Patents by Inventor Shan Qing

Shan Qing 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: 20240121871
    Abstract: In order to provide a balance between a fast start-up in start-up phase and a low light output ripple in normal operation phase, it is provided a LED driving circuit comprising: an input to receive a LED driving current, a buffer circuit adapted to buffer said LED driving current, and an output to be connected to LED and adapted to output the LED driving current, after buffered, to the LED, characterized in that, further comprises a buffer adjustment circuit adapted to adjust the buffer capability of the buffer circuit at a first level, in a start-up phase of the LED driving circuit when the LED driving circuit starts to receive said LED driving current, and adjust the buffer capability of the buffer circuit at a second level larger than the first level in a normal operation phase later than the start-up phase.
    Type: Application
    Filed: March 7, 2022
    Publication date: April 11, 2024
    Inventors: SHAN QING, GUY LOUIS PAUL DE BONDT, JUNWEI TIAN, DALIBOR CVORIC, MORNA SHEN, HERMANUS JOHANNES MARIA VOS, FRITS TOBI DE JONGH
  • Publication number: 20240007910
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station according to a first radio access technology (RAT) in a first frequency range. The UE may perform measurements on a set of candidate cells of a second RAT or a second frequency range based on a determination for the UE to operate according to the second RAT or the second frequency range. The UE may perform a mobility procedure to establish a connection with a first cell of the set of candidate cells based on a determination that a first value of a first measurement parameter for the first cell satisfies a first threshold, and further based on a comparison of a different, second value of a second measurement parameter for the first cell to a second threshold.
    Type: Application
    Filed: January 22, 2021
    Publication date: January 4, 2024
    Inventors: Xianwei Zhu, Jianqiang Zhang, Xuqiang Zhang, Xiaochen Chen, Xiaoning Lu, Yifan Du, Qiang Deng, Jinglei Tian, Jie Mao, Arvind Vardarajan Santhanam, Yong Hou, Shan Qing, Zhongyue Lou, Tom Chin, Wei-Jei Song, Mingchun Yang, Sathish Krishnamoorthy, Rajeev Pal
  • Publication number: 20230370916
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station associated with a first radio access technology (RAT), a neighbor cell list including entries for at least a first set of neighbor cells and a second set of neighbor cells, the first set of neighbor cells and the second set of neighbor cells associated with a second RAT. The UE may determine that the first set of neighbor cells is associated with a first network operator and that the second set of neighbor cells is associated with a second network operator. The UE may measure at least one neighbor cell of the neighbor cell list based at least in part on prioritization of the first set of neighbor cells relative to the second set of neighbor cells. Numerous other aspects are described.
    Type: Application
    Filed: December 16, 2020
    Publication date: November 16, 2023
    Inventors: Xianwei ZHU, Junli WU, Xuqiang ZHANG, Jianqiang ZHANG, Ling XIE, Kuo-Chun LEE, Arvind Vardarajan SANTHANAM, Xiaochen CHEN, Shan QING, Xiaoning LU, Yong HOU, Peng HU, Yifan DU, Wei-Jei SONG, Tom CHIN, Mingchun YANG, Rajeev PAL, Sathish KRISHNAMOORTHY
  • Publication number: 20230354156
    Abstract: A user equipment (UE) receives a SIB1 message from a base station. The SIB1 message lists first and second public land mobile network identifiers (PLMN IDs), the first PLMN ID having a corresponding tracking area code (TAC) and the second PLMN ID not having a TAC. The UE reports the first PLMN ID and TAC but not the second PLMN ID while performing PLMN selection. In another aspect, the UE unsuccessfully attempts to select or reselect to a shared cell of the base station with the second PLMN ID. In response to the failed attempt, the UE bars the shared cell as a candidate for cell selection/reselection, due to a missing TAC. When the UE attempts to select or reselect to the shared cell with the first PLMN ID, which may or may not have a TAC, the UE reevaluates the barring due to selection of the first PLMN ID.
    Type: Application
    Filed: September 3, 2021
    Publication date: November 2, 2023
    Inventors: Peng HU, Hewu GU, Jun DENG, Ling XIE, Liang HONG, Xuqiang ZHANG, Xiaochen CHEN, Yong HOU, Xiaoning LU, Shan QING, Zhongyue LOU, Tom CHIN
  • Publication number: 20230319920
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured with two subscriptions. The first subscription may support dual connectivity with one or more cell groups, such as a master cell group (MCG) and a secondary cell group (SCG), while a second subscription may not support dual connectivity. Each subscription may support communications with one or more radio access technologies (RAT). The UE may use the protocol stack for a RAT in the first subscription to receive idle-mode signaling, such as one or more paging messages, from the second subscription using the same RAT.
    Type: Application
    Filed: August 28, 2020
    Publication date: October 5, 2023
    Inventors: Ling XIE, Bhupesh Manoharlal UMATT, Reza SHAHIDI, Qingxin CHEN, Shan QING, Mutaz Zuhier Afif SHUKAIR, Tom CHIN, Hemanth Kumar RAYAPATI, Tongxin WANG, Daniel AMERGA, Peng HU, Xuqiang ZHANG, Xiaoyu LI, Liang HONG, Zhongsheng LI
  • Publication number: 20220377832
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may receive a first connected mode discontinuous reception (CDRX) configuration from a first cell associated with a first radio access technology (RAT), the first CDRX configuration includes a first indication of a first on occasion. The UE may receive a second CDRX configuration from a second cell associated with a second RAT, the second CDRX configuration includes a second indication of a second on occasion. The UE may determine that the first on occasion and the second on occasion are separated by a threshold. The UE may transmit, based at least in part on the determination that the first on occasion and the second on occasion are separated by the threshold, a CDRX reconfiguration request message.
    Type: Application
    Filed: September 28, 2019
    Publication date: November 24, 2022
    Inventors: Ling XIE, Wei SUN, Jie MAO, Xuepan GUAN, Xiaoyu LI, Tom CHIN, Lei SHEN, Shan QING, Zhongyue LOU, Qingxin CHEN, Xiantao LIU, Xiaochen CHEN
  • Patent number: 10887828
    Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a mode in which the user equipment is enabled, wherein the mode is one of a non-standalone mode, a standalone mode, or a standalone mode and a non-standalone mode; determine whether to prioritize a first set of frequencies associated with a first radio access technology (RAT) or a second set of frequencies associated with a second RAT based at least in part on the mode in which the user equipment is enabled, wherein the first RAT is different from the second RAT; and perform a search of the first set of frequencies or the second set of frequencies based at least in part on whether the first set of frequencies or the second set of frequencies is prioritized. Numerous other aspects are provided.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: January 5, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Kuo-Chun Lee, Srinivasan Balasubramanian, Arvind Santhanam, Shan Qing, Xiaoning Lu
  • Patent number: 10667144
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine location information regarding the UE; and activate a receive beam of the UE in at least one symbol, associated with at least one transmit beam of at least one base station, based at least in part on the location information, wherein the UE is configured to activate the receive beam based at least in part on mapping information, at least partially determined by the UE, that indicates that the receive beam is associated with the location information. Numerous other aspects are provided.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: May 26, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Huan Xu, Shan Qing, Kumarabhijeet Singh, Chetan Chakravarthy, Arvindhan Kumar, Parthasarathy Krishnamoorthy
  • Patent number: 10477553
    Abstract: Methods and apparatus are provided for aggressive beam selection during a handover procedure. A User Equipment (UE) measures a plurality of candidate downlink beams of a target base station (BS), wherein measurement opportunities for each of the candidate downlink beams are scheduled periodically. The UE reports measurements relating to one or more of the measured candidate downlink beams to a source BS. The UE receives a command to handover to the target BS, and in response to receiving the command, attempts to find a new downlink beam of the target BS having a corresponding measurement opportunity that is earlier than a next measurement opportunity of one of the one or more candidate downlink beam.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 12, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Huan Xu, Shan Qing, Yan Ming Wang
  • Publication number: 20190230519
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine location information regarding the UE; and activate a receive beam of the UE in at least one symbol, associated with at least one transmit beam of at least one base station, based at least in part on the location information, wherein the UE is configured to activate the receive beam based at least in part on mapping information, at least partially determined by the UE, that indicates that the receive beam is associated with the location information. Numerous other aspects are provided.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 25, 2019
    Inventors: Huan XU, Shan QING, Kumarabhijeet SINGH, Chetan CHAKRAVARTHY, Arvindhan KUMAR, Parthasarathy KRISHNAMOORTHY
  • Publication number: 20190132826
    Abstract: Methods and apparatus are provided for aggressive beam selection during a handover procedure. A User Equipment (UE) measures a plurality of candidate downlink beams of a target base station (BS), wherein measurement opportunities for each of the candidate downlink beams are scheduled periodically. The UE reports measurements relating to one or more of the measured candidate downlink beams to a source BS. The UE receives a command to handover to the target BS, and in response to receiving the command, attempts to find a new downlink beam of the target BS having a corresponding measurement opportunity that is earlier than a next measurement opportunity of one of the one or more candidate downlink beam.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 2, 2019
    Inventors: Huan XU, Shan QING, Yan Ming WANG
  • Patent number: 10256877
    Abstract: The apparatus may be an apparatus for wireless communication. The apparatus for wireless communication may include a processing system. The processing system may manage an antenna beam. The processing system may be configured to monitor a parameter of a signal and widen the antenna beam of the apparatus for wireless communication when the parameter falls below a threshold.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: April 9, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Sandeep Rao, Defang Chen, Shan Qing
  • Publication number: 20190069226
    Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a mode in which the user equipment is enabled, wherein the mode is one of a non-standalone mode, a standalone mode, or a standalone mode and a non-standalone mode; determine whether to prioritize a first set of frequencies associated with a first radio access technology (RAT) or a second set of frequencies associated with a second RAT based at least in part on the mode in which the user equipment is enabled, wherein the first RAT is different from the second RAT; and perform a search of the first set of frequencies or the second set of frequencies based at least in part on whether the first set of frequencies or the second set of frequencies is prioritized. Numerous other aspects are provided.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 28, 2019
    Inventors: Kuo-Chun Lee, Srinivasan Balasubramanian, Arvind Santhanam, Shan Qing, Xiaoning Lu
  • Publication number: 20190044578
    Abstract: The apparatus may be an apparatus for wireless communication. The apparatus for wireless communication may include a processing system. The processing system may manage an antenna beam. The processing system may be configured to monitor a parameter of a signal and widen the antenna beam of the apparatus for wireless communication when the parameter falls below a threshold.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 7, 2019
    Inventors: Sandeep RAO, Defang CHEN, Shan QING
  • Patent number: 8797928
    Abstract: Techniques presented herein allow a wireless device, (e.g., a mobile station, MS) to automatically enter a low power state when detecting silence based on monitored VoIP transmissions. Automatically entering the low power state may help the wireless device conserve power. In addition, for certain types of scheduling services in which bandwidth is allocated to the wireless device from within a system (e.g., Unsolicited Grant Service or extended real time polling service), automatically entering the low power state when silence is detected may also free up bandwidth (i.e., that would have otherwise been allocated to the wireless device entering the low power state) for allocation to other wireless devices in the system.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Patrick Lim, Shan Qing, Tom Chin
  • Patent number: 8706117
    Abstract: Certain embodiments of the present disclosure allow a mobile station (MS) to proactively request neighbor base station information from a serving base station, for example, if a mobile neighbor advertisement (MOB_NBR-ADV) message is not received (or expected) in a predetermined time period.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: April 22, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Guangming Carl Shi, Kuo-Chun Lee, Steven D. Cheng, Shan Qing, Tom Chin
  • Patent number: 8660153
    Abstract: A method for frame number synchronization in a wireless communication network may be implemented by a base station. The method may include determining a current time from a timing source that is common to multiple other base stations. The method may also include determining a time offset between the current time and a reference time, wherein the base station and the multiple other base stations use the same reference time for determining the time offset. The method may also include determining a current frame number based on the time offset.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: February 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tom Chin, Shan Qing, Kuo-Chun Lee
  • Patent number: 8639258
    Abstract: Methods and apparatus are provided for operating in a first RAN at a working frequency, determining a priority of measurement tasks enabled by the first RAN, and dynamically scheduling the tasks according to the priority. For certain aspects, the first RAN may be a TD-SCDMA network. The measurement tasks are intended to measure at least one parameter of a serving cell in the first RAN on a primary frequency, at least one cell in the first RAN on at least one frequency other than the primary frequency, one or more cells in at least one RAN other than the first RAN (e.g., a GSM network) or any combination thereof. This dynamic assignment allows the UE to make scheduling decisions on which frequencies and RANs to measure, as well as how often these frequencies and RANs are measured, thereby providing for more efficient use of idle slots over conventional haphazard scheduling.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: January 28, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Qingxin Chen, Aamod Dinkar Khandekar, Srikanth Gummadi, Shan Qing
  • Patent number: 8600108
    Abstract: Embodiments of the present invention relate to a data processing method comprising the steps of processing a first sample set associated with first results of tracking a target in a number of image frames using a first object classifier arranged to operate according to a first feature and processing a second sample set associated with second results of tracking the target in said number of image frames using a second object classifier arrange to operate according to a second feature, and using at least one of the first and second tracking results to influence at least one particle filter adapted to influence at least one of subsequent first and second tracking results.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: December 3, 2013
    Assignee: Hewlett-Packard Development Compant, L.P.
    Inventors: Liang Tang, Shan-Qing Li, Lei Wang, Ke-Yan Liu, Wei Liu
  • Patent number: 8594021
    Abstract: Certain aspects of the present disclosure relate to a technique for effective measurement in a second Radio Access Technology (e.g., TD-SCDMA) while receiving service in a first Radio Access Technology (e.g., GSM).
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: November 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Tom Chin, Kuo-Chun Lee, Shan Qing, Qingxin Chen