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公开(公告)号：US10305569B2
公开(公告)日：2019-05-28
申请号：US15563464
申请日：2016-02-03
Inventor： Hui Li , Qiubin Gao , Runhua Chen , Tamrakar Rakesh , Wenhong Chen
IPC: H04B7/06 , H04W24/10 , H04L1/00 , H04B7/0456
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.
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公开(公告)号：US20170214447A1
公开(公告)日：2017-07-27
申请号：US15328489
申请日：2015-07-17
Inventor： Hui Li
IPC: H04B7/06 , H04W24/02 , H04B17/327 , H04L5/00
CPC classification number: H04B7/0617 , H04B7/04 , H04B7/0626 , H04B7/0639 , H04B7/0695 , H04B17/327 , H04L1/06 , H04L5/0048 , H04W24/02
Abstract: The embodiments of the present invention relate to the field of wireless communications, and more particularly, to a method and apparatus for determining three-dimensional beam pre-coding information so as to perform three-dimensional beam forming. In the embodiments of the present invention, a network device first determines a first optimal beam forming vector, and then determines a second optimal beam forming vector from a second beam forming vector set corresponding to the first optimal beam forming vector and performs channel measurement via a formed pilot to determine optimal pre-coding information about a second dimension. Since an optimal beam forming vector therein is determined based on a beam forming vector set with a coarse particle granularity, and then an optimal beam forming vector therein is determined based on a corresponding beam forming vector set with a fine particle granularity, the purpose of determining the optimal beam forming vector with fine particle granularity and the optimal pre-coding information is achieved, which, compared with the prior art, reduces system resource expense, and further reduces the complexity of a user equipment.
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公开(公告)号：US11353542B2
公开(公告)日：2022-06-07
申请号：US16962173
申请日：2019-01-03
Inventor： Ren Da , Hui Li , Haiyang Quan , Qiubin Gao
Abstract: A positioning method and related devices are provided. The method includes: measuring, by a UE, PRSs sent by a plurality of positioning reference devices to obtain a plurality of PRS measurement results; measuring, by the UE, SPRSs sent by the plurality of positioning reference devices to obtain a plurality of SPRS measurement results; performing, by the UE, a positioning operation based on the plurality of PRS measurement results and the plurality of SPRS measurement results, wherein the positioning operation includes: sending the plurality of PRS measurement results and the plurality of SPRS measurement results to a positioning server, so that the positioning server determines a position of the UE based on the plurality of PRS measurement results and the plurality of SPRS measurement results; or determining, by the UE, the position of the UE based on the plurality of PRS measurement results and the plurality of SPRS measurement results.
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公开(公告)号：US11329708B2
公开(公告)日：2022-05-10
申请号：US16081878
申请日：2017-02-21
Inventor： Hui Li , Qiubin Gao , Runhua Chen , Wenhong Chen , Rakesh Tamrakar
IPC: H04B7/06 , H04B7/0456
Abstract: A CSI feedback method and a CSI feedback device are provided. The CSI feedback method includes: determining a first precoding matrix in a set of first precoding matrices, and determining a first precoding matrix index value corresponding to the first precoding matrix; determining a second precoding matrix in a set of second precoding matrices, and determining a second precoding matrix index value corresponding to the second precoding matrix, the second precoding matrix including a beam selection section for selecting beams from the beam groups for each antenna group and a phase adjustment section for adjusting phases among the plurality of antenna groups; and feeding back the first precoding matrix index value and the second precoding matrix index value to an access device, so as to enable the access device to select corresponding precoding matrices from the set of first precoding matrices and the set of second precoding matrix in accordance with the first precoding matrix index value and the second precoding matrix index value, and implement calculation on the selected precoding matrices to obtain a precoding matrix for data transmission.
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公开(公告)号：US11316634B2
公开(公告)日：2022-04-26
申请号：US16607433
申请日：2018-03-28
Inventor： Rakesh Tamrakar , Qiubin Gao , Hui Li
Abstract: Embodiments of the present disclosure provide a signal processing method and a signal processing device, which relate to the field of communication technology and used for the purpose of saving signaling resources. The signal processing method provided by embodiments of the present disclosure includes: transmitting a first indication message to a terminal device, wherein the first indication message is to trigger the terminal device to transmit feedback information on pilot signals; transmitting N downlink pilot signals to the terminal device, where N is an integer greater than or equal to 2, and the transmission manner of the N downlink pilot signals is semi-persistent transmission or aperiodic transmission, so that the terminal device, according to an acquired precoding manner of the downlink pilot signals and the first indication message, determines a feedback manner of the feedback information on the N downlink pilot signals and performs feedback, and wherein the feedback manner includes not feeding back or one-time feeding back of the feedback information on the N downlink pilot signals. In the embodiments of the present disclosure, the base station or the terminal device may not transmit feedback information on a plurality of pilot signals, or may one-time transmit feedback information on a plurality of pilot signals, thereby effectively saving signaling resources.
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Patent Agency Ranking
公开(公告)号：US11128351B2
公开(公告)日：2021-09-21
申请号：US16496409
申请日：2018-03-14
Inventor： Rakesh Tamrakar , Qiubin Gao , Xin Su , Hui Li , Qiuping Huang
IPC: H04L12/26 , H04B7/0404 , H04B7/0408 , H04B7/06 , H04L5/00 , H04L25/02
Abstract: An uplink data transmission method, a terminal, and a network side device are provided. The method includes: receiving, by a terminal, N uplink sounding pilot indices transmitted by a network side device, wherein N is a positive integer larger than 0; and transmitting, by the terminal, uplink data to the network side device in N uplink beam directions corresponding to the N uplink sounding pilot indices.
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公开(公告)号：US11101860B2
公开(公告)日：2021-08-24
申请号：US16494989
申请日：2018-03-08
Inventor： Qiubin Gao , Rakesh Tamrakar , Xin Su , Qiuping Huang , Hui Li
IPC: H04B7/06 , H04B7/08 , H04B7/0413
Abstract: A method, an apparatus, and an electronic device of determining beam reciprocity of a device, and a computer readable storage medium are provided. The method includes: instructing a second device to transmit, by using a transmission beam obtained based on beam reciprocity, a reference signal; receiving the reference signal transmitted by the second device, and calculating a reception quality of the reference signal; receiving a plurality of beam training signals transmitted by the second device, and calculating reception qualities of the plurality of beam training signals, respectively; comparing the reception quality of the reference signal with a reference reception quality obtained based on the reception qualities of the plurality of beam training signals, and determining, based on a result of the comparison, whether the beam reciprocity of the second device is established or not.
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58.发明授权公开(公告)号：US10938610B2
公开(公告)日：2021-03-02
申请号：US16331934
申请日：2017-07-24
Inventor： Hui Li , Qiubin Gao , Xin Su , Runhua Chen , Rakesh Tamrakar , Qiuping Huang , Chuanjun Li , Mengjun Wang
Abstract: A method for transmitting a phase noise compensation reference signal, a transmission device and a reception device are provided. The method includes: determining one or more configurations from N configurations for a transmission resource of the phase noise compensation reference signal; and transmitting the phase noise compensation reference signal according to the one or more configurations. The N configurations have different time-domain densities or different frequency-domain densities, or a plurality of configurations of the N configurations has a same time-domain density and a same frequency-domain density, where N is an integer greater than or equal to 2.
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公开(公告)号：US10892805B2
公开(公告)日：2021-01-12
申请号：US16338322
申请日：2017-07-25
Inventor： Xin Su , Qiubin Gao , Runhua Chen , Tamrakar Rakesh , Chuanjun Li , Mengjun Wang , Hui Li , Qiuping Huang
IPC: H04B7/0452 , H04B7/0408 , H04B7/06 , H04L5/00 , H04W72/04
Abstract: Disclosed are a beam scanning method and a related device, used for solving the problem that, during the existing process of determining the optimal transceiving beam by performing traversal search on a combination of potential transceiving beams, a large amount of system overhead needs to be occupied, thus reducing the system efficiency and the adaptability to a time-varying channel. The method comprises: a first communication node determines at least one transmitted beam according to the optimal receiving beam group between a receiver of the first communication node and a transmitter of a second communication node; the first communication node sequentially sends a signal to the second communication node by means of the transmitter according to the determined at least one transmitted beam until the optimal transmitted beam is determined.
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公开(公告)号：US10742292B2
公开(公告)日：2020-08-11
申请号：US16084218
申请日：2017-02-24
Inventor： Wenhong Chen , Qiubin Gao , Hui Li , Runhua Chen , Tamrakar Rakesh
IPC: H04W4/00 , H04B7/06 , H04B7/0456 , H04W72/04
Abstract: Disclosed are a channel state information (CSI) feedback method, a precoding method, and an apparatus. In the present invention, a terminal obtains, according to the number of downlink transport layers, a first precoding matrix set that is located on a first subband and that is corresponding to the number of the downlink transport layers, the first precoding matrix set comprising one or more precoding matrices, and a physical resource in the first subband being corresponding to a precoding matrix in the first precoding matrix set; the terminal determines a channel quality indicator (CQI) on a second subband according to downlink channel information and the first precoding matrix set on the first subband; and the terminal feeds back the CSI, the CSI comprising one or more of the following information: an RI used for indicating the number of the downlink transport layers, a PMI used for indicating the first precoding matrix set on the first subband and the CQI on the second subband. The technical solution disclosed in the resent invention can reduce signaling overheads of feeding back CSI by a terminal.
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