Patents by Inventor Yu-Chin Ou

Yu-Chin Ou 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).

  • Patent number: 11729789
    Abstract: Methods, systems, and devices for wireless communications are described that support beam correlation across frequency bands for beam selection in the event of a frequency switch. For example, a base station may determine a configuration indicating a mapping between a set of beam identifiers (IDs) and a set of angle coverage ranges for a set of frequency ranges which corresponds to a user equipment's (UE) operating frequencies. In some examples, the UE may undergo a frequency switch and switch from a first operating frequency to a second operating frequency. The UE may select a beam ID based on the mapping and communicate with the base station via the second operating frequency using a beam associated with the selected beam ID.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: August 15, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Yu-Chin Ou, Kobi Ravid, Ozge Koymen, Junyi Li
  • Publication number: 20230006721
    Abstract: Methods, systems, and devices for wireless communications are described. A codebook adaptation may be performed for a flexible user equipment (UEs) to determine a codebook for a physical configuration of the UE. For example, if the UE determines that the physical configuration does not correspond to a pre-loaded codebook in its memory, the UE may provide information about the physical configuration to a base station to determine a corresponding codebook. Additionally, the UE may request that the base station provide channel information to assist with the codebook determination. In some cases, this request may indicate for the base station to allocate a specific number of channel state information reference signal symbols that the UE can use for the codebook determination. Additionally or alternatively, the UE may generate the codebook internally and then signal to the base station a request for a beam refinement procedure with the generated codebook.
    Type: Application
    Filed: July 15, 2022
    Publication date: January 5, 2023
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Kobi Ravid, Yu-Chin Ou, Ozge Koymen, Junyi Li
  • Patent number: 11522581
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, and a base station may receive, information related to multipath richness of a channel environment and information related to antenna module capabilities associated with the UE for at least a first frequency band and a second frequency band. The base station may transmit, and the UE may receive, information indicating a multiple input multiple output (MIMO) mode in which to operate one or more antenna modules of the UE based at least in part on the information related to the multipath richness of the channel environment, the antenna module capabilities associated with the UE, and respective cell loadings in the first frequency band and the second frequency band. Numerous other aspects are provided.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: December 6, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Tao Luo, Mohammad Ali Tassoudji, Yu-Chin Ou, Kobi Ravid, Ozge Koymen, Junyi Li
  • Patent number: 11411321
    Abstract: An antenna system includes: a ground conductor; a substrate; a pair of planar dipole conductors disposed such that at least a portion of the substrate is disposed between the ground conductor and the pair of dipole conductors; a pair of energy couplers each electrically connected to a respective one of the pair of dipole conductors; and a pair of isolated lobes including electrically-conductive material. The pair of isolated lobes are electrically separate from the pair of dipole conductors and the pair of energy couplers, and disposed between the pair of dipole conductors and the ground conductor.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: August 9, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jon Lasiter, Donald William Kidwell, Jr., Ravindra Vaman Shenoy, Mohammad Ali Tassoudji, Jeremy Darren Dunworth, Vladimir Aparin, Yu-Chin Ou, Seong Heon Jeong
  • Patent number: 11394437
    Abstract: Methods, systems, and devices for wireless communications are described. A codebook adaptation may be performed for a flexible user equipment (UEs) to determine a codebook for a physical configuration of the UE. For example, if the UE determines that the physical configuration does not correspond to a pre-loaded codebook in its memory, the UE may provide information about the physical configuration to a base station to determine a corresponding codebook. Additionally, the UE may request that the base station provide channel information to assist with the codebook determination. In some cases, this request may indicate for the base station to allocate a specific number of channel state information reference signal symbols that the UE can use for the codebook determination. Additionally or alternatively, the UE may generate the codebook internally and then signal to the base station a request for a beam refinement procedure with the generated codebook.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: July 19, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Kobi Ravid, Yu-Chin Ou, Ozge Koymen, Junyi Li
  • Patent number: 11363469
    Abstract: Methods, systems, and devices for wireless communications are described. One method may inlcude a base station or other device estimating an intended coverage area of all possible communication devices that are to be serviced by the base station or other device. The base station or other device may dynamically optimize at least one transmission metric such as a codebook, in response to a change in the coverage area. Another method may include a base station estimating a dynamic coverage area of a set of all possible user equipments or devices to be serviced, and dynamically optimizing a codebook structure in response to a change in the coverage area. Another method may include the base station determining a use-case of the set of all possible user equipments to be serviced by the base station, and hard-coding a metric corresponding to the use case.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: June 14, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Kobi Ravid, Yu-Chin Ou, Ozge Koymen, Junyi Li
  • Publication number: 20220070834
    Abstract: Methods, systems, and devices for wireless communications are described that support beam correlation across frequency bands for beam selection in the event of a frequency switch. For example, a base station may determine a configuration indicating a mapping between a set of beam identifiers (IDs) and a set of angle coverage ranges for a set of frequency ranges which corresponds to a user equipment's (UE) operating frequencies. In some examples, the UE may undergo a frequency switch and switch from a first operating frequency to a second operating frequency. The UE may select a beam ID based on the mapping and communicate with the base station via the second operating frequency using a beam associated with the selected beam ID.
    Type: Application
    Filed: July 2, 2021
    Publication date: March 3, 2022
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Yu-Chin Ou, Kobi Ravid, Ozge Koymen, Junyi Li
  • Publication number: 20220070687
    Abstract: Methods and systems for operating a base station to reduce beam squinting include determining a lower bound on the number of directional beams used by the base station for millimeter wave wideband communications (e.g., based on operating conditions of the base station or wireless devices within the coverage area of the base station) and transmitting synchronization signal block (SSB) messages in an SSB Burst Set consistent with the determined lower bound on the number of directional beams used by the base station for millimeter wave wideband communications.
    Type: Application
    Filed: August 16, 2021
    Publication date: March 3, 2022
    Inventors: Vasanthan RAGHAVAN, Mohammad Ali TASSOUDJI, Yu-Chin OU, Kobi RAVID, Ozge KOYMEN, Junyi LI
  • Publication number: 20210351816
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, and a base station may receive, information related to multipath richness of a channel environment and information related to antenna module capabilities associated with the UE for at least a first frequency band and a second frequency band. The base station may transmit, and the UE may receive, information indicating a multiple input multiple output (MIMO) mode in which to operate one or more antenna modules of the UE based at least in part on the information related to the multipath richness of the channel environment, the antenna module capabilities associated with the UE, and respective cell loadings in the first frequency band and the second frequency band. Numerous other aspects are provided.
    Type: Application
    Filed: February 26, 2021
    Publication date: November 11, 2021
    Inventors: Vasanthan RAGHAVAN, Tao LUO, Mohammad Ali TASSOUDJI, Yu-Chin OU, Kobi RAVID, Ozge KOYMEN, Junyi LI
  • Patent number: 11166239
    Abstract: Wireless communications systems and methods related to mitigation of calibration errors are provided. A base station (BS) transmits, via an antenna array including a plurality of antenna elements, a first communication signal using a first number of the plurality of antenna elements and a first transmission power level to a user equipment (UE). The BS receives from at least one UE, a measurement report based on the first communication signal. The BS transmitting a second communication signal using a second number of the plurality of antenna elements and a second transmission power level based on the one or more measurement reports. At least one of the first number of the plurality of antenna elements is different from the second number of the plurality of antenna elements, or the first transmission power level is different from the second transmission power level. Other aspects and features are also claimed and described.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: November 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Kobi Ravid, Yu-Chin Ou, Ozge Koymen, Junyi Li
  • Patent number: 11165136
    Abstract: Techniques are discussed herein for improving the form factor of a wideband antenna in a mobile device. An example of a wireless device according to the disclosure includes at least one radio frequency integrated circuit, a flex cable assembly operably coupled to the at least one radio frequency integrated circuit, and at least one radiator operably coupled to the flex cable assembly via at least one conductor in a ball grid array.
    Type: Grant
    Filed: September 15, 2018
    Date of Patent: November 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Chin Ou, Mohammad Ali Tassoudji
  • Patent number: 11133596
    Abstract: Techniques for improving the bandwidth performance of an antenna assembly in a mobile device are provided. An example of an apparatus according to the disclosure includes a dielectric substrate having a first area and a second area disposed around the first area, a first radiator disposed on a surface of the dielectric substrate in the first area, the first radiator being configured to transmit and receive radio signals at an operational frequency, and a plurality of metamaterial structures disposed in a periodic pattern on the surface of the dielectric substrate in the second area and within a near field of the first radiator, wherein a maximum width of each of the plurality of metamaterial structures is less than half of a wavelength of the operational frequency.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 28, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Chin Ou, Mohammad Ali Tassoudji
  • Patent number: 11101849
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a first device and a second device may communicate over a communication link using a set of antenna elements. The first device may identify one or more antenna array reconfiguration trigger conditions and may correspondingly select a first subset of antenna elements for operation. The first device may transmit a message to the second device including an indication of the antenna array reconfiguration at the first device, a request for the second device to modify the second device's antenna array configuration, or both. The second device may receive the message and, based on the indication or the request, may modify its antenna array configuration. For example, the second device may select a second subset of antenna elements based on the selected first subset of antenna elements. The devices may communicate using their modified antenna array configurations.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: August 24, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Yu-Chin Ou, Kobi Ravid, Ozge Koymen, Juergen Cezanne, Junyi Li, Kapil Gulati, Jung Ho Ryu, Tianyang Bai
  • Publication number: 20210175636
    Abstract: An antenna system includes: a ground conductor; a substrate; a pair of planar dipole conductors disposed such that at least a portion of the substrate is disposed between the ground conductor and the pair of dipole conductors; a pair of energy couplers each electrically connected to a respective one of the pair of dipole conductors; and a pair of isolated lobes including electrically-conductive material. The pair of isolated lobes are electrically separate from the pair of dipole conductors and the pair of energy couplers, and disposed between the pair of dipole conductors and the ground conductor.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 10, 2021
    Inventors: Jon LASITER, Donald William KIDWELL, JR., Ravindra Vaman SHENOY, Mohammad Ali TASSOUDJI, Jeremy Darren DUNWORTH, Vladimir Aparin, Yu-Chin OU, Seong Heon JEONG
  • Publication number: 20210159946
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a first device and a second device may communicate over a communication link using a set of antenna elements. The first device may identify one or more antenna array reconfiguration trigger conditions and may correspondingly select a first subset of antenna elements for operation. The first device may transmit a message to the second device including an indication of the antenna array reconfiguration at the first device, a request for the second device to modify the second device's antenna array configuration, or both. The second device may receive the message and, based on the indication or the request, may modify its antenna array configuration. For example, the second device may select a second subset of antenna elements based on the selected first subset of antenna elements. The devices may communicate using their modified antenna array configurations.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 27, 2021
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Yu-Chin Ou, Kobi Ravid, Ozge Koymen, Juergen Cezanne, Junyi Li, Kapil Gulati, Jung Ho Ryu, Tianyang Bai
  • Publication number: 20210136598
    Abstract: The present disclosure relates to dynamic antenna array reconfiguration and signaling in millimeter wave bands. A user equipment (UE) may detect an antenna array change condition. The UE may transmit a request for beam training for an antenna array configuration in response to the detecting. The request for beam training may include a requested antenna array configuration for the UE and an indication of beam weights to use with the requested antenna array configuration. A base station may determine whether to grant or deny the requested antenna array configuration for the UE. The UE may receive, from the base station, an indication of an antenna array configuration for the UE. The base station may transmit the number of reference signals as a set of contiguous channel state information reference signals (CSI-RS). The UE may train the reconfigured active antenna array configuration based on the reference signals.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 6, 2021
    Inventors: Vasanthan RAGHAVAN, Mohammad Ali TASSOUDJI, Yu-Chin OU, Kobi RAVID, Ozge KOYMEN, Juergen CEZANNE, Junyi LI, Kapil GULATI, Jung Ho RYU, Tianyang BAI
  • Patent number: 10886608
    Abstract: In an aspect, an apparatus may be an apparatus for wireless communication. The apparatus for wireless communication may include a transceiver, a memory, and at least one processor coupled to the memory and configured to execute instructions stored in the memory to control the transceiver. In another aspect, an apparatus may be an apparatus for wireless communication. The apparatus for wireless communication may include a patch antenna coupled to the transceiver. The patch antenna includes a patch, a ground plane substantially located with respect to the patch, a probe feed coupled to the patch, and a slot-coupled feed configured to couple to the patch.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: January 5, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jeong II Kim, Jorge Fabrega Sanchez, Mohammad Ali Tassoudji, Abbas Abbaspour-Tamijani, Yu-Chin Ou, Zhang Jin, Thomas Myers
  • Patent number: 10770798
    Abstract: A wireless communication antenna system includes: a radio-frequency circuit configured to couple to a printed circuit board; a broadside radiator configured and disposed to radiate first millimeter-wave energy at a first boresight away from a broadside surface of the printed circuit board; an end-fire radiator configured and disposed to radiate second millimeter-wave energy at a second boresight away from a side surface of the printed circuit board; and at least one flex cable each including a substrate, the at least one flex cable including a plurality of signal conductors coupled to the radio-frequency circuit; where at least one of the broadside radiator or the end-fire radiator is a cavity radiator; and where respective signal conductors of the plurality of signal conductors are disposed to excite the broadside radiator and the end-fire radiator.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 8, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Yu-Chin Ou, Mohammad Ali Tassoudji
  • Publication number: 20200195320
    Abstract: Methods, systems, and devices for wireless communications are described. A codebook adaptation may be performed for a flexible user equipment (UEs) to determine a codebook for a physical configuration of the UE. For example, if the UE determines that the physical configuration does not correspond to a pre-loaded codebook in its memory, the UE may provide information about the physical configuration to a base station to determine a corresponding codebook. Additionally, the UE may request that the base station provide channel information to assist with the codebook determination. In some cases, this request may indicate for the base station to allocate a specific number of channel state information reference signal symbols that the UE can use for the codebook determination. Additionally or alternatively, the UE may generate the codebook internally and then signal to the base station a request for a beam refinement procedure with the generated codebook.
    Type: Application
    Filed: November 11, 2019
    Publication date: June 18, 2020
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Kobi Ravid, Yu-Chin Ou, Ozge Koymen, Junyi Li
  • Publication number: 20200178182
    Abstract: Wireless communications systems and methods related to mitigation of calibration errors are provided. A base station (BS) transmits, via an antenna array including a plurality of antenna elements, a first communication signal using a first number of the plurality of antenna elements and a first transmission power level to a user equipment (UE). The BS receives from at least one UE, a measurement report based on the first communication signal. The BS transmitting a second communication signal using a second number of the plurality of antenna elements and a second transmission power level based on the one or more measurement reports. At least one of the first number of the plurality of antenna elements is different from the second number of the plurality of antenna elements, or the first transmission power level is different from the second transmission power level. Other aspects and features are also claimed and described.
    Type: Application
    Filed: February 5, 2020
    Publication date: June 4, 2020
    Inventors: Vasanthan Raghavan, Mohammad Ali Tassoudji, Kobi Ravid, Yu-Chin Ou, Ozge Koymen, Junyi Li