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公开(公告)号：US20180227030A1
公开(公告)日：2018-08-09
申请号：US15749122
申请日：2016-07-21
Inventor： Wenhong CHEN , Shanzhi CHEN , Qiubin GAO , Runhua CHEN , Tamrakar RAKESH , Hui LI
CPC classification number: H04B7/0626 , H04B7/0639 , H04B7/0645 , H04L1/00 , H04L1/0026 , H04L1/0027 , H04L5/0057
Abstract: The present application provides a channel state information (CSI) feedback and receiving method and device. The CSI feedback method by a UE comprises: determining, according to an indication of a base station, at least one CSI feedback configuration group configured by the base station, wherein each CSI feedback configuration group comprises at least one CSI feedback configuration; and upon determination of a need to report CSI, reporting, via a PUCCH or PUSCH, to the base station CSI acquired based on a first CSI feedback configuration, wherein the first CSI feedback configuration is a CSI feedback configuration determined, according to location information of a CSI feedback configuration in the most recent report or location information of a CSI feedback configuration indicated by the base station, from a corresponding CSI feedback configuration group by the UE. The present application supports independent reporting of location information and corresponding CSI, thus improving the detection performance of such information, and further supports a base station to acquire CSI corresponding to a specified CSI feedback configuration, thus enabling more flexible downlink scheduling and transmission.
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公开(公告)号：US20210376976A1
公开(公告)日：2021-12-02
申请号：US16637752
申请日：2018-06-28
Inventor： Hui LI , Tamrakar RAKESH , Qiubin GAO , Runhua CHEN , Xin SU
Abstract: Embodiments of the present application provide a pilot configuration method, a channel measurement method, and a communication device, for use in resolving the technical problem in an NR system that a terminal cannot determine the location of a time-frequency resource occupied by a CSI-RS. The pilot configuration method comprises: a base station determines configuration information of CSI-RSs of N ports according to a predefined CSI-RS configuration pattern of a system, wherein the CSI-RS configuration pattern is used for representing configurations for time-frequency locations of resource elements (REs) of the CSI-RSs of different ports in a time slot when at least one OFDM symbol in a PRB is used as a time domain unit, the configuration information at least comprises the number of ports and an index parameter, and the index parameter is used for indicating the time-frequency location of the RE of the CSI-RS of each of the N ports in the time slot; the base station transmits the configuration information to a terminal connected to the base station by signaling, and transmits the CSI-RSs according to the configuration information, so that the terminal determines the time-frequency locations of the REs of the CSI-RSs in the time slot according to the configuration information and the predefined CSI-RS configuration pattern of the system, and performs channel measurement by using the CSI-RSs at the time-frequency locations.
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公开(公告)号：US20200028560A1
公开(公告)日：2020-01-23
申请号：US16337961
申请日：2017-07-31
Inventor： Qiubin GAO , Runhua CHEN , Tamrakar RAKESH , Xin SU , Chuanjun LI
IPC: H04B7/06 , H04W16/28 , H04B7/0417 , H04B7/08 , H04W72/04
Abstract: Disclosed in the present application are an antenna beam management method and related device, used for solving the problem in current large-scale antenna technology wherein the overhead of beam management control signaling is large. The method is: a terminal sending related information of a downlink beam of the terminal to a base station so that the base station determines a first downlink sending beam on the basis of the related information of the downlink beam; the terminal receiving notification information related to the first downlink sending beam send by the base station, the notification information comprising indication information that is used by the terminal to determine at least one first downlink receiving beam; the terminal determining the at least one first downlink receiving beam on the basis of the notification information; and the terminal receiving a downlink signal on the basis of the at least one first downlink receiving beam.
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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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Patent Agency Ranking
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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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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公开(公告)号：US20190297560A1
公开(公告)日：2019-09-26
申请号：US16317829
申请日：2017-06-08
Inventor： Qiubin GAO , Runhua CHEN , Hui LI , Tamrakar RAKESH , Qiuping HUANG , Yu YANG , Yang SONG , Xin SU , Mengjun WANG , Chuanjun LI
Abstract: Disclosed are a method and apparatus for transmitting an initial access signal, thus solving the existing problem wherein transmitting and detecting of synchronization signals cannot be applied to large-scale network coverage of a future communication system. The method comprises: determining at least one to-be-transmitted identification information of a synchronization block, the synchronization block comprising at least two components for transmitting an initial access signal, and different components occupying different time-frequency resources of the synchronization block; determining an initial access signal transmitted by each component in the synchronization block according to the identification information; and determining a time-frequency resource occupied by each component in the synchronization block and transmitting the initial access signal of the component on the time-frequency resource occupied by each component.
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公开(公告)号：US20190229869A1
公开(公告)日：2019-07-25
申请号：US16337936
申请日：2017-09-27
Inventor： Hui LI , Runhua CHEN , Qiubin GAO , Tamrakar RAKESH , Qiuping HUANG
Abstract: Disclosed are a reference signal mapping method and device, used for realizing a CSI-RS mapping of 16 or more ports, so as to realize a CSI-RS transmission of 16 or more ports. The method comprises: according to an N port reference signal pattern, determining that a channel state information reference signal (CSI-RS) is mapped on a resource unit RE, N being an integer greater than 16, wherein, an RE position, having one N port CSI-RS of the N port reference signal pattern mapped thereto, is determined according to an RE position having a CSI-RS in a plurality of groups of 8 port reference signal patterns mapped thereto, each S port in the N port is multiplexed with S code words of 8 code words using an 8-bit orthogonal spreading code, and the 8 port reference signal pattern is an 8 port CSI-RS pattern defined by 3GPP Rel-13; and performing resource mapping on the CSI-RS according to the determined RE.
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20.发明申请公开(公告)号：US20180241445A1
公开(公告)日：2018-08-23
申请号：US15755090
申请日：2016-07-19
Inventor： Hui LI , Shanzhi CHEN , Qiubin GAO , Runhua CHEN , Wenhong CHEN , Tamrakar RAKESH
IPC: H04B7/0456 , 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.
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