Patents by Inventor Eddy Shi-Ning Hum
Eddy Shi-Ning Hum 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: 11095327Abstract: Techniques and architectures for multi-stage cancellation of self-interference (SI) and joint cancellation of mutual-interference (MI) and residual SI in signals received by devices of a full-duplex multi-cell network are disclosed. In various examples, channel estimations and interference cancellation operations are performed utilizing multiple orthogonal training signals transmitted by network devices during a common over-the-air training period. Training signals derived from the orthogonal training signals during transmission are utilized to generate SI estimation information and perform at least a first SI cancellation operation on a received signal that includes at least first and second orthogonal training signals. The received signal and orthogonal training signals are then used to estimate a MI channel impulse response and a (residual) SI channel impulse response for use in joint MI/SI cancellation operations on further received signals.Type: GrantFiled: April 24, 2019Date of Patent: August 17, 2021Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Huan Wu, Eddy Shi-Ning Hum, Wan-Yi Shiu
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Patent number: 10531313Abstract: A method that comprises identifying a group of user equipment (UEs) in a radio access network, where the group includes a transmitting UE and a plurality of receiving UEs. The method further comprises sending control information including probe signal parameters to the transmitting UE and to the receiving UEs. The method also comprises receiving, from the receiving UEs, performance metrics relating to receipt of a probe signal sent by the transmitting UE based on the probe signal parameters. The method may be implemented by a scheduler. As such, based on the feedback received, the scheduler may carry out more judicious pairing of UEs for uplink and downlink transmission, which may be particularly suitable when the UEs communicate in half-duplex fashion.Type: GrantFiled: July 15, 2016Date of Patent: January 7, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Huan Wu, Eddy Shi-Ning Hum
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Publication number: 20190253089Abstract: Techniques and architectures for multi-stage cancellation of self-interference (SI) and joint cancellation of mutual-interference (MI) and residual SI in signals received by devices of a full-duplex multi-cell network are disclosed. In various examples, channel estimations and interference cancellation operations are performed utilizing multiple orthogonal training signals transmitted by network devices during a common over-the-air training period. Training signals derived from the orthogonal training signals during transmission are utilized to generate SI estimation information and perform at least a first SI cancellation operation on a received signal that includes at least first and second orthogonal training signals. The received signal and orthogonal training signals are then used to estimate a MI channel impulse response and a (residual) SI channel impulse response for use in joint MI/SI cancellation operations on further received signals.Type: ApplicationFiled: April 24, 2019Publication date: August 15, 2019Inventors: Huan WU, Eddy Shi-Ning HUM, Wan Yi SHIU
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Patent number: 10320431Abstract: Techniques and architectures for multi-stage cancellation of self-interference (SI) and joint cancellation of mutual-interference (MI) and residual SI in signals received by devices of a full-duplex multi-cell network are disclosed. In various examples, channel estimations and interference cancellation operations are performed utilizing multiple orthogonal training signals transmitted by network devices during a common over-the-air training period. Training signals derived from the orthogonal training signals during transmission are utilized to generate SI estimation information and perform at least a first SI cancellation operation on a received signal that includes at least first and second orthogonal training signals. The received signal and orthogonal training signals are then used to estimate a MI channel impulse response and a (residual) SI channel impulse response for use in joint MI/SI cancellation operations on further received signals.Type: GrantFiled: July 27, 2017Date of Patent: June 11, 2019Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Huan Wu, Eddy Shi Ning Hum, Wan Yi Shiu
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Patent number: 10205585Abstract: System and method embodiments are provided for analog cancellation for division free duplexing for radios using MIMO. In an embodiment, a system for minimizing transmitted signals from a transmitter appearing at a co-located receiver in a division free duplexing radio includes a transmitter to transmit an analog transmitted signal; an antenna; a circulator coupled to the transmitter and the antenna; a tuning algorithm component configured to receive a copy of the analog transmitted signal from the transmitter and a sampled analog received signal from a received signal path from the circulator, wherein the sampled analog received signal is sampled at a point in the received signal path before the analog received signal is provided to a receiver; and a multitap cancellation component configured to provide a cancellation signal to couple to the analog received signal such that an amount of the analog transmitted signal appearing at the receiver is reduced.Type: GrantFiled: September 25, 2014Date of Patent: February 12, 2019Assignee: Huawei Technologies Co., Ltd.Inventors: James Gary Griffiths, Wolfgang Oberhammer, Michael Moher, Eddy Shi-Ning Hum
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Publication number: 20190036559Abstract: Techniques and architectures for multi-stage cancellation of self-interference (SI) and joint cancellation of mutual-interference (MI) and residual SI in signals received by devices of a full-duplex multi-cell network are disclosed. In various examples, channel estimations and interference cancellation operations are performed utilizing multiple orthogonal training signals transmitted by network devices during a common over-the-air training period. Training signals derived from the orthogonal training signals during transmission are utilized to generate SI estimation information and perform at least a first SI cancellation operation on a received signal that includes at least first and second orthogonal training signals. The received signal and orthogonal training signals are then used to estimate a MI channel impulse response and a (residual) SI channel impulse response for use in joint MI/SI cancellation operations on further received signals.Type: ApplicationFiled: July 27, 2017Publication date: January 31, 2019Applicant: Huawei Technologies Co., Ltd.Inventors: Huan Wu, Eddy Shi Ning Hum, Wan Yi Shiu
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Patent number: 10033513Abstract: A network-wide interference cancellation scheme estimates channel impulse responses related to Self Interference and the Mutual Interference, then reduces both the Self Interference and the Mutual Interference in the receiver of an Full Duplex device. Full Duplex gains may be capitalized upon and translated into system gain. The scheme is based on an extended Multiple-Input-Multiple-Output (MIMO) treatment of the whole Full Duplex network. The network-wide interference cancellation may be seen to be feasible when a unique pilot signal design and training structure are in place network-wide.Type: GrantFiled: October 9, 2015Date of Patent: July 24, 2018Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Huan Wu, Eddy Shi-Ning Hum, Philippe A. Guillemette
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Publication number: 20180020364Abstract: A method that comprises identifying a group of user equipment (UEs) in a radio access network, where the group includes a transmitting UE and a plurality of receiving UEs. The method further comprises sending control information including probe signal parameters to the transmitting UE and to the receiving UEs. The method also comprises receiving, from the receiving UEs, performance metrics relating to receipt of a probe signal sent by the transmitting UE based on the probe signal parameters. The method may be implemented by a scheduler. As such, based on the feedback received, the scheduler may carry out more judicious pairing of UEs for uplink and downlink transmission, which may be particularly suitable when the UEs communicate in half-duplex fashion.Type: ApplicationFiled: July 15, 2016Publication date: January 18, 2018Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: HUAN WU, EDDY SHI-NING HUM
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Patent number: 9762299Abstract: A tapped delay line channel model may be employed to suppress the self-interference that is introduced, at a receiver input, by a signal at a transmitter output. The self-interference may be considered to have components introduced by the internal antenna subsystem of a full duplex MIMO transceiver.Type: GrantFiled: March 3, 2016Date of Patent: September 12, 2017Assignee: Huawei Technologies Canada Co., Ltd.Inventors: Tho Le-Ngoc, James Gary Griffiths, Eddy Shi-Ning Hum
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Publication number: 20170257152Abstract: A tapped delay line channel model may be employed to suppress the self-interference that is introduced, at a receiver input, by a signal at a transmitter output. The self-interference may be considered to have components introduced by the internal antenna subsystem of a full duplex MIMO transceiver.Type: ApplicationFiled: March 3, 2016Publication date: September 7, 2017Inventors: Tho Le-Ngoc, James Gary Griffiths, Eddy Shi-Ning Hum
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Patent number: 9748990Abstract: A method includes transmitting a training signal derived from a sequence, the training signal facilitates an estimation of a channel impulse response (CIR) for a communications channel between a transmit antenna of the device and a receive antenna of the device, estimating the CIR for the communications channel, and receiving signals corresponding to a first transmission at the receive antenna. The method also includes cancelling self-interference present in the received signals in accordance with the estimated CIR, the self-interference arising from a second transmission made by the transmit antenna of the device, thereby producing an interference canceled received signal, and processing the interference canceled received signal.Type: GrantFiled: February 9, 2015Date of Patent: August 29, 2017Assignee: Huawei Technologies Co., LTD.Inventors: Huan Wu, Eddy Shi-Ning Hum
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Patent number: 9705662Abstract: In one embodiment, a method for calibrating a full-duplex radio system includes transmitting, by a first radio transmitter, a first signal and receiving, by a first radio receiver, a first version of the first signal. The method also includes receiving, by a second radio receiver, a second version of the first signal and transmitting, by a second radio transmitter, a second signal. Additionally, the method includes receiving, by the first radio receiver, a received version of the second signal and determining a response from the second radio transmitter to the first radio receiver in accordance with the first version of the first signal, the second version of the first signal, and the received version of the second signal.Type: GrantFiled: August 15, 2014Date of Patent: July 11, 2017Assignee: Huawei Technologies Co., Ltd.Inventors: Michael Moher, Eddy Shi-Ning Hum
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Publication number: 20160315754Abstract: A network-wide interference cancellation scheme estimates channel impulse responses related to Self Interference and the Mutual Interference, then reduces both the Self Interference and the Mutual Interference in the receiver of an Full Duplex device. Full Duplex gains may be capitalized upon and translated into system gain. The scheme is based on an extended Multiple-Input-Multiple-Output (MIMO) treatment of the whole Full Duplex network. The network-wide interference cancellation may be seen to be feasible when a unique pilot signal design and training structure are in place network-wide.Type: ApplicationFiled: October 9, 2015Publication date: October 27, 2016Inventors: Huan Wu, Eddy Shi-Ning Hum, Philippe A. Guillemette
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Publication number: 20160233904Abstract: A method for transmitting a full-duplex frame includes scheduling a first flexible allocation resource of a frame as a first resource for a second device served by the first device, scheduling a second flexible allocation resource of the frame as a second resource for a third device served by the first device, and generating the frame including the flexible allocation resources and a first half-duplex training period configured to convey a first training signal, where the first half-duplex training period and the first training signal facilitate an estimation of a channel impulse response (CIR) of a communications channel between a transmit antenna of the first device and a receive antenna of the first device. The method also includes transmitting the frame, and simultaneously receiving the frame.Type: ApplicationFiled: February 9, 2015Publication date: August 11, 2016Inventors: Huan Wu, Eddy Shi-Ning Hum, Wan-Yi Shiu, Nanyuan Rao
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Publication number: 20160233903Abstract: A method includes transmitting a training signal derived from a sequence, the training signal facilitates an estimation of a channel impulse response (CIR) for a communications channel between a transmit antenna of the device and a receive antenna of the device, estimating the CIR for the communications channel, and receiving signals corresponding to a first transmission at the receive antenna. The method also includes cancelling self-interference present in the received signals in accordance with the estimated CIR, the self-interference arising from a second transmission made by the transmit antenna of the device, thereby producing an interference canceled received signal, and processing the interference canceled received signal.Type: ApplicationFiled: February 9, 2015Publication date: August 11, 2016Inventors: Huan Wu, Eddy Shi-Ning Hum
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Publication number: 20160105272Abstract: A system and method for leak suppression in a full duplex system is disclosed. In an embodiment, a system for wireless transmission and reception includes a circulator having a common port, an input port and an output port; a conjugate matching tuner coupled to the common port; and an antenna coupled to the conjugate matching tuner, an impedance of the antenna being conjugate matched to an impedance of the common port of the circulator by the conjugate matching tuner.Type: ApplicationFiled: October 13, 2015Publication date: April 14, 2016Inventors: James Gary Griffiths, Wolfgang Oberhammer, Huan Wu, Eddy Shi-Ning Hum
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Publication number: 20160094332Abstract: System and method embodiments are provided for analog cancellation for division free duplexing for radios using MIMO. In an embodiment, a system for minimizing transmitted signals from a transmitter appearing at a co-located receiver in a division free duplexing radio includes a transmitter to transmit an analog transmitted signal; an antenna; a circulator coupled to the transmitter and the antenna; a tuning algorithm component configured to receive a copy of the analog transmitted signal from the transmitter and a sampled analog received signal from a received signal path from the circulator, wherein the sampled analog received signal is sampled at a point in the received signal path before the analog received signal is provided to a receiver; and a multitap cancellation component configured to provide a cancellation signal to couple to the analog received signal such that an amount of the analog transmitted signal appearing at the receiver is reduced.Type: ApplicationFiled: September 25, 2014Publication date: March 31, 2016Inventors: James Gary Griffiths, Wolfgang Oberhammer, Michael Moher, Eddy Shi-Ning Hum
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Publication number: 20160050062Abstract: In one embodiment, a method for calibrating a full-duplex radio system includes transmitting, by a first radio transmitter, a first signal and receiving, by a first radio receiver, a first version of the first signal. The method also includes receiving, by a second radio receiver, a second version of the first signal and transmitting, by a second radio transmitter, a second signal. Additionally, the method includes receiving, by the first radio receiver, a received version of the second signal and determining a response from the second radio transmitter to the first radio receiver in accordance with the first version of the first signal, the second version of the first signal, and the received version of the second signal.Type: ApplicationFiled: August 15, 2014Publication date: February 18, 2016Inventors: Michael Moher, Eddy Shi-Ning Hum