Patents by Inventor Junshi Chen
Junshi Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12055649Abstract: A method for estimating a position of a vehicle (100) relative to one or more radio transceivers (150). The method including the steps of; obtaining propagation delay data associated with radio transmission between a vehicle transceiver (110) included in the vehicle (100) and the one or more radio transceivers (150); obtaining vehicle motion data related to a trajectory of the vehicle (100); identifying one or more multipath components, MPC, in the propagation delay data, the MPC relates to a radio transmission propagation path between a fixed radio transceiver (150) and the vehicle transceiver (110); determining an MPC track for each identified MPC based on the vehicle motion data and on the propagation delay data, MPC track representing evolution of an MPC over time; and estimating the position of the vehicle (100) relative to the one or more radio transceivers (150) based on the MPC tracks.Type: GrantFiled: November 12, 2019Date of Patent: August 6, 2024Assignee: Arriver Software ABInventors: Oliver Brunnegard, Olof Eriksson, Meifang Zhu, Junshi Chen
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Patent number: 11506745Abstract: A method for vehicular self-positioning is executed by a positioning device in a vehicle. The positioning device computes a current estimated position of the vehicle as a function of local motion data obtained from a motion sensor in the vehicle, and operates an RF module in the vehicle to receive a reference signal from one or more base stations in an environment of the vehicle, the respective base station being configured for telecommunication and being part of a 3GPP infrastructure. The positioning device further processes the reference signal to determine measured values of at least one path parameter for a selected set of multipath components, and operates a positioning algorithm, e.g. SLAM, on at least the current estimated position and the measured values to calculate a current output position of the vehicle and position information for an origin of each of the multipath components.Type: GrantFiled: June 1, 2018Date of Patent: November 22, 2022Assignee: TERRANET ABInventors: Junshi Chen, Meifang Zhu, Fredrik Tufvesson
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Publication number: 20220003832Abstract: A method for estimating a position of a vehicle (100) relative to one or more radio transceivers (150). The method including the steps of; obtaining propagation delay data associated with radio transmission between a vehicle transceiver (110) included in the vehicle (100) and the one or more radio transceivers (150); obtaining vehicle motion data related to a trajectory of the vehicle (100); identifying one or more multipath components, MPC, in the propagation delay data, the MPC relates to a radio transmission propagation path between a fixed radio transceiver (150) and the vehicle transceiver (110); determining an MPC track for each identified MPC based on the vehicle motion data and on the propagation delay data, MPC track representing evolution of an MPC over time; and estimating the position of the vehicle (100) relative to the one or more radio transceivers (150) based on the MPC tracks.Type: ApplicationFiled: November 12, 2019Publication date: January 6, 2022Applicant: VEONEER SWEDEN ABInventors: OLIVER BRUNNEGARD, OLOF ERIKSSON, MEIFANG ZHU, JUNSHI CHEN
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Publication number: 20200166601Abstract: A method for vehicular self-positioning is executed by a positioning device in a vehicle. The positioning device computes a current estimated position of the vehicle as a function of local motion data obtained from a motion sensor in the vehicle, and operates an RF module in the vehicle to receive a reference signal from one or more base stations in an environment of the vehicle, the respective base station being configured for telecommunication and being part of a 3GPP infrastructure. The positioning device further processes the reference signal to determine measured values of at least one path parameter for a selected set of multipath components, and operates a positioning algorithm, e.g. SLAM, on at least the current estimated position and the measured values to calculate a current output position of the vehicle and position information for an origin of each of the multipath components.Type: ApplicationFiled: June 1, 2018Publication date: May 28, 2020Applicant: TERRANET ABInventors: Junshi CHEN, Meifang ZHU, Fredrik TUFVESSON
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Publication number: 20190109737Abstract: The application relates to a receiving device for a communication system, where the receiving device includes a receiver configured to receive a Multiple-Input and Multiple-Output (MIMO) communication signal including a plurality of transmit symbols belonging to at least one complex-valued symbol constellation, a processing circuit configured to affine-transform the at least one complex-valued symbol constellation to obtain at least one affine-transformed complex-valued symbol constellation, compute a decision metric; based on the at least one affine-transformed complex-valued symbol constellation, detect the transmit symbols based on the computed decision metric.Type: ApplicationFiled: December 7, 2018Publication date: April 11, 2019Inventors: Chaitanya Tumula, Alberto Diego Jimenez Feltstrom, Junshi Chen, Peter Almers, Sergei Semenov
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Publication number: 20180145859Abstract: A signal determination unit for determining one or more reduction signals for transmission on one or more reduction subcarriers of an OFDM signal, wherein the signal determination unit comprises an amplitude determination unit configured to determine a real part and an imaginary part of a target reduction amplitude of the one or more reduction signals.Type: ApplicationFiled: January 3, 2018Publication date: May 24, 2018Inventors: Baicheng Xu, Peter Almers, Jianjun Chen, Junshi Chen
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Publication number: 20180083733Abstract: A receiving device including a receiver configured to receive a communication signal (CS) in a current time frame, and a processor configured to determine a set of candidate Control Channels (CCHs), determine a decoding order for the candidate CCHs in the set, decode at least one candidate CCH in the set according to the decoding order, compute a possible Radio Network Temporary Identifier (RNTI) for the decoded candidate CCH, compute a metric value (MV) for the decoded candidate CCH, the MV provides an indication when the decoded candidate CCH might be an actual CCH, determine when the decoded candidate CCH is an actual CCH based on the computed possible RNTI and the MV, derive control information (CI) from the decoded candidate CCH when the decoded candidate CCH is determined as an actual CCH, and cancel or suppress interference in the CS based on the derived CI.Type: ApplicationFiled: November 27, 2017Publication date: March 22, 2018Inventors: Jianjun Chen, Fredrik Rusek, Junshi Chen, Peter Almers, Baicheng Xu
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Patent number: 8818313Abstract: The present invention relates to the field of communication technologies and discloses a method and an apparatus for auto gain control (AGC) in a radio receiver, which can ensure that a radio frequency device, an analog device, and various nodes in a digital domain are non-saturated and that useful signal power is adjusted to a certain power level. According to the present invention, total signal power on an air interface is subtracted from a preset first target power to obtain an analog auto gain control (AAGC) gain, and then a second target power is subtracted from an interference signal power in a digital baseband to obtain a digital auto gain control (DAGC) gain.Type: GrantFiled: August 12, 2013Date of Patent: August 26, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Jianhua Qin, Junshi Chen, Yunbao Zeng
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Publication number: 20130324065Abstract: The present invention relates to the field of communication technologies and discloses a method and an apparatus for auto gain control (AGC) in a radio receiver, which can ensure that a radio frequency device, an analog device, and various nodes in a digital domain are non-saturated and that useful signal power is adjusted to a certain power level. According to the present invention, total signal power on an air interface is subtracted from a preset first target power to obtain an analog auto gain control (AAGC) gain, and then a second target power is subtracted from an interference signal power in a digital baseband to obtain a digital auto gain control (DAGC) gain.Type: ApplicationFiled: August 12, 2013Publication date: December 5, 2013Applicant: Huawei Technologies Co., Ltd.Inventors: Jianhua Qin, Junshi Chen, Yunbao Zeng