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21.发明申请公开(公告)号：US20170338878A1
公开(公告)日：2017-11-23
申请号：US15527311
申请日：2015-09-28
Inventor： Qiubin GAO , Runhua CHEN , Hui LI , Rakesh TAMRAKAR
CPC classification number: H04B7/0626 , H04B7/024 , H04B7/0456 , H04B7/0621 , H04B7/0639 , H04B17/318 , H04B17/345 , H04L1/0026 , H04L1/06 , H04L5/0035 , H04L5/0048 , H04L5/0051 , H04L5/0057 , H04L5/0058 , H04L5/006 , H04L5/0073 , H04L25/021 , H04W24/10 , H04W72/082
Abstract: A CSI measurement method, a CSI acquisition method, a terminal and a network device are provided, to measure CSI. The terminal performs interference measurement to acquire initial interference measurement result, determine the CSI based on the initial interference measurement result and an interference measurement parameter configured by the network device, and then report the determined CSI to the network device. The interference measurement parameter is configured by the network device, so the interference measurement parameter configured by the network device is capable of reflecting an actual situation of interference information, and interference information acquired by the terminal based on the interference measurement parameter matches interference information for actual transmission in a better manner. As a result, it is able to improve a matching degree between the interference information acquired by the terminal and the interference information for the actual transmission, thereby to enable a network to select a more appropriate parameter for link adaptation.
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公开(公告)号：US20210218456A1
公开(公告)日：2021-07-15
申请号：US16081878
申请日：2017-02-21
Inventor： Hui LI , Quibin GAO , Runhua CHEN , Wenhong CHEN , Rakesh TAMRAKAR
IPC: H04B7/06 , H04B7/0456
Abstract: A CSI feedback method and a CSI feedback device are provided. The CSI feedback method includes: determining a first precoding matrix in a set of first precoding matrices, and determining a first precoding matrix index value corresponding to the first precoding matrix; determining a second precoding matrix in a set of second precoding matrices, and determining a second precoding matrix index value corresponding to the second precoding matrix, the second precoding matrix including a beam selection section for selecting beams from the beam groups for each antenna group and a phase adjustment section for adjusting phases among the plurality of antenna groups; and feeding back the first precoding matrix index value and the second precoding matrix index value to an access device, so as to enable the access device to select corresponding precoding matrices from the set of first precoding matrices and the set of second precoding matrix in accordance with the first precoding matrix index value and the second precoding matrix index value, and implement calculation on the selected precoding matrices to obtain a precoding matrix for data transmission.
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公开(公告)号：US20210126754A1
公开(公告)日：2021-04-29
申请号：US17045509
申请日：2019-03-28
Inventor： Ren Da , Fang-Chen CHENG , Hui LI , Qiubin GAO , Xueyuan GAO
Abstract: Disclosed are a method and device for transmitting a positioning reference signal. In the method, a base station maps, according to configuration information of a PRS, a PRS sequence to a time-frequency resource for sending a PRS; and the base station sends the configuration information of the PRS to a terminal, and sends the mapped PRS on the time-frequency resource for sending a PRS.
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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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25.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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Patent Agency Ranking
公开(公告)号：US20200213979A1
公开(公告)日：2020-07-02
申请号：US16622887
申请日：2018-05-30
Inventor： Runhua CHEN , Qiubln GAO , Rakesh TAMRAKAR , Hui LI , Qiupirtg 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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27.发明申请公开(公告)号：US20190044597A1
公开(公告)日：2019-02-07
申请号：US15760582
申请日：2016-08-31
Inventor： Rakesh TAMRAKAR , Qiubin GAO , Wenhong CHEN , Runhua CHEN , Hui LI
Abstract: A channel state information receiving method, a channel state information feedback method, a device, a base station and a terminal are provided. It is related to telecommunication field. The receiving method includes: obtaining group identifiers of groups into which multiple terminals having accessed to a base station are classified; transmitting a triggering signaling to one group of terminals having an identical group identifier; and receiving, on a pre-configured resource block, pieces of channel state information respectively fed back by the group of terminals having the identical group identifier in response to the triggering signaling. With the above technical solution, consumption of downlink signalings of the base station can be reduced and feedback efficiency of channel state information can be 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：US20180262245A1
公开(公告)日：2018-09-13
申请号：US15752576
申请日：2016-07-08
Inventor： Hui LI , Qiubin GAO , Runhua CHEN , Wenhong CHEN , Rakesh TAMRAKAR
Abstract: The present disclosure relates to the field of communication technology, and provides an information feedback method, an information feedback device and a UE. The information feedback method includes steps of: acquiring PMIs of multiple-level component precoding matrices of a precoding matrix for downlink data transmission; and feeding back the PMI of each of the multiple-level component precoding matrices of the precoding matrix to a base station individually, or feeding back the jointly encoded PMIs, each of which is the PMI of each of the multiple-level component precoding matrices of the precoding matrix, to the base station.
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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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