Patents by Inventor Ruchen DUAN

Ruchen DUAN 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).

  • Publication number: 20210083807
    Abstract: A method of implementing a hybrid automatic repeat request (HARQ) process. The method includes: transmitting, by a transmitter to a receiver, an initial transmission of the HARQ process; receiving, by the transmitter from the receiver, receiver decoding capability information; setting, by the transmitter, a retransmission duration based on the receiver decoding capability information; and implementing, by the transmitter, a retransmission of the HARQ process based on the retransmission duration.
    Type: Application
    Filed: July 21, 2020
    Publication date: March 18, 2021
    Inventors: Ruchen Duan, Mostafa Sayed Roshdy Ibrahim, Wook Bong Lee, Srinivas Kandala, Ashok Ranganath
  • Publication number: 20210044321
    Abstract: A method and system for providing sub-band whitening are herein provided. According to one embodiment, a method estimating an interference whitening (IW) factor based on a legacy-long training field (LLTF) signal, updating the estimated IW factor during transmission of a data symbol, and scaling the data symbol based on the updated IW factor and the estimated IW factor.
    Type: Application
    Filed: October 25, 2019
    Publication date: February 11, 2021
    Inventors: Mostafa Sayed Roshdy Ibrahim, Ruchen Duan, Wook Bong Lee, Minki Ahn, Hyun Bae Jeon
  • Patent number: 10911096
    Abstract: A method and system for providing sub-band whitening are herein provided. According to one embodiment, a method estimating an interference whitening (IW) factor based on a legacy-long training field (LLTF) signal, updating the estimated IW factor during transmission of a data symbol, and scaling the data symbol based on the updated IW factor and the estimated IW factor.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: February 2, 2021
    Inventors: Mostafa Sayed Roshdy Ibrahim, Ruchen Duan, Wook Bong Lee, Minki Ahn, Hyun Bae Jeon
  • Publication number: 20210014006
    Abstract: A method of implementing a hybrid automatic repeat request (HARQ) process. The method includes generating a HARQ transmission that comprises one or more HARQ units by: determining a HARQ unit size of the one or more HARQ units; generating the one or more HARQ units by assigning to each respective HARQ unit, based on the HARQ unit size, at least a respective portion of a media access control (MAC) layer data unit; and generating a header for the HARQ transmission. The method further includes transmitting the HARQ transmission to a receiver. The one or more HARQ units are physical layer data units.
    Type: Application
    Filed: May 18, 2020
    Publication date: January 14, 2021
    Inventors: Ruchen Duan, Mostafa Sayed Roshdy Ibrahim, Wook Bong Lee, Ashok Ranganath, Srinivas Kandala
  • Publication number: 20200374032
    Abstract: A method for operating a link method includes estimating a plurality of throughputs, each throughput corresponding to one of a plurality of modulation and coding schemes, each one of the plurality of modulation and coding schemes corresponding to one of a plurality of combinations of spatial stream numbers and bandwidths, selecting a maximum throughput from the plurality of throughputs, and transmitting data according to a modulation and coding scheme, a spatial stream number, and a bandwidth corresponding to the maximum throughput.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Wook Bong Lee, Moumita Ray, Ruchen Duan
  • Patent number: 10771185
    Abstract: A system and method for operating a link. In some embodiments, the method includes transmitting a first quantity of data, using a first number of spatial streams, and a first bandwidth, receiving N1 acknowledgment signals, N1 being a nonnegative integer; receiving N2 negative acknowledgment signals, N2 being a nonnegative integer; adjusting an estimated signal to interference and noise ratio for the first number of spatial streams and the first bandwidth, based on N1 and N2; estimating a first throughput for the first number of spatial streams and the first bandwidth; estimating a second throughput for a second number of spatial streams and a second bandwidth; determining whether the second throughput exceeds the first throughput; and in response to determining that the second throughput exceeds the first throughput, transmitting a second quantity of data, using the second number of spatial streams, and the second bandwidth.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 8, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wook Bong Lee, Moumita Ray, Ruchen Duan
  • Publication number: 20200266918
    Abstract: A system and method for operating a link. In some embodiments, the method includes transmitting a first quantity of data, using a first number of spatial streams, and a first bandwidth, receiving N1 acknowledgment signals, N1 being a nonnegative integer; receiving N2 negative acknowledgment signals, N2 being a nonnegative integer; adjusting an estimated signal to interference and noise ratio for the first number of spatial streams and the first bandwidth, based on N1 and N2; estimating a first throughput for the first number of spatial streams and the first bandwidth; estimating a second throughput for a second number of spatial streams and a second bandwidth; determining whether the second throughput exceeds the first throughput; and in response to determining that the second throughput exceeds the first throughput, transmitting a second quantity of data, using the second number of spatial streams, and the second bandwidth.
    Type: Application
    Filed: May 31, 2019
    Publication date: August 20, 2020
    Inventors: Wook Bong Lee, Moumita Ray, Ruchen Duan
  • Patent number: 10536239
    Abstract: A method and apparatus are provided. The method includes receiving, by a user equipment (UE), a first signal from a transceiver, determining one of a probability and a soft mean with a soft variance associated with the detected data symbol, determining a first coefficient and a second coefficient based on the determined one of the probability and the soft mean with the soft variance associated with the detected data symbol, determining channel state information (CSI) on a channel between the transceiver and the UE based on a second signal received by the UE from the transceiver, a previous CSI, the first coefficient and the second coefficient, and tracking the communication channel based on the determined CSI.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: January 14, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hongbing Cheng, Ruchen Duan, Jungwon Lee
  • Publication number: 20180167123
    Abstract: A method and apparatus are provided. The method includes receiving, by a user equipment (UE), a first signal from a transceiver, determining one of a probability and a soft mean with a soft variance associated with the detected data symbol, determining a first coefficient and a second coefficient based on the determined one of the probability and the soft mean with the soft variance associated with the detected data symbol, determining channel state information (CSI) on a channel between the transceiver and the UE based on a second signal received by the UE from the transceiver, a previous CSI, the first coefficient and the second coefficient, and tracking the communication channel based on the determined CSI.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 14, 2018
    Inventors: Hongbing CHENG, Ruchen DUAN, Jungwon LEE