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公开(公告)号：US11743805B2
公开(公告)日：2023-08-29
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：US11419070B2
公开(公告)日：2022-08-16
申请号：US16323242
申请日：2017-07-17
Inventor： Rakesh Tamrakar , Runhua Chen , Qiubin Gao , Qiuping Huang , Hui Li , Chuanjun Li , Yang Song , Xin Su , Yu Yang , Mengjun Wang
Abstract: A method for acquiring system information, a method for transmitting system information, a terminal, a network reception and transmission node and a storage medium are provided. The method for acquiring the system information includes: receiving a synchronization signal transmitted from a network reception and transmission node, and acquiring feature information of the synchronization signal, node information of the network reception and transmission node and a correspondence between the feature information and a transmitting position of the system information; acquiring the transmitting position of the system information corresponding to the node information based on the feature information and the correspondence; and receiving, at the transmitting position of the system information, the system information transmitted from the network reception and transmission node.
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公开(公告)号：US11323170B2
公开(公告)日：2022-05-03
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：US11152983B2
公开(公告)日：2021-10-19
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 , H04L5/00 , H04B7/06 , H04L1/00 , H04L5/10
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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公开(公告)号：US11128423B2
公开(公告)日：2021-09-21
申请号：US16477135
申请日：2018-02-02
Inventor： Xin Su , Qiubin Gao , Tamrakar Rakesh , Runhua Chen , Hui Li , Chuanjun Li , Qiuping Huang , Mengjun Wang
IPC: H04B7/0456 , H04B7/06 , H04B7/08 , H04L5/00 , H04L25/02 , H04W8/24 , H04W24/10 , H04W72/04 , H04W88/02 , H04W88/08 , H04W88/12 , H04W92/10
Abstract: Disclosed are a beam forming and transmission method and a network device, for resolving the defects of limited flexibility and performance in prior art methods for improving the quality of channel estimation. The method comprises: a network side determining the configuration information of physical resource block (PRB) bundling parameters, the time domain configuration information of the configuration information of said PRB bundling parameters being configurable; the network side sending the configuration information of the PRB bundling parameters to a terminal so that after having received the configuration information of the PRB bundling parameters, the terminal uses a precoding mode corresponding to the configuration information of the PRB bundling parameters to perform channel estimation and demodulation.
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Patent Agency Ranking
公开(公告)号：US11005550B2
公开(公告)日：2021-05-11
申请号：US16623369
申请日：2018-05-15
Inventor： Qiuping Huang , Tamrakar Rakesh , Runhua Chen , Qiubin Gao , Xin Su , Hui Li , Mengjun Wang , Chuanjun Li
IPC: H04L12/26 , H04B7/06 , H04B7/0417 , H04B7/0456 , H04L5/00 , H04L25/02 , H04W72/04
Abstract: Embodiments of the present application provide a method and apparatus for transmitting downlink control information (DCI), for solving the technical problem that neither the existing protocol nor the communication system has a method for encoding sounding reference signal resource indication (SRI) and pre-coding matrix indication (TPMI) or rank indication (TRI) information. The method comprises: a network device determines the number of candidate values of preset indication information borne by a preset indication field in the downlink control information (DCI), the preset indication information comprising one of or a combination of two of the sounding reference signal resource indication (SRI) and pre-coding matrix indication (TPMI) or rank indication (TRI) information; the network device determines the length of the preset indication field according to the number of candidate values of the preset indication information, and encodes the preset indication information according to the length to generate the DCI; and the network device sends the DCI to the UE.
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公开(公告)号：US10778307B2
公开(公告)日：2020-09-15
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
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：US10554283B2
公开(公告)日：2020-02-04
申请号：US16067122
申请日：2016-11-01
Inventor： Xin Su , Yang Song , Chuanjun Li
IPC: H04B7/06 , H04B7/0456 , H04B7/04 , H04B7/0417
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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公开(公告)号：US10447360B2
公开(公告)日：2019-10-15
申请号：US15557948
申请日：2016-03-01
Inventor： Chuanjun Li , Xin Su
IPC: H04B7/04 , H04B7/0417 , H04L5/00 , H01Q3/38 , H04B7/0456 , H04L1/06 , H01Q3/00 , H04B7/0413 , H04B7/06
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：US10193609B2
公开(公告)日：2019-01-29
申请号：US15771079
申请日：2016-12-29
Inventor： Chuanjun Li , Xin Su , Yang Song
IPC: H04B7/06 , H04B7/0426 , H04L5/00 , H04B7/0456
Abstract: A method for feeding back CIS includes: dividing a plurality of antenna ports into a plurality of groups of antenna ports; configuring for each group a same intra-group codebook set consisting of a plurality of intra-group precoding matrices, allocating for each group a plurality of different reference signals corresponding to a same reference resource, and configuring for each antenna port in each group a precoded reference signal acquired after a precoding operation using the intra-group precoding matrices, the number of the reference resources corresponding to the number of the intra-group precoding matrices in the intra-group codebook set, and the number of the reference signals corresponding to each reference resource corresponding to the number of groups of inter-group antenna ports; transmitting the precoded reference signal to a UE via each antenna port; and receiving the CSI fed back by the UE after measurement on the reference signal.
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