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).

  • Publication number: 20210289500
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for physical layer (PHY) packet design for power spectral density (PSD) limits. In some implementations, a wireless communication device generates a plurality of PHY convergence protocol (PLCP) protocol data unit (PPDU) duplicates configured for transmission over a selected bandwidth, and transmits each PPDU duplicate of the plurality of PPDU duplicates on a corresponding frequency subband of a plurality of different frequency subbands. In some other implementations, the wireless communication device generates a PPDU for transmission over a set of duplicated resource units (RUs) allocated to the wireless communication device, and transmits the PPDU over the allocated set of duplicated RUs.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Inventors: Lin Yang, Jialing Li Chen, Sameer Vermani, Bin Tian, Youhan Kim, Vincent Knowles Jones, IV, Tevfik Yucek
  • Patent number: 11121822
    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). A first WLAN device may generate a first HARQ packet for transmission to a second WLAN device. The first WLAN device may determine a first basic service set (BSS) indicator and a second BSS indicator for a BSS associated with the first WLAN device and the second WLAN device. The first BSS indicator and the second BSS indicator may be indicative of a BSS identifier (BSSID) of the BSS. The first WLAN device may output the first HARQ packet for transmission to the second WLAN device. The first HARQ packet may include the first BSS indicator and the second BSS indicator in one or more fields of a physical layer (PHY) header of the first HARQ packet.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: September 14, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: James Simon Cho, Tao-Fei Samuel Ng, Youhan Kim, Bin Tian, Jialing Li Chen, Stephen Jay Shellhammer, Vincent Knowles Jones, IV
  • Patent number: 11121806
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for low density parity check (LDPC)-based incremental redundancy (IR) hybrid automatic repeat request (HARQ) transmission processing. In one aspect, an apparatus for wireless communications is configured to generate a first packet using a LDPC encoding process. The apparatus is further configured to generate coded bits using a second LDPC encoding process if the first packet is not successfully decoded by a wireless device, generate a second packet including at least some of the coded bits generated using the second LDPC encoding process, and output the second packet for transmission.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 14, 2021
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jialing Li Chen, Dung Ngoc Doan, Bin Tian, Lin Yang, Sameer Vermani, Lochan Verma, Stephen Jay Shellhammer
  • Patent number: 11109278
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for multiplexing clients of different generations in trigger-based transmissions, including trigger-based transmissions in extremely-high throughput (EHT) Wi-Fi systems. An access point (AP) may generate a trigger frame compatible with two types of stations (STAs), such as EHT STAs and legacy (or high efficiency (HE)) STAs. The AP may transmit the trigger frame to a group of STAs, where legacy STAs may process the trigger frame a legacy trigger frame. EHT STAs may process the trigger frame to determine resource unit (RU) allocations for uplink transmissions in a bandwidth greater than a legacy bandwidth. An EHT STA may determine the resources in the larger bandwidth based on an EHT RU allocation table, a legacy RU allocation table and an additional bit in the trigger frame, or an ordering of RU allocations in the trigger frame.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: August 31, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Lin Yang, Jialing Li Chen, George Cherian
  • Publication number: 20210266204
    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: Application
    Filed: February 16, 2021
    Publication date: August 26, 2021
    Inventors: Jialing Li CHEN, Bin TIAN, Lin YANG
  • Patent number: 11057174
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for wireless communication with partial channel puncturing. Using partial channel puncturing, a wireless local area network (WLAN) device may modulate data on a first portion of a wireless channel while refraining from modulating data on a second portion of the wireless channel. The partial channel puncturing can be used with an exclusion bandwidth zone defined for the WLAN. The exclusion bandwidth zone prevents transmissions on portions of channels so that the WLAN transmissions do not interfere with an incumbent system transmission in the exclusion bandwidth zone.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 6, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Lin Yang, Jialing Li Chen
  • Publication number: 20210194629
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for a link adaptation protocol in a wireless local area network (WLAN). In one aspect, the link adaptation protocol may be used to select a transmission rate option (such as a modulation and coding scheme (MCS)) for communications from a first WLAN device to a second WLAN device based on wireless channel conditions. This disclosure includes several example message sequences for the link adaptation protocol which can accommodate a variety of uplink or downlink data transmission designs, including single user (SU) and multi-user (MU) transmissions. The example message sequences may be used with orthogonal frequency division multiple access (OFDMA), multiple-input-multiple-output (MIMO), and beamformed transmissions.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 24, 2021
    Inventors: Stephen Jay Shellhammer, Sameer Vermani, Lin Yang, Jialing Li Chen, Dung Ngoc Doan, Bin Tian
  • Patent number: 11038529
    Abstract: In some aspects, methods and apparatus for wireless communications are configured to generate a packet for wireless communication where the packet includes a mark symbol in a preamble of the packet where the mark symbol includes a signature or stamp field in the mark to provide protocol information that indicates the protocol of the packet, such as an 802.11 EHT packet. In some other aspects, a cyclic redundancy check field in the mark symbol may be manipulated in various ways to indicate the protocol of the packet in lieu of providing the signature or stamp field.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: June 15, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Lin Yang, Jialing Li Chen
  • Publication number: 20210176657
    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: Application
    Filed: November 25, 2020
    Publication date: June 10, 2021
    Inventors: Lin Yang, Bin Tian, Sameer Vermani, Stephen Jay Shellhammer, Dung Ngoc Doan, Jialing Li Chen
  • Publication number: 20210167889
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN may include a plurality of link adaptation test portions that are generated using a corresponding plurality of transmission rate options. For example, the plurality of link adaptation test portions may be modulated using different modulation and coding scheme (MCS) options. Thus, a single test packet may be used to evaluate different transmission rate options. The second WLAN device may provide feedback information regarding the link adaptation 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: Application
    Filed: November 24, 2020
    Publication date: June 3, 2021
    Inventors: Lin Yang, Bin Tian, Dung Ngoc Doan, Sameer Vermani, Stephen Jay Shellhammer, Jialing Li Chen
  • Publication number: 20210160713
    Abstract: This disclosure provides methods, devices and systems for link adaptation in wireless communications. Some implementations more specifically relate to transmitter-based modulation and coding scheme (MCS) selection. A transmitting device transmits a test packet, over a wireless channel, to a receiving device. The receiving device generates one or more signal-to-interference-plus-noise ratio (SINR) estimates for the wireless channel based on the received sounding packet. In some aspects, each SINR estimate may be associated with a particular modulation order. In some other aspects, each SINR estimate may be generated based on a transmitter configuration or a receiver type to be used for subsequent communications between the transmitting device and the receiving device. The receiving device transmits feedback, including the SINR estimates, to the transmitting device.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 27, 2021
    Inventors: Lin YANG, Bin TIAN, Stephen Jay SHELLHAMMER, Dung Ngoc DOAN, Sameer VERMANI, Jialing Li CHEN
  • Publication number: 20210135792
    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). A first WLAN device may generate a first HARQ packet for transmission to a second WLAN device. The first WLAN device may determine a first basic service set (BSS) indicator and a second BSS indicator for a BSS associated with the first WLAN device and the second WLAN device. The first BSS indicator and the second BSS indicator may be indicative of a BSS identifier (BSSID) of the BSS. The first WLAN device may output the first HARQ packet for transmission to the second WLAN device. The first HARQ packet may include the first BSS indicator and the second BSS indicator in one or more fields of a physical layer (PHY) header of the first HARQ packet.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Inventors: James Simon Cho, Tao-Fei Samuel Ng, Youhan Kim, Bin Tian, Jialing Li Chen, Stephen Jay Shellhammer, Vincent Knowles Jones, IV
  • Patent number: 10999014
    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). A station (STA) may send a HARQ transmission to another STA. The HARQ protocol may support the use of different types of feedback from the receiving STA to control the HARQ retransmission process. This disclosure provides example message formats to support HARQ transmission and HARQ feedback in a WLAN.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: May 4, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Bin Tian, Hemanth Sampath, Sameer Vermani, Lin Yang, Dung Ngoc Doan, Simone Merlin, Alfred Asterjadhi, Jialing Li Chen, Stephen Jay Shellhammer
  • Publication number: 20210127291
    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: Application
    Filed: October 23, 2020
    Publication date: April 29, 2021
    Inventors: Jialing Li CHEN, Sameer VERMANI, Bin TIAN, Lin YANG
  • Publication number: 20210126700
    Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for managing high volumes of space-time-streams in Wi-Fi systems. An access point (AP) may transmit packets including long training field (LTF) sections using a number of space-time-streams greater than eight. Mobile stations (STAs) in the system may or may not be capable of processing this number of streams. The AP may modulate an LTF section using a matrix with dimensions smaller than the number of streams by using tone-interleaving or by performing modulation with separate matrices in time and frequency. In some other implementations, the AP may split the antennas for transmission into groups, each group transmitting either different packets in a subset of streams or a same packet in a subset of tones. In further implementations, the AP may combine multiple space-time-streams into a super stream that supports reception at different types of STAs.
    Type: Application
    Filed: November 23, 2020
    Publication date: April 29, 2021
    Inventors: Sameer Vermani, Bin Tian, Jialing Li Chen, Lin Yang, Lochan Verma
  • Patent number: 10958391
    Abstract: Methods and apparatuses for communicating over a wireless communication network are disclosed herein. One example apparatus includes a memory that stores instructions. The apparatus further includes a processor coupled with the memory. The processor and the memory are configured to determine a total bandwidth for a transmission of a message, the total bandwidth including a plurality of tones. The processor is further configured to divide the plurality of tones in the total bandwidth into one or more 26-, 52-, 106-, 242-, or 996-tone blocks. The processor is further configured to determine an indication. The indication assigns one or more of the one or more tone blocks to a first wireless communication device. The apparatus further includes a transmitter configured to transmit the indication to at least the first wireless communication device or a second device.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: March 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Lin Yang, Bin Tian, Dung Doan, Jialing Li Chen, Youhan Kim
  • Publication number: 20210083918
    Abstract: This disclosure provides methods, devices, and systems for a wireless communication device to perform signal phase rotation. In some implementations, the wireless communication device may determine a number of phase rotation parameters to be applied to a number of tones of a transmission signal. In some aspects, each of the phase rotation parameters indicates a phase rotation to be applied to each of the tones according to a carrier index range for each of the tones and a bandwidth mode for the transmission signal. In some implementations, the wireless communication device may apply the phase rotation parameters to respective ones of the tones according to the specified phase rotations and the carrier index ranges, and transmit the transmission signal from the wireless communication device according to the applied phase rotation parameters.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 18, 2021
    Inventors: Lin YANG, Jialing Li CHEN, Bin TIAN
  • Publication number: 20210084654
    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: September 15, 2020
    Publication date: March 18, 2021
    Inventors: Lin Yang, Bin Tian, Dung Ngoc Doan, Jialing Li Chen, Didier Johannes Richard Van Nee
  • Publication number: 20210067383
    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: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Inventors: Lin Yang, Bin Tian, Jialing Li Chen, Louay Jalloul, Vincent Knowles Jones, IV, Ning Zhang, Chi-Lin Su, Ahmad Abdulrahman Mohammed
  • Publication number: 20210045117
    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: August 8, 2020
    Publication date: February 11, 2021
    Inventors: Jialing Li Chen, Sameer Vermani, Lin Yang, Bin Tian, Vincent Knowles Jones, IV, Youhan Kim