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公开(公告)号：US20190007119A1
公开(公告)日：2019-01-03
申请号：US16067122
申请日：2016-11-01
Inventor： Xin SU , Yang SONG , Chuanjun LI
IPC: H04B7/06 , H04B7/0456
CPC classification number: H04B7/0639 , H04B7/04 , H04B7/0417 , H04B7/0456
Abstract: Provided are a method and device for uplink information feedback and downlink data transmission, used, when the speed of motion of a terminal is high, for solving the problem of CSI information reported by the terminal being insufficient to track changes on the channel, such that data transmission carried out on the basis of the channel state information reported by the terminal causes seriously degraded performance. The method comprises: a base station obtaining a precoding matrix of a terminal, and an l-th precoding matrix set of L precoding matrix sets corresponding to said precoding matrix; each precoding matrix set of said L precoding matrix sets containing at least one precoding matrix; said at least one precoding matrix originating from a preset codebook, wherein l≤L and L is a positive integer; according to the precoding matrix contained in the obtained l-th precoding matrix set, the base station sending downlink data to the terminal. By means of the precoding matrix set, a relatively wide beam is formed to cover the user, thus guaranteeing downlink transmission for the terminal when it is moving at high speed, improving the reliability of downlink transmission.
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12.发明申请公开(公告)号：US20180062715A1
公开(公告)日：2018-03-01
申请号：US15557948
申请日：2016-03-01
Inventor： Chuanjun LI , Xin SU
IPC: H04B7/04 , H01Q3/38 , H04B7/0417 , H04L5/00
CPC classification number: H04B7/0469 , H01Q3/00 , H01Q3/38 , H04B7/04 , H04B7/0413 , H04B7/0417 , H04B7/0632 , H04B7/0695 , H04L1/06 , H04L5/0023 , H04L5/0057
Abstract: The present disclosure provides a massive digital-analog hybrid antenna, a CSI feedback method and a CSI feedback device. The CSI feedback method includes: at an analog precoding matrix selection stage of an analog precoding period, transmitting, by a base station, a precoded downlink reference signal and receiving first-stage CSI and measurement information fed back by a UE on a subframe corresponding to each time offset; selecting, by the base station, a target analog precoding matrix in accordance with performance measurement values of analog precoding matrices corresponding to all P time offsets; and at a target analog precoding matrix using stage of the analog precoding period, transmitting, by the base station, the downlink reference signal precoded by the target analog precoding matrix and receive second-stage CSI fed back by the UE on each predetermined subframe.
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公开(公告)号：US20200059277A1
公开(公告)日：2020-02-20
申请号：US16476507
申请日：2018-02-07
Inventor： Xin SU , Qiubin GAO , Chuanjun LI , Mengjun WANG , Rakesh TAMRAKAR , Runhua CHEN , Hui LI , Qiuping HUANG
IPC: H04B7/0456 , H04B7/06 , H04L5/00 , H04L5/10 , H04L1/00
Abstract: The present disclosure provides a data transmission control method, a network side device and a terminal side device. The data transmission control method includes: mapping, by a network side device, a codeword to at least one data layer; mapping, by the network side device, the at least one data layer to at least one QCL group, the QCL group being an antenna port group established in accordance with a QCL relationship among antenna ports; and performing, by the network side device, data transmission in accordance with the QCL group. According to the present disclosure, it is able to perform the data transmission through multi-array antennae.
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14.发明申请公开(公告)号：US20200036417A1
公开(公告)日：2020-01-30
申请号：US16461087
申请日：2017-11-10
Inventor： Rakesh TAMRAKAR , Qiubin GAO , Hui LI , Runhua CHEN , Chuanjun LI , Mengjun WANG , Xin SU , Qiuping HUANG
IPC: H04B7/0456 , H04B7/06 , H04L5/00
Abstract: A method for indicating precoding information, user equipment (UE) and an access network entity are provided according to the disclosure. The method includes: receiving, by a user equipment (UE), a control signaling transmitted by an access network entity; determining, by the UE, a multilevel codebook index in response to the control signaling; and determining, by the UE, a target precoding matrix based on the multilevel codebook index and a multilevel codebook obtained in advance.
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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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Patent Agency Ranking
16.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：US20190013851A1
公开(公告)日：2019-01-10
申请号：US16067123
申请日：2017-01-24
Inventor： Xin SU , Chuanjun LI , Yang SONG
IPC: H04B7/06 , H04B7/0413 , H04W4/06
Abstract: Disclosed are a broadcast information transmission method and device. A base station uses preset beamforming weight vectors to perform beamforming on a physical broadcast channel. A plurality of preset beamforming weight vectors are used and sequentially selected by the base station to perform beamforming on the physical broadcast channel. Since a plurality of preset beamforming weight vectors are used, a coverage effect on a sector is therefore improved in comparison with a single beam. In addition, the preset beamforming weight vectors are sequentially selected by the base station to perform beamforming on the physical broadcast channel, and broadcast information transmitted by the physical broadcast channel therefore achieves effective coverage.
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公开(公告)号：US20180367206A1
公开(公告)日：2018-12-20
申请号：US16066506
申请日：2016-09-12
Inventor： Xin SU , Yang SONG , Chuanjun LI
Abstract: Disclosed are an analog channel measurement method and a base station, for use in implementing measurement of an analog channel in a digital-analog hybrid beamforming system. The method is such that: a base station receives a reference signal, where the base station comprises a digital-analog hybrid beamforming antenna system, and the digital-analog hybrid beamforming antenna system comprises digital channels and analog channels; the base station selects an analog channel group from an analog channel group set on the basis of the reference signal and employs the reference signal in measuring each analog channel of the selected analog channel group, where the number of analog channels that each analog channel group comprises is equal to the number of digital channels in the digital-analog hybrid beamforming antenna system.
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20.发明申请公开(公告)号：US20170180064A1
公开(公告)日：2017-06-22
申请号：US15116825
申请日：2015-02-10
Inventor： Xin SU , Chuanjun LI
IPC: H04B17/318 , H04B7/06
CPC classification number: H04B17/318 , H04B7/0413 , H04B7/0621 , H04L1/20 , H04L5/005 , Y02D70/00 , Y02D70/1262 , Y02D70/1264 , Y02D70/444
Abstract: The present disclosure provides a CSI measurement method and a CSI measurement device. The CSI measurement method includes steps of: receiving channel state measurement information from a network side, the channel state measurement information including a CRS from a set of CRS ports corresponding to vertical beams having an identical Vshift parameter mode in a vertical dimension, the Vshift parameter mode being configured to determine shift values of CRS patterns in different vertical beams in the vertical dimension in a frequency domain; and performing CSI measurement in accordance with the channel state measurement information.
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