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公开(公告)号：US20200280420A1
公开(公告)日：2020-09-03
申请号：US16645524
申请日：2018-06-28
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.
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2.发明申请公开(公告)号：US20200244322A1
公开(公告)日：2020-07-30
申请号：US15754954
申请日：2016-07-14
Inventor： Hui LI , Qiubin GAO , Runhua CHEN , Wenhong CHEN , Tamrakar RAKESH
IPC: H04B7/0456 , H04B7/06
Abstract: Disclosed are methods and apparatuses for transmitting coding indication information and determining a pre-coding 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: user equipment determines first pre-coding indication information and second pre-coding indication information, the first pre-coding indication information corresponding to a first-stage pre-coding matrix, the first-stage pre-coding matrix comprising beam vectors in different polarizations, the second pre-coding indication information corresponding to a second-stage pre-coding matrix, the second-stage pre-coding matrix being used for performing amplitude weighting and phase adjusting on all beam vectors in each polarization in the first-stage pre-coding matrix, and the first-stage pre-coding matrix and the second-stage pre-coding matrix being used for generating a pre-coding matrix. Amplitude weighting and phase adjusting are performed on all beam vectors in each polarization in a first-stage pre-coding matrix, so that the resolution of a pre-coding matrix is flexibly adjusted, and the system performance is improved.
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公开(公告)号：US20180331744A1
公开(公告)日：2018-11-15
申请号：US15774268
申请日：2016-10-26
Inventor： Qiubin GAO , Shanzhi CHEN , Runhua CHEN , Wenhong CHEN , Hui LI , Tamrakar RAKESH , Shaohui SUN
IPC: H04B7/06 , H04B7/0417 , H04B7/0456
Abstract: Disclosed are channel state information feedback and data transmission method and apparatus. The method comprises: determining a first codebook on a base station side, the first codebook being a set composed of precoding matrixes; determining a first codebook on a terminal side, the first codebook being a set composed of precoding matrixes; calculating channel state information according to the first codebooks; and feeding back the channel state information to a base station. Data transmission is performed on the terminal on the base station side, and in the data transmission process, some or all of the precoding matrixes in the first codebooks are utilized to perform processing, over a resource allocated to a terminal, on data to be transmitted. By using the present application, preceding matrixes needed for open-loop MIMO calculation can be determined, traversing of whole space is avoided, difficulties in system design and implementation are reduced, and the system performance is improved.
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公开(公告)号：US20200244334A1
公开(公告)日：2020-07-30
申请号：US16619082
申请日：2018-05-15
Inventor： Qiuping HUANG , Qiubin GAO , Runhua CHEN , Tamrakar RAKESH , Xin SU , Hui LI , Mengjun WANG , Chuanjun LI
Abstract: Disclosed are a beam management method, a network device and a terminal. The method comprises: the network device allocates an SRS source to a terminal; and the network device transmits indication information to the terminal, wherein the indication information is used for indicating the terminal to select a transmission beam used for transmitting SRS on the SRS source, so as to manage the transmission beam of the terminal and a receiving beam of a base station more flexibly and effectively, to achieve scanning of the transmission beam of the terminal and/or the receiving beam of the base station.
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公开(公告)号：US20180205439A1
公开(公告)日：2018-07-19
申请号：US15745122
申请日：2016-07-19
Inventor： Wenhong CHEN , Qiubin GAO , Hui LI , Tamrakar RAKESH , Runhua CHEN
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.
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Patent Agency Ranking
公开(公告)号：US20180069613A1
公开(公告)日：2018-03-08
申请号：US15563464
申请日：2016-02-03
Inventor： Hui LI , Qiubin GAO , Runhua CHEN , Tamrakar RAKESH , Wenhong CHEN
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.
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公开(公告)号：US20210083754A1
公开(公告)日：2021-03-18
申请号：US16324902
申请日：2017-06-07
Inventor： Yang SONG , Qiubin GAO , Runhua CHEN , Tamrakar RAKESH , Xin SU , Chuanjun LI , Mengjun WANG , Yu YANG , Hui LI , Qiuping HUANG
IPC: H04B7/08 , H04B7/0417 , H04B7/06
Abstract: The present invention relates to the technical field of wireless communications, and in particular, to a beam training method and device, for use in resolving the problems in the prior art of excessive time-consuming of a beam training process, large overhead of training signals, and relatively low efficiency. According to embodiments of the present invention, a transmit device sends beam training signals in two times. The first sending of a transmit beam training signal is for a receive device to select a transmit beam using a selected receive beam and report the transmit beam. The second sending is that the transmit device sends a receive beam training signal according to the transmit beam information report of the receive device, so as to train the received beam of the receive device. According to the embodiments of the present invention, an interactive beam training method is used to gradually search for the best transmit beam and receive beam, thereby avoiding completing beam training all at once, reducing beam training time and overhead, and improving efficiency.
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公开(公告)号：US20200028549A1
公开(公告)日：2020-01-23
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 , H04W72/04 , H04B7/0408 , H04B7/06 , H04L5/00
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：US20200028547A1
公开(公告)日：2020-01-23
申请号：US16499260
申请日：2018-03-21
Inventor： Qiubin GAO , Runhua CHEN , Tamrakar RAKESH
IPC: H04B7/0417 , H04B7/0408 , H04W72/04
Abstract: Disclosed in the present invention are a method and device for acquiring and feeding back transmission beam information, comprising: a base station transmits, to a terminal, reference signals and information related to reference signal set division by using downlink transmission beams, wherein the base station transmits a reference signal for each downlink transmission beam, the reference signal of each beam is issued after being formed by using a beam forming weight corresponding to the beam, and the reference signals transmitted using the downlink transmission beams from the same beam group are divided into a reference signal set; the terminal selects Q reference signals from the received reference signals according to the reception quality and according to the information related to reference signal set division, selects a downlink transmission beam combination, and reports to the base station; and the base station determines a downlink transmission beam for transmitting data to the terminal according to a proposal. The present invention may enable the terminal and the base station to obtain more accurate beam combination information and support multi-beam transmission.
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公开(公告)号：US20190074884A1
公开(公告)日：2019-03-07
申请号：US16084218
申请日：2017-02-24
Inventor： Wenhong CHEN , Qiubin GAO , Hui LI , Runhua CHEN , Tamrakar RAKESH
IPC: H04B7/06 , H04W72/04 , H04B7/0456
CPC classification number: H04B7/0626 , H04B7/0456 , H04B7/0478 , H04B7/0486 , H04B7/0632 , H04B7/0639 , 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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