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公开(公告)号：US10778311B2
公开(公告)日：2020-09-15
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 , H04L1/06 , H04B7/04 , 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, precoding matrixes needed for open-loop AMMO 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：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：US10778292B2
公开(公告)日：2020-09-15
申请号：US16082908
申请日：2017-02-21
Inventor： Qiubin Gao , Wenhong Chen , Hui Li , Runhua Chen , Rakesh Tamrakar
IPC: H04B7/04 , H04B7/0417 , H04B7/0456 , H04B7/06
Abstract: The present application provides a method and a device for transmitting feedback information. The method includes: determining, by a transmitting terminal, a first code book in accordance with a channel measurement result, precoding matrices included in the first code book being obtained through transformation of a same construction matrix; calculating, by the transmitting terminal, to obtain a first CQI in accordance with all or part of the precoding matrices in the first code book; and transmitting, by the transmitting terminal, first indication information for indicating the first code book and second indication information for indicating the first CQI to a receiving terminal.
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公开(公告)号：US10735158B2
公开(公告)日：2020-08-04
申请号：US15747753
申请日：2016-06-20
Inventor： Rakesh Tamrakar , Qiubin Gao , Runhua Chen , Wenhong Chen , Hui Li
Abstract: A reference signal mapping method and a reference signal mapping device are provided. The reference signal mapping method includes steps of: determining a position of a RE to which a CSI-RS has been mapped in accordance with an N-port reference signal pattern, N being equal to 12 or 16; and performing a resource mapping operation on the CSI-RS in accordance with the determined position of the RE. The position of the RE to which the CSI-RS has been mapped in the N-port reference signal pattern being determined in accordance with a position of the RE to which the CSI-RS has been mapped in one or more of a 2-port reference signal pattern, a 4-port reference signal pattern and an 8-port reference signal pattern. As a result, it is able to achieve the 12-port or 16-port CSI-RS mapping, thereby to achieve the 12-port or 16-port CSI-RS transmission.
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公开(公告)号：US10651997B2
公开(公告)日：2020-05-12
申请号：US15759513
申请日：2016-06-14
Inventor： Rakesh Tamrakar , Runhua Chen , Qiubin Gao , Wenhong Chen , Hui Li
Abstract: The present disclosure provides in some embodiments pilot signal configuration methods and pilot signal configuration devices. The pilot signal configuration method includes steps of: determining configuration information about a pilot signal to be transmitted within a special downlink subframe for a UE; and transmitting the configuration information to the UE. According to some embodiments of the present disclosure, it is able to achieve the configuration of the pilot signal to be transmitted within the special downlink subframe.
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Patent Agency Ranking
公开(公告)号：US10205500B2
公开(公告)日：2019-02-12
申请号：US15751460
申请日：2016-08-08
Inventor： Hui Li , Qiubin Gao , Runhua Chen , Wenhong Chen , Rakesh Tamrakar
IPC: H04B7/04 , H04B7/0456 , H04B7/06
Abstract: A precoding matrix determination method and a precoding matrix determination device are provided. The precoding matrix determination method includes: dividing each of the groups of vertical-dimension beams into a plurality of subgroups of vertical-dimension beams, and dividing each of the groups of horizontal-dimension beams into a plurality of subgroups of horizontal-dimension beams; determining a first stage codebook in accordance with a Kronecker product of each subgroup of vertical-dimension beams acquired by dividing each of the groups of vertical-dimension beams and each subgroup of horizontal-dimension beams acquired by dividing each of the groups of horizontal-dimension beams; and selecting a plurality of columns of beams from the determined first stage codebook using a second stage codebook, and performing phase adjustment to determine a precoding matrix.
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公开(公告)号：US11664876B2
公开(公告)日：2023-05-30
申请号：US16324880
申请日：2017-08-03
Inventor： Qiuping Huang , Qiubin Gao , Runhua Chen , Hui Li , Rakesh Tamrakar , Yang Song , Xin Su , Yu Yang , Mengjun Wang , Chuanjun Li
IPC: H04B7/08 , H04B7/0408 , H04B7/06
CPC classification number: H04B7/0851 , H04B7/0408 , H04B7/0695 , H04B7/088
Abstract: A method and a device for transmitting downlink reception beam training signals are provided. The method at the second device side includes: receiving a downlink reception beam training trigger notification message sent by a first device; receiving downlink reception beam training signals sent by the first device, based on the downlink reception beam training trigger notification message; and performing a downlink reception beam training based on the downlink reception beam training signals. The method at the first device side includes: sending a downlink reception beam training trigger notification message to a second device when determining that a downlink reception beam training is to be performed for the second device, and sending downlink reception beam training signals to the second device after the downlink reception beam training trigger notification message is sent to the second device.
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公开(公告)号：US11304187B2
公开(公告)日：2022-04-12
申请号：US16622887
申请日：2018-05-30
Inventor： Runhua Chen , Qiubin Gao , Rakesh Tamrakar , Hui Li , Qiuping Huang , Xin Su
IPC: H04W72/04
Abstract: Embodiments of the present disclosure provide a data transmission method, a data transmission device, a network side device and UE. The data transmission method is applied to a first device and includes: transmitting Uplink (UL) Sounding Reference Signal (SRS) resource configuration information to a second device, where the SRS resource configuration information indicates K SRS resources; receiving an SRS signal transmitted from the second device according to the SRS resource configuration information; determining an SRS Resource Indicator (SRI), where the SRI indicates L SRS resources in the K SRS resources, L is an integer that is larger than or equals 1 and L is less than or equals K; and transmitting the SRI to the second device.
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公开(公告)号：US11063650B2
公开(公告)日：2021-07-13
申请号：US16623375
申请日：2018-04-13
Inventor： Tamrakar Rakesh , Qiubin Gao , Xin Su , Hui Li , Runhua Chen , Qiuping Huang
Abstract: Disclosed by the present invention are a method, a network side device and a terminal for indicating a pilot precoding mode, wherein the method comprises: The network side device assigns at least one group of pilots to the terminal, wherein each group of pilots comprises at least one pilot. The network side device determines pilot precoding indication information for the at least one group of pilots, wherein the pilot precoding indication information is used to characterize whether each pilot in each group of pilots uses the same precoding matrix. The network side device sends the at least one group of pilots and the pilot precoding indication information to the terminal. The present invention may solve the technical problem not disclosed in prior art of a solution for how a base station or a terminal specifically indicates a pilot precoding mode, so as to improve the control efficiency of a network side device.
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公开(公告)号：US10979923B2
公开(公告)日：2021-04-13
申请号：US15575809
申请日：2016-04-13
Inventor： Wenhong Chen , Qiubin Gao , Runhua Chen , Hui Li , Rakesh Tamrakar
Abstract: The present disclosure provides a CSI acquisition method. A network side device indicates a CSI feedback configuration group for aperiodic CSI feedback to a UE, and transmits DCI to the UE, the DCI configured to indicate the UE to perform the aperiodic feedback in accordance with an optimum CSI feedback configuration in the CSI feedback configuration group.
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