Patents by Inventor Kexin Ma

Kexin Ma 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: 20240291532
    Abstract: One or more antennas of an electronic device are selected to transmit wireless signals based at least in part on maximum transmitted power limits (MTPLs) associated with the antennas. The one or more antennas may also be selected based on signal characteristic values, efficiency values, or both signal characteristic values and efficiency values.
    Type: Application
    Filed: February 27, 2023
    Publication date: August 29, 2024
    Inventors: Hailong Yang, Lijie Zhang, Kexin Ma, Peng Xiao
  • Publication number: 20240188067
    Abstract: Systems and methods for reducing collisions of transmission data for a first subscriber (e.g., a voice subscriber) with transmission data for a second subscriber (e.g., a data subscriber) at a dual sim dual active (DSDA) user equipment (UE) are described herein. A DSDA UE may be configured to implement a modified skipUplinkTxDynamic feature that avoids collisions by buffering transmission data of the data subscriber and sending a (later) scheduling request (SR) for a grant for that data. A DSDA UE may regulate data subscriber transmissions to avoid a transmission duration for the voice subscriber. A DSDA UE may reduce certain transmissions for a voice subscriber (subject to a block error rate (BLER) threshold for the voice subscriber) to lower the probability of collision. A DSDA UE may operate a data subscriber and a voice subscriber in the same cell to avoid collisions due to RF tuning and/or relative slot overlap.
    Type: Application
    Filed: August 27, 2021
    Publication date: June 6, 2024
    Inventors: Lijie Zhang, Alex Yee Kit Ho, Bing Zhao, Kexin Ma, Qiang Miao, Tao Huang, Wen Zhao, Yanxia Wang, Ying Zhang, Zhiwei Wang
  • Publication number: 20240172104
    Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.
    Type: Application
    Filed: January 24, 2024
    Publication date: May 23, 2024
    Inventors: Junzhen Qin, Wen Zhao, Lijie Zhang, Lele Cui, Wenping Lou, Qiang Miao, Zhiwei Wang, Ying Zhang, Deepankar Bhattacharjee, Kexin Ma, Alex Yee Kit Ho
  • Publication number: 20240080049
    Abstract: Embodiments described herein include methods and apparatus for dynamically selecting antenna settings for reception of wireless signals in multiple radio frequency band by wireless devices. A wireless device includes at least two SIM/eSIM profiles that each use different radio frequency bands and dynamically selects an antenna tuner setting based on requirements of one or more applications in use and key radio frequency performance indicators. In some embodiments, the antenna hardware tuner setting is selected to improve paging reception for a secondary SIM/eSIM from a second cellular wireless network when applications communicating using a first SIM/eSIM via a first cellular wireless network can accommodate performance degradation for a period of time.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 7, 2024
    Inventors: Kexin MA, Zhengbo ZHU, Alex Yee Kit HO, Mei WANG
  • Patent number: 11917532
    Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: February 27, 2024
    Assignee: Apple Inc.
    Inventors: Junzhen Qin, Wen Zhao, Lijie Zhang, Lele Cui, Wenping Lou, Qiang Miao, Zhiwei Wang, Ying Zhang, Deepankar Bhattacharjee, Kexin Ma, Alex Yee Kit Ho
  • Publication number: 20230196127
    Abstract: A method and device for constructing a legal knowledge graph based on joint entity and relation extraction. The construction method comprises the following steps: constructing a triple data set; design of a model architecture and training of a model, wherein the model architecture comprises an encoding layer, a head entity extraction layer and a relation-tail entity extraction layer; determination of the relation between the sentences of the text; triple combination and graph visualization. The design of the model framework of the present disclosure adopts a Chinese Bert pre-training model as an encoder. In the entity extraction part, two BiLSTM binary classifiers are used to identify the start position and end position of an entity. The head entity is first extracted, and then the tail entity corresponding to the entity relation is extracted from the extracted head entity.
    Type: Application
    Filed: September 30, 2022
    Publication date: June 22, 2023
    Inventors: Qinghua ZHENG, Kunming MA, Jun LIU, Xingyi LI, Dailusi MA, Jiaxin WANG, Haiping ZHU, Kexin MA, Hongxuan LI, Bifan WEI, Lingling ZHANG
  • Publication number: 20230088766
    Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 23, 2023
    Inventors: Junzhen Qin, Wen Zhao, Lijie Zhang, Lele Cui, Wenping Lou, Qiang Miao, Zhiwei Wang, Ying Zhang, Deepankar Bhattacharjee, Kexin Ma, Alex Yee Kit Ho
  • Publication number: 20230080159
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for storing a codebook in an integrated circuit. One of the methods includes storing, for an integrated circuit that comprises a memory, first data for a codebook in the memory; determining second data for the codebook using the first data; and sending, over a bus, the second data for the codebook to an antenna module separate from the integrated circuit.
    Type: Application
    Filed: August 1, 2022
    Publication date: March 16, 2023
    Inventors: Kexin Ma, Jennifer M. Edwards
  • Publication number: 20230074893
    Abstract: An electronic device receives an indication of a number of physical resource blocks and subcarrier spacing of at least a portion of a transmission channel and determines a dynamic transmission bandwidth, or receives an indication of a modulation coding scheme of the transmission channel and determines a modulation order. The electronic device transmits, using a transmitter, a signal over at least the portion of the transmission channel based on the dynamic transmission bandwidth being less than or equal to a threshold bandwidth, or the modulation order not corresponding to an additional power backoff, using a first power based on a maximum output power capacity of the electronic device and a maximum power reduction. Otherwise, the electronic device transmits the signal over at least the portion of the transmission channel at a second power based on the maximum output power capacity, the maximum power reduction and the additional power backoff.
    Type: Application
    Filed: June 14, 2022
    Publication date: March 9, 2023
    Inventors: Lijie Zhang, Hailong Yang, Kexin Ma, Alex Yee Kit Ho, Feng Zhang, SR., Bing Zhao, Ying Zhang, Zhiwei Wang, Qiang Miao
  • Publication number: 20230073408
    Abstract: Mechanisms are provided for a user equipment (UE) to determine to use a shared resource such as an antenna to access a land based wireless communication system or a satellite communication system. The UE can provide a first priority indication to indicate whether to access the land based wireless communication system based on one or more wireless link metrics of the land based wireless communication system or one or more application metrics for applications using the land based wireless communication system; and provide a second priority indication to indicate whether to access the satellite wireless communication system based on one or more service metrics provided by the satellite wireless communication system. The UE can determine to use the shared resources to access the land based wireless communication system or the satellite communication system based on the first priority indication and the second priority indication.
    Type: Application
    Filed: July 29, 2022
    Publication date: March 9, 2023
    Applicant: Apple Inc.
    Inventors: Hailong YANG, Alex Yee Kit Ho, Guojie Dong, Kexin Ma, Li Sheng, Muthukumaran Dhanapal, Rajesh Ambati
  • Patent number: 11469526
    Abstract: An electronic device may include first and second phased antenna arrays that convey radio-frequency signals at frequencies greater than 10 GHz. The second array may have fewer antennas than the first array. Control circuitry may control the first and second arrays in a diversity mode and in a simultaneous array mode. In the diversity mode, the first array may form a first signal beam while the second array is inactive. When the first array is blocked by an object or otherwise exhibits unsatisfactory performance, the second array may form a second signal beam while the first array is inactive. In the simultaneous mode, the first and second arrays may form a combined array that produces a third signal beam. The combined array may maximize gain. Hierarchical beam searching operations may be performed. The arrays may be distributed across one or more modules.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: October 11, 2022
    Assignee: Apple Inc.
    Inventors: Kexin Ma, Siwen Yong, Jiangfeng Wu, Simon G. Begashaw, Madhusudan Chaudhary, Lijun Zhang, Yi Jiang, Hao Xu, Mattia Pascolini
  • Publication number: 20220094078
    Abstract: An electronic device may include first and second phased antenna arrays that convey radio-frequency signals at frequencies greater than 10 GHz. The second array may have fewer antennas than the first array. Control circuitry may control the first and second arrays in a diversity mode and in a simultaneous array mode. In the diversity mode, the first array may form a first signal beam while the second array is inactive. When the first array is blocked by an object or otherwise exhibits unsatisfactory performance, the second array may form a second signal beam while the first array is inactive. In the simultaneous mode, the first and second arrays may form a combined array that produces a third signal beam. The combined array may maximize gain. Hierarchical beam searching operations may be performed. The arrays may be distributed across one or more modules.
    Type: Application
    Filed: September 24, 2020
    Publication date: March 24, 2022
    Inventors: Kexin Ma, Siwen Yong, Jiangfeng Wu, Simon G. Begashaw, Madhusudan Chaudhary, Lijun Zhang, Yi Jiang, Hao Xu, Mattia Pascolini