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公开(公告)号：US20200028553A1
公开(公告)日：2020-01-23
申请号：US16335660
申请日：2017-09-12
Inventor： Runhua CHEN , Qiuping HUANG , Qiubin GAO , Rakesh TAMRAKAR
IPC: H04B7/0456 , H04B7/06 , H04B7/0417 , H04L27/26
Abstract: A signal transmission method and device are provided. The method includes: determining a codebook C being a set of matrices W; determining a matrix set Ω={W}∈C from the codebook C; generating one or more layers of signals, beamforming the signals with matrixes in the matrix set Ω, and cyclically mapping the matrixes in the matrix set Ω to different locations of transmission resources; and transmitting the beamformed signals at the different locations of the transmission resources.
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22.发明申请公开(公告)号：US20190326964A1
公开(公告)日：2019-10-24
申请号：US16475072
申请日：2017-08-25
Inventor： Hui LI , Qiubin GAO , Xin SU , Tamrakar PAKESH , Runhua CHEN , Qiuping HUANG , Chuanjun LI , Mengjun WANG
IPC: H04B7/0456 , H04L25/02 , H04L27/26
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.
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公开(公告)号：US20190281538A1
公开(公告)日：2019-09-12
申请号：US16319807
申请日：2017-06-08
Inventor： Qiuping HUANG , Qiubin GAO , Runhua CHEN , Hui LI , Tamrakar RAKESH , Yang SONG , Mengjun WANG , Chuanjun LI , Xin SU , Yu Yang
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.
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公开(公告)号：US20190074885A1
公开(公告)日：2019-03-07
申请号：US16084219
申请日：2017-02-20
Inventor： Wenhong CHEN , Runhua CHEN , Qiubin GAO , Tamrakar RAKESH , Hui LI
IPC: H04B7/06 , H04B7/0456
Abstract: Disclosed are CSI feedback method, a precoding method, and an apparatus. In the present invention, after a terminal determines first precoding matrices on a first subband, the terminal obtains second precoding matrices corresponding to physical resources in the first subband according to the first precoding matrices and a column vector arrangement mode corresponding to the first precoding matrices; and then, the terminal determines CSI on a second subband according to the second precoding matrices. In the embodiment, precoding matrices are expanded according to a column vector arrangement mode, so as to obtain second precoding matrices corresponding to different physical resources; accordingly based on the second precoding matrices, CSI is measured by using the corresponding second precoding matrices on different physical resources. In the embodiment, precoding matrices are expanded according to a column vector arrangement mode, so that precoding can be performed on each data flow in transmission by using different column vectors, thereby improving the robustness of a transmission solution, and obtaining a stabler precoding gain.
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公开(公告)号：US20180234154A1
公开(公告)日：2018-08-16
申请号：US15749054
申请日：2016-07-25
Inventor： Wenhong CHEN , Runhua CHEN , Tamrakar RAKESH , Qiubin GAO , Hui LI
IPC: H04B7/06 , H04B7/0417 , H04L1/00 , H04L5/00
CPC classification number: H04B7/0626 , H04B7/0417 , H04B7/0456 , H04B7/063 , H04B7/0639 , H04L1/0026 , H04L5/0048 , H04L5/005 , H04L5/0057 , H04W72/042
Abstract: The present invention discloses a channel state information (CSI) feedback method and related device for an FD MIMO system, and is configured to support the scenario in which various CSI related information needs to be fed back after a CSI measurement in an FD MIMO system. The method comprises: a terminal receives a CSI feedback configuration group indicated by a base station and configuration information for performing a CSI feedback based on the CSI feedback configuration group; and the terminal performs a CSI measurement and feedback according to the CSI feedback configuration group and the configuration information, wherein the CSI feedback configuration group comprises at least one CSI feedback configuration, and the CSI feedback configuration is a downlink signal configuration for a downlink CSI measurement and feedback.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20170338878A1
公开(公告)日：2017-11-23
申请号：US15527311
申请日：2015-09-28
Inventor： Qiubin GAO , Runhua CHEN , Hui LI , Rakesh TAMRAKAR
CPC classification number: H04B7/0626 , H04B7/024 , H04B7/0456 , H04B7/0621 , H04B7/0639 , H04B17/318 , H04B17/345 , H04L1/0026 , H04L1/06 , H04L5/0035 , H04L5/0048 , H04L5/0051 , H04L5/0057 , H04L5/0058 , H04L5/006 , H04L5/0073 , H04L25/021 , H04W24/10 , H04W72/082
Abstract: A CSI measurement method, a CSI acquisition method, a terminal and a network device are provided, to measure CSI. The terminal performs interference measurement to acquire initial interference measurement result, determine the CSI based on the initial interference measurement result and an interference measurement parameter configured by the network device, and then report the determined CSI to the network device. The interference measurement parameter is configured by the network device, so the interference measurement parameter configured by the network device is capable of reflecting an actual situation of interference information, and interference information acquired by the terminal based on the interference measurement parameter matches interference information for actual transmission in a better manner. As a result, it is able to improve a matching degree between the interference information acquired by the terminal and the interference information for the actual transmission, thereby to enable a network to select a more appropriate parameter for link adaptation.
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公开(公告)号：US20210120536A1
公开(公告)日：2021-04-22
申请号：US16494647
申请日：2018-02-26
Inventor： Qiubin GAO , Rakesh TAMRAKAR , Xin SU , Runhua CHEN
Abstract: A method and an apparatus for determining an uplink transmission beam are provided. The method includes: a base station transmitting uplink transmission beam indication information to a terminal; where the uplink transmission beam indication information includes beam type indication information, the beam type indication information is used to indicate that the uplink transmission beam for the terminal is obtained based on uplink reference signals, or the beam type indication information is used to indicate that the uplink transmission beam for the terminal is obtained based on downlink reference signals, so as to ensure that the base station is capable of selecting an uplink transmission beam for the terminal.
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公开(公告)号：US20210045140A1
公开(公告)日：2021-02-11
申请号：US16969151
申请日：2019-02-12
Inventor： Qiuping HUANG , Runhua CHEN , Qiubin GAO , Rakesh TAMRAKAR
IPC: H04W72/12
Abstract: A data transmission method and a data transmission device are provided. The method includes: receiving first indication information sent by a network side device, the first indication information is used to instruct the UE to send a first signal; and determining actual first uplink transmission characteristic of the first signal when valid first uplink transmission characteristic of the first signal is not obtained, and sending the first signal through the actual first uplink transmission characteristic, or not sending the first signal when valid first uplink transmission characteristic of the first signal is not obtained.
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公开(公告)号：US20200036421A1
公开(公告)日：2020-01-30
申请号：US16337373
申请日：2017-09-13
Inventor： Xin SU , Qiubin GAO , Rakesh TAMRAKAR , Runhua CHEN , Chuanjun LI , Mengjun WANG , Hui LI , Qiuping HUANG
IPC: H04B7/06 , H04B7/0452 , H04B7/08 , H04W16/28 , H04L5/00
Abstract: A beam scanning and search tracking method and device are provided. The method includes constructing analog beams and performing digital beam-forming to the analog beams so as to form equivalent beams; transmitting reference signals to a second communication node by using the equivalent beams; receiving beam information about the equivalent beams and corresponding channel state information fed back by the second communication node according to the reference signals; performing a beam scanning operation and a search tracking operation by using the beam information and the channel state information.
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公开(公告)号：US20190341979A1
公开(公告)日：2019-11-07
申请号：US16337841
申请日：2017-07-12
Inventor： Qiubin GAO , Runhua CHEN , Tamrakar RAKESH , Hui LI , Qiuping HUANG
IPC: H04B7/0456 , H04B7/06 , H04L1/00 , H04W88/06
Abstract: Disclosed in the present invention are a method and a device for transmitting channel state information, for solving the problem that due to the limitation of a codebook structure, the prior art can only provide channel state information with limited precision and it is not suitable for a base station to use a transmission scheme of an advanced preprocessing algorithm. The method comprises: a terminal determining a basis matrix according to a candidate wave beam vector set, the basis matrix being a matrix formed by N wave beam vectors from the candidate wave beam vector set, the N being a positive integer; the terminal determining a combined coefficient matrix according to the basis matrix and a channel state parameter; the terminal feeding back the identification information of the basis matrix and the combined coefficient matrix to a base station. The invention effectively improves the precision of channel state information feedback, and improves the performance of multi-antenna transmission, especially multiple user-multiple input multiple output (MU-MIMO) transmission.
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