Patents by Inventor Jialing Li Chen

Jialing Li 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).

  • Patent number: 11665574
    Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARQ), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: May 30, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Sameer Vermani, Bin Tian, Lin Yang
  • Publication number: 20230156780
    Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.
    Type: Application
    Filed: January 2, 2023
    Publication date: May 18, 2023
    Inventors: Jialing Li Chen, Sameer Vermani, Lin Yang, Bin Tian, Vincent Knowles Jones, IV, Youhan Kim
  • Publication number: 20230156781
    Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.
    Type: Application
    Filed: January 2, 2023
    Publication date: May 18, 2023
    Inventors: Jialing Li Chen, Sameer Vermani, Lin Yang, Bin Tian, Vincent Knowles Jones, IV, Youhan Kim
  • Publication number: 20230135383
    Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve a desired amplitude distribution. Some implementations more specifically relate to performing an encoding operation to shape the amplitudes of the resultant symbols such that the amplitudes have a non-uniform distribution. In some implementations of the non-uniform distribution, the probabilities associated with the respective amplitudes generally increase with decreasing amplitude. Some implementations enable the tracking of MPDU boundaries to facilitate successful decoding by a receiving device. Additionally or alternatively, some implementations enable the determination of a packet length after performing the amplitude shaping, which enables a transmitting device to determine the number of padding bits to add to the payload and to signal the packet length to a receiving device so that the receiving device may determine the duration of the packet.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Inventors: Lin YANG, Bin TIAN, Dung Ngoc DOAN, Jialing Li CHEN, Didier Johannes Richard VAN NEE
  • Patent number: 11637723
    Abstract: Methods, systems, and devices for wireless communication are described. In some systems (e.g., Wi-Fi systems), a transmitting device such as an access point (AP) or mobile station (STA), may identify a number of spatial streams for a data transmission that is less than a number of transmit antennas, and may transmit a packet over a channel. In a first implementation, the packet may be formatted in a multi-user frame format, with a number of long training field (LTF) symbols equal to the number of transmit antennas. In a second implementation, the packet may be a null data packet (NDP), and the device may transmit a separate data packet. In a third implementation, the packet may be formatted in single-user frame format with a modified LTF. A receiving device may receive the packet, and may perform channel estimation and power amplifier (PA) distortion cancellation based on the received packet.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: April 25, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Lin Yang, Bin Tian, Jialing Li Chen, Louay Jalloul, Vincent Knowles Jones, IV, Ning Zhang, Chi-Lin Su, Ahmad Abdulrahman Mohammed
  • Patent number: 11632277
    Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, for generating or receiving a multi-generation physical layer protocol data unit (PPDU). The multi-generation PPDU may concurrently include a first generation-specific preamble based on a first generation of a wireless communication specification (such as that defined by the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards) and a second generation-specific preamble based on a second generation of the wireless communication specification in a same transmission. The generation-specific preambles may be generated based on bandwidth portions of a wireless channel that each generation-specific preamble will occupy in the multi-generation PPDU. One or more of the generation-specific preambles may be modified based on an aggregate bandwidth of the multi-generation PPDU.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: April 18, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Stephen Jay Shellhammer, Bin Tian, Sameer Vermani, Jialing Li Chen, Youhan Kim
  • Patent number: 11627027
    Abstract: A technique for wireless communication of a punctured null data packet with a long training field sequence is disclosed. The long training field (LTF) sequence is generated for the null data packet (NDP) for transmission over a channel having a bandwidth that is an integer multiple of 80 MHz. The LTF sequence is modulated onto a plurality of tones of the channel excluding tones within a punctured subchannel of a plurality of subchannels of the channel. The modulation may be based on a size and location of the punctured subchannel and a symbol duration associated with transmitting the LTF sequence. The NDP is transmitted including the LTF sequence to a second wireless communication device via the channel. A partial bandwidth feedback may be received in response to the LTF in the punctured NDP.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: April 11, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Bin Tian, Youhan Kim, Cheng-Ming Chen
  • Patent number: 11616681
    Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to tone mapping techniques and packet designs that support duplicate (or “DUP mode”) transmissions to multiple users. In some implementations, an access point (AP) may transmit a PPDU that includes first user data and second user data, where at least the first user data is transmitted in a DUP mode. As such, the first user data may be mapped to a number (N) of tones spanning a first RU in accordance with a dual carrier modulation (DCM) scheme, and a duplicate copy of the first user data may be mapped to N tones spanning a second RU in accordance with the DCM scheme. In some implementations, the second user data also may be transmitted in a DUP mode.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: March 28, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Kanke Wu, Bin Tian
  • Patent number: 11570780
    Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve a desired amplitude distribution. Some implementations more specifically relate to performing an encoding operation to shape the amplitudes of the resultant symbols such that the amplitudes have a non-uniform distribution. In some implementations of the non-uniform distribution, the probabilities associated with the respective amplitudes generally increase with decreasing amplitude. Some implementations enable the tracking of MPDU boundaries to facilitate successful decoding by a receiving device. Additionally or alternatively, some implementations enable the determination of a packet length after performing the amplitude shaping, which enables a transmitting device to determine the number of padding bits to add to the payload and to signal the packet length to a receiving device so that the receiving device may determine the duration of the packet.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: January 31, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Lin Yang, Bin Tian, Dung Ngoc Doan, Jialing Li Chen, Didier Johannes Richard Van Nee
  • Patent number: 11570654
    Abstract: This disclosure provides systems, methods, and apparatus for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN device may be formatted as a multiple-input-multiple-output (MIMO) transmission and may include one or more test portions for link quality estimation of the MIMO transmission. A link quality estimation portion of the test packet may permit measurement of link quality for various spatial streams of the MIMO transmission. The link adaptation test packet may enable a fast rate adaptation of a communication link based on the impact of interference to the various spatial streams. The second WLAN device may provide feedback information regarding the one or more test portions. The feedback information may be used to determine a transmission rate for a subsequent transmission from the first WLAN device to the second WLAN device based on wireless channel conditions.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: January 31, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Lin Yang, Bin Tian, Sameer Vermani, Stephen Jay Shellhammer, Dung Ngoc Doan, Jialing Li Chen
  • Patent number: 11564250
    Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.
    Type: Grant
    Filed: August 8, 2020
    Date of Patent: January 24, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Sameer Vermani, Lin Yang, Bin Tian, Vincent Knowles Jones, IV, Youhan Kim
  • Publication number: 20230020559
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a hybrid automatic repeat request (HARQ) protocol in a wireless local area network (WLAN). In some aspects, a first WLAN device may transmit a first HARQ frame to a second WLAN device. The first WLAN device may determine whether a first feedback message received from the second WLAN device includes HARQ acknowledgement information or non-HARQ acknowledgment information. The first feedback message may be a HARQ Block Acknowledgement (H-BA) message having a multi-station Block ACK (M-BA) frame format that includes HARQ acknowledgment information. The first WLAN device may transmit a second HARQ frame to the second WLAN device in response to determining the first feedback message includes the HARQ acknowledgment information. The first WLAN device may transmit a non-HARQ frame in response to determining the first feedback message includes non-HARQ acknowledgement information.
    Type: Application
    Filed: September 16, 2022
    Publication date: January 19, 2023
    Inventors: Alfred Asterjadhi, George Cherian, Abhishek Pramod Patil, Lochan Verma, Jialing Li Chen, Stephen Jay Shellhammer, Dung Ngoc Doan, Bin Tian
  • Patent number: 11546938
    Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.
    Type: Grant
    Filed: August 8, 2020
    Date of Patent: January 3, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Sameer Vermani, Lin Yang, Bin Tian, Vincent Knowles Jones, IV, Youhan Kim
  • Patent number: 11533694
    Abstract: This disclosure provides systems, methods, apparatus, and computer programs encoded on computer storage media, for relative timing drift correction for distributed multi-user transmissions. In one aspect, a first access point (AP) may receive a first signal from a second AP. The first signal may be associated with a channel sounding procedure to be performed substantially simultaneously by the second AP and the first AP. The first AP may then receive a second signal from the second AP, and prior to a substantially simultaneous transmission by the second AP and the first AP. The second signal may include timing information relative to the first signal. The first AP may determine a start time of the substantially simultaneous transmission at the first AP based on the timing information, and may initiate the substantially simultaneous transmission according to the determined start time.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: December 20, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Bin Tian, Lin Yang, Jialing Li Chen
  • Publication number: 20220393790
    Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to tone mapping techniques and physical layer convergence protocol (PLCP) protocol data unit (PPDU) designs that support duplicate (or “DUP mode”) transmissions with channel puncturing. In some implementations, a wireless communication device may transmit a PPDU carrying user data over a wireless channel excluding one or more punctured subchannels, where the user data is transmitted in a DUP mode. As such, the user data may be mapped to a number (N) of tones spanning a first portion of the wireless channel and a duplicate copy of the user data may be mapped to N tones spanning a second portion of the wireless channel.
    Type: Application
    Filed: June 7, 2021
    Publication date: December 8, 2022
    Inventors: Jialing Li CHEN, Kanke WU, Bin TIAN, Youhan KIM
  • Publication number: 20220385521
    Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to tone mapping techniques and packet designs that support duplicate (or “DUP mode”) transmissions to multiple users. In some implementations, an access point (AP) may transmit a PPDU that includes first user data and second user data, where at least the first user data is transmitted in a DUP mode. As such, the first user data may be mapped to a number (N) of tones spanning a first RU in accordance with a dual carrier modulation (DCM) scheme, and a duplicate copy of the first user data may be mapped to N tones spanning a second RU in accordance with the DCM scheme. In some implementations, the second user data also may be transmitted in a DUP mode.
    Type: Application
    Filed: May 25, 2021
    Publication date: December 1, 2022
    Inventors: Jialing Li CHEN, Kanke WU, Bin TIAN
  • Publication number: 20220385437
    Abstract: This disclosure provides methods, devices and systems for wireless communications over a 320 MHz bandwidth. Some implementations more specifically relate to signaling techniques for indicating the bandwidth of a physical layer convergence protocol (PLCP) protocol data unit (PPDU) transmitted in a secondary 160 MHz channel of the 320 MHz bandwidth. In some implementations, an access point (AP) may transmit an aggregated PPDU (A-PPDU) that includes a first sub-PPDU transmitted within a primary 160 MHz channel and a second sub-PPDU transmitted within a secondary 160 MHz channel. In such implementations, the first sub-PPDU may carry bandwidth information indicating the bandwidth of the first sub-PPDU within the primary 160 MHz channel and the second sub-PPDU may carry bandwidth information indicating the 320 MHz bandwidth.
    Type: Application
    Filed: May 25, 2021
    Publication date: December 1, 2022
    Inventors: Stephen Jay Shellhammer, Bin Tian, Jialing Li Chen, Sameer Vermani, Kanke Wu, Youhan Kim
  • Patent number: 11509508
    Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication that can be used to reduce the peak-to-average power ratio (PAPR) of data transmissions by increasing the degree of randomness with which data is scrambled for transmission over a wireless medium. In some implementations, a transmitting device may determine a set of scrambling initialization bits, and may generate a scrambling sequence based on the set of scrambling initialization bits and an 11th-order polynomial. The transmitting device may provide an indication of the set of scrambling initialization bits in a physical layer convergence protocol (PLCP) protocol data unit (PPDU). The transmitting device may scramble one or more portions of the PPDU based on the scrambling sequence. The transmitting device may transmit the PPDU over a wireless medium. In some instances, the set of scrambling initialization bits consists of 11 bits, and may be included in a Service field of the PPDU.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: November 22, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Bin Tian, Lin Yang
  • Patent number: 11509416
    Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to tone mapping techniques and physical layer convergence protocol (PLCP) protocol data unit (PPDU) designs that support duplicate (or “DUP mode”) transmissions with channel puncturing. In some implementations, a wireless communication device may transmit a PPDU carrying user data over a wireless channel excluding one or more punctured subchannels, where the user data is transmitted in a DUP mode. As such, the user data may be mapped to a number (N) of tones spanning a first portion of the wireless channel and a duplicate copy of the user data may be mapped to N tones spanning a second portion of the wireless channel.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: November 22, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Kanke Wu, Bin Tian, Youhan Kim
  • Patent number: 11496924
    Abstract: This disclosure provides methods, devices and systems of wireless communication in accordance with hybrid automatic repeat request (HARQ) techniques. Some implementations more specifically relate to aligning aggregate medium access control (MAC) protocol data unit (A-MPDU) subframes with codeword boundaries in a physical-layer service data unit (PSDU). The alignment may be performed by selectively adding padding bits to the PSDU based on the size of each A-MPDU subframe and the lengths of the codewords. In some aspects, an A-MPDU subframe may be aligned with a first codeword of the PSDU so that the first A-MPDU subframe is encoded exclusively within the first codeword. In some other aspects, an A-MPDU subframe may be aligned with two or more contiguous codewords of the PSDU so that the two or more contiguous codewords include the A-MPDU subframe and no portions of any other A-MPDU subframe.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: November 8, 2022
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Alfred Asterjadhi, Stephen Jay Shellhammer, Dung Ngoc Doan, Bin Tian, George Cherian, Abhishek Pramod Patil