmission node, scheduling privilege information corresponding to a downlink time-frequency resource from a CCN, the scheduling privilege information corresponding to the downlink time-frequency resource indicating a scheduling privilege of the coordinated-transmission node over the downlink time-frequency resource; and performing, by the coordinated-transmission node, the scheduling in accordance with the received scheduling privilege information and the latest CSI reported by the terminal. According to the embodiments of the present disclosure, the CCN merely determines the scheduling privilege of each coordinated-transmission node over the downlink time-frequency resource, and each coordinated-transmission node performs the scheduling in accordance with its scheduling privilege and the latest CSI reported by the terminal that is connected to the coordinated-transmission node.

Abstract translation: 本公开提供了一种用于下行链路协调传输的调度方法，协调传输节点和CCN。 协调发送节点侧的调度方法包括：通过协调传送节点从CCN接收与下行链路时间 - 频率资源对应的调度特权信息，对应于下行链路时间 - 频率资源的调度特权信息，表示 协调传输节点在下行链路时频资源上的调度权限; 并且由所述协调传输节点根据所接收的调度特权信息和由所述终端报告的最新CSI进行调度。 根据本公开的实施例，CCN仅通过下行链路时频资源确定每个协调传输节点的调度权限，并且每个协调传输节点根据其调度权限执行调度，并且报告最新的CSI 由连接到协调传输节点的终端。