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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：US20210143952A1
公开(公告)日：2021-05-13
申请号：US16607433
申请日：2018-03-28
Inventor： Rakesh TAMRAKAR , Qiubin GAO , Hui LI
Abstract: Embodiments of the present disclosure provide a signal processing method and a signal processing device, which relate to the field of communication technology and used for the purpose of saving signaling resources. The signal processing method provided by embodiments of the present disclosure includes: transmitting a first indication message to a terminal device, wherein the first indication message is to trigger the terminal device to transmit feedback information on pilot signals; transmitting N downlink pilot signals to the terminal device, where N is an integer greater than or equal to 2, and the transmission manner of the N downlink pilot signals is semi-persistent transmission or aperiodic transmission, so that the terminal device, according to an acquired precoding manner of the downlink pilot signals and the first indication message, determines a feedback manner of the feedback information on the N downlink pilot signals and performs feedback, and wherein the feedback manner includes not feeding back or one-time feeding back of the feedback information on the N downlink pilot signals. In the embodiments of the present disclosure, the base station or the terminal device may not transmit feedback information on a plurality of pilot signals, or may one-time transmit feedback information on a plurality of pilot signals, thereby effectively saving signaling resources.
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13.发明申请公开(公告)号：US20200287687A1
公开(公告)日：2020-09-10
申请号：US16645413
申请日：2018-09-05
Inventor： Hui LI , Qiubin GAO , Rakesh TAMRAKAR , Runhua CHEN , Xin SU , Deshan MiAO , Qiuping HUANG
IPC: H04L5/00
Abstract: The present disclosure provides a reference signal transmission method, a reference signal transmission device, a base station and a user equipment. The transmission method of the present disclosure includes: implicitly or explicitly indicating to a user equipment (UE), position information of a target subcarrier for mapping a target phase tracking reference signal (PTRS) port, among subcarriers occupied by a target demodulation reference signal (DMRS) port. The target DMRS port is a DMRS port associated with the target PTRS port.
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公开(公告)号：US20200059958A1
公开(公告)日：2020-02-20
申请号：US16606172
申请日：2018-04-10
Inventor： Runhua CHEN , Qiubin GAO , Hui LI
Abstract: The message decoding method in accordance with embodiments of the present disclosure includes: receiving, by a receiving end device, a second message associated with a first message from a transmitting end device; determining, by the receiving end device, a target receiver parameter for decoding the first message in accordance with the second message; and decoding, by the receiving end device, the first message from the transmitting end device in accordance with the target receiver parameter.
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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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Patent Agency Ranking
16.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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17.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：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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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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