Patents by Inventor Yifan ZHU

Yifan ZHU 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: 20220417803
    Abstract: Apparatuses, systems, and methods for application awareness interworking between cellular systems. A wireless device may be configured to initiate an application during an ongoing procedure serviced by a first operating according to a first radio access technology (RAT), receive, from a first cellular system, an indication to switch to a second cellular system operating according to a second RAT, and delay the switch to the second cellular system until completion of the ongoing procedure. A network function may be configured to detect initiation of an application during an ongoing procedure serviced by a cellular system operating according to a first RAT, the application having associated application preferences, determine that the associated application preferences indicate a switch to a second cellular system operating according to a second RAT, and delay the switch to the second cellular system until completion of the ongoing procedure.
    Type: Application
    Filed: January 3, 2020
    Publication date: December 29, 2022
    Inventors: Vijay Venkataraman, Dawei Zhang, Huarui Liang, Krisztian Kiss, Lakshmi N Kavuri, Srinivasan Nimmala, Yifan Zhu
  • Patent number: 11540195
    Abstract: Apparatuses, systems, and methods for a wireless device to perform detection and mitigation of data stalls. The mitigation may occur during and/or at initiation of a data connection. The wireless device may establish a data connection(s) with a network over a Wi-Fi or cellular interface and monitor the data connection(s) for a data stall condition(s)/hint(s). The wireless device may perform a remedial action(s) responsive to detection of a data stall condition(s)/hint(s), including initiating a service recovery of the cellular interface, initiating a radio access technology (RAT) upgrade procedure, and/or initiating a handover procedure to a neighbor cell.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: December 27, 2022
    Assignee: Apple Inc.
    Inventors: Vijay Venkataraman, Amitabha Ghosh, Eyad Al-Shemali, Franco Travostino, Jinghua Ling, Lakshmi N. Kavuri, Muhammad R. Dar, Murtaza A. Shikari, Muthukumaran Dhanapal, Pankaj Subhash Vasandani, Ravish Samuel, Samuel J. Miller, Shivani Suresh Babu, Sree Ram Kodali, Srinivasan Nimmala, Srirang A. Lovlekar, Yifan Zhu, Irfan Khasim Mohammed, Sofheem Mohammed, Raghuram Mungara, Vijay Gadde, Sharad Garg
  • Patent number: 11540185
    Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to prioritize cells that support EN-DC over similar cells not supporting EN-DC. The UE may be configured to perform one or more measurement scans associated with cell selection and/or cell re-selection and may determine whether at least two LTE cells meet a selection criteria based on RSRP and/or SNR measurements. The UE may be configured to, in response to determining that at least two LTE cells meet the selection criteria, prioritize a first LTE cell of the at least two LTE cells over a second LTE cell of the at least two LTE cells based, at least in part, on support EN-DC. The first LTE cell may indicate support of EN-DC, e.g., via a ULI IE included in a SIB2 broadcast by the first LTE cell. The UE may be configured to select the first LTE cell for camping.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: December 27, 2022
    Assignee: Apple Inc.
    Inventors: Sagar B. Shah, Alosious Pradeep Prabhakar, Kanuganti Rajeswar Reddy, Lakshmi N. Kavuri, Li Su, Manish G. Vemulapalli, Muthukumaran Dhanapal, Ozgur Ekici, Rangakrishna Nallandigal, Sachin J. Sane, Shivani Suresh Babu, Sree Ram Kodali, Srinivasan Nimmala, Vijay Venkataraman, Yifan Zhu
  • Patent number: 11528679
    Abstract: Apparatuses, systems, and methods for a wireless device to perform methods for de-registration of the wireless device from a first access type over a second access type. Methods also include procedures for maintaining state machines associated with both access types as well as procedures to determine a connection for re-transmitting a de-registration request and to avoid collisions between procedures associated with the first and second access types. Further, methods include an information element configured to indicate which access type has been de-registered.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: December 13, 2022
    Assignee: Apple Inc.
    Inventors: Vijay Venkataraman, Krisztian Kiss, Lakshmi N. Kavuri, Sang Ho Baek, Shivani Suresh Babu, Utkarsh Kumar, Viswanath Nagarajan, Yifan Zhu, Hariharan Sukumar
  • Publication number: 20220386108
    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) and/or cellular network to perform to perform capability updates. Under at least some circumstances, the UE may use a non-cellular (e.g., non-3GPP) access to transmit updated capability information to a cellular network. Elements of the core of the cellular network may provide an identifier corresponding to the updated capability information to the UE for use in future registrations with the cellular network. Further, the core network may provide the updated capability information to a cellular radio access network associated the cellular network. The UE and the cellular network may communicate according to the updated capability.
    Type: Application
    Filed: January 3, 2020
    Publication date: December 1, 2022
    Inventors: Vijay Venkataraman, Dawei Zhang, Haijing Hu, Krisztian Kiss, Lakshmi N. Kavuri, Sridhar Prakasam, Srinivasan Nimmala, Utkarsh Kumar, Yifan Zhu
  • Publication number: 20220369402
    Abstract: Apparatus and methods to support parallel access to services of multiple subscriber identity modules (SIMs) and/or electronic SIMs (eSIMs) by a wireless device are disclosed. The wireless device is a single-radio wireless device that includes wireless circuitry that supports an active voice or video connection via a single radio access network of a cellular wireless network at a time. To send or receive data for a second SIM/eSIM, when an active voice or video connection for a first SIM/eSIM uses the wireless circuitry, the single-radio wireless device can i) establish parallel, linked protocol data unit (PDU) sessions for different SIMs, ii) multiplex traffic for different SIMs over a common radio connection with SIM information embedded in protocol headers for routing by network equipment, and/or iii) use an additional dedicated bearer using a first, active SIM for each data network name (DNN) over which to route for a second, suspended SIM.
    Type: Application
    Filed: June 3, 2022
    Publication date: November 17, 2022
    Inventors: Srinivasan NIMMALA, Kavya B. RAVIKUMAR, Krisztian KISS, Lakshmi N. KAVURI, Utkarsh KUMAR, Vijay VENKATARAMAN, Yifan ZHU, Alosious Pradeep PRABHAKAR, Mohammed SADIQUE
  • Patent number: 11503527
    Abstract: Techniques are disclosed relating to handover of WLAN voice calls to one or more cellular networks. In some embodiments, a device is configured to perform voice communications over one or more wireless local area networks, communicate with a first network using a first cellular radio access technology (RAT), and communicate with a second network using a second cellular RAT. The device may store, based on communications via the first network, information indicating that the first network does not support voice communications for the apparatus. The device may handover a voice call from a wireless local network directly to the second cellular RAT, based on the stored information and without handover of the voice call to the first cellular RAT, based on call conditions on the wireless local area network.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: November 15, 2022
    Assignee: Apple Inc.
    Inventors: Yifan Zhu, Vijay Venkataraman, Viswanath Nagarajan, Sang Ho Baek, Lakshmi N. Kavuri, Utkarsh Kumar, Krisztian Kiss, Shivani Suresh Babu, Srinivasan Nimmala
  • Patent number: 11480722
    Abstract: This invention relates to an optical expander device with its display device, and a method of light output and image display, including a waveguide plate, the first optical diffractive in-coupling element, the first retrieval unit, the second retrieval unit, the second optical diffractive expander element, the third optical diffractive expander element, and the fourth optical diffractive out-coupling element. The fourth optical diffractive out-coupling element forms part of the first output light (OB4), by diffracting guided light, the third retrieval light (B3a), and the fourth retrieval light (B4a) to the same direction; simultaneously, the fourth optical diffractive out-coupling element diffracts the first direct-through light (B1b) and the second direct-through light (B2b) to the same direction, forming the other part of the first output light (OB4). This device of the present disclosure may greatly improve the uniformity of the intensity distribution of the output light.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: October 25, 2022
    Inventors: Houqiang Jiang, Tapani Kalervo Levola, Yisheng Zhu, Yifan Zhu
  • Publication number: 20220232381
    Abstract: An SVM-based secure access method for wireless terminals. Step 1, establish a wireless network security model based on the communication scenarios of the wireless terminal and the wireless base station; establish the channel feature vectors based on the wireless network security model and the frames received by the wireless base station; Step 2, use the pre-trained SVM model to examine the channel feature vectors of the frames, determining whether the frames are legitimate signals; Step 3, determine whether the wireless terminal with at least one frame sent is a legitimate terminal based on whether at least one of the frames sent is a legitimate signal. The frames sent by the wireless terminals that access the wireless base station are examined to effectively determine legitimate terminals by improving the SVM parameter combination optimization method of differential evolution and the differential evolution method with an adaptive improvement of the control parameters.
    Type: Application
    Filed: September 30, 2021
    Publication date: July 21, 2022
    Applicant: State Grid Jiangsu Electric Power Co., Ltd
    Inventors: Hong ZHU, Wendi WANG, Dongxu ZHOU, Lisha GAO, Shaojun LIU, Hao YU, Honghua XU, Zhengyi ZHU, Su PAN, Tianyi LI, Yifan ZHU, Linqing YANG
  • Publication number: 20220184411
    Abstract: Methods of the present invention comprise photoinactivation of catalase in combination with low-concentration peroxide solutions and/or ROS generating agents to provide antibacterial effects.
    Type: Application
    Filed: March 3, 2022
    Publication date: June 16, 2022
    Inventors: Pu-Ting Dong, Jie Hui, Ji-Xin Cheng, Yifan Zhu
  • Patent number: 11356837
    Abstract: A method performed by a station that includes receiving information from a cell of a Public Land Mobile Network (PLMN), determining whether the information indicates the cell supports circuit switched fallback (CSFB) voice calls, when the CSFB voice calls are not supported, determining whether at least one packet switched voice property of the station satisfies a predetermined condition and attaching to the cell of the PLMN when the predetermined condition is satisfied. A further method performed by a station connected to a PLMN that includes identifying cells of the PLMN available for the station to camp on, determining whether the station is capable of executing packet switched calls, when the station is not capable of executing packet switched calls, determining whether the identified cells have a neighbor cell that supports CSFB voice calls and prioritizing the cells that are identified as having neighbor cells that support CSFB voice calls.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: June 7, 2022
    Assignee: Apple Inc.
    Inventors: Gahima S. Mbonye, Vijay Venkataraman, Srinivasan Nimmala, Thanigaivelu Elangovan, Abdul-Munem Ai-Khudairi, Anish K. Goyal, Rafael L. Rivera-Barreto, Yifan Zhu, Ryan Booth, Lakshmi Kavuri, Venkateswara Rao Manepalli
  • Patent number: 11355922
    Abstract: Provided are a ground fault protection method and apparatus for a photovoltaic station output transmission line. A circuit breaker on a photovoltaic side is controlled by a control element. Whether measured zero sequence impedance on the photovoltaic side of a segment line has a large variation before and after an action of power grid side distance protection is determined, the variation of the measured zero sequence impedance is inputted into the control element, in condition that the variation of the measured zero sequence impedance is less than a setting value, a tripping signal is outputted to the circuit breaker on the photovoltaic side to isolate the fault; and in condition that the variation of the measured zero sequence impedance is greater than the setting value, photovoltaic side distance protection is not started.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: June 7, 2022
    Assignees: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. TAIZHOU POWER SUPPLY COMPANY, STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITY
    Inventors: Ping Zhao, Fengyuan Wang, Chi Zhang, Yuande Zheng, Yudong Fang, Hua Xu, Zaibing Zhou, Tao Zheng, Yifan Zhu, Chenjing Xu, Tao Zhu, Kang Wang, Zhen Huang, Guode Ying
  • Patent number: 11357067
    Abstract: Apparatus and methods to support parallel access to services of multiple subscriber identity modules (SIMs) and/or electronic SIMs (eSIMs) by a wireless device are disclosed. The wireless device is a single-radio wireless device that includes wireless circuitry that supports an active voice or video connection via a single radio access network of a cellular wireless network at a time. To send or receive data for a second SIM/eSIM, when an active voice or video connection for a first SIM/eSIM uses the wireless circuitry, the single-radio wireless device can i) establish parallel, linked protocol data unit (PDU) sessions for different SIMs, ii) multiplex traffic for different SIMs over a common radio connection with SIM information embedded in protocol headers for routing by network equipment, and/or iii) use an additional dedicated bearer using a first, active SIM for each data network name (DNN) over which to route for a second, suspended SIM.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: June 7, 2022
    Inventors: Srinivasan Nimmala, Kavya B. Ravikumar, Krisztian Kiss, Lakshmi N. Kavuri, Utkarsh Kumar, Vijay Venkataraman, Yifan Zhu, Alosious Pradeep Prabhakar, Mohammed Sadique
  • Publication number: 20220141920
    Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform methods for enhancement of multi-SIM devices, such as UE 106. A network may increase paging retries for known MU-SIM devices, e.g., based on an indication of capabilities from a MU-SIM device. The indication may be via a NAS registration request, an RRC capability procedure, and/or an RRC UE assistance procedure. Additionally, a network may include an indication of a paging priority to the UE. The UE may then determine a response to the page based, at least in part, on the indicated priority. Further, the UE may indicate a tune-away to the network. The indication of the tune-away may include a cause and/or duration for the tune-away and may be provided at an RRC level or a network access stratum (NAS) level.
    Type: Application
    Filed: January 18, 2022
    Publication date: May 5, 2022
    Inventors: Lakshmi N. Kavuri, Alosious Pradeep Prabhakar, Krisztian Kiss, Muthukumaran Dhanapal, Sang Ho Baek, Shivani Suresh Babu, Srinivasan Nimmala, Utkarsh Kumar, Vijay Venkataraman, Viswanath Nagarajan, Yifan Zhu
  • Publication number: 20220132287
    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE), manufacturer server, and/or cellular network to perform radio capability signaling. A new type of UE radio capability identifier is provided which may allow a network to distinguish between similar UEs that have or have not implemented a capability update. In order to perform a forced capability update, a manufacturer may issue information about the update to a cellular network (and receive acknowledgement of the information) prior to pushing the update to UEs. In response to an unforced capability update, a cellular network may maintain multiple UE radio capability identifiers for similar UEs which have or have not implemented the update. A UE radio capability identifier may be adjusted dynamically in response to temporary changes in the UE's capability.
    Type: Application
    Filed: January 7, 2022
    Publication date: April 28, 2022
    Inventors: Alosious Pradeep Prabhakar, Mohammed Sadique, Vijay Venkataraman, Krisztian Kiss, Jordi Agud Ruitz, Yip Pong Herbert Wong, Kok Yin Chan, Srinivasan Nimmala, Lakshmi N. Kavuri, Yifan Zhu, Utkarsh Kumar
  • Patent number: 11298563
    Abstract: Methods of the present invention comprise photoinactivation of catalase in combination with low-concentration peroxide solutions and/or ROS generating agents to provide antibacterial effects.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: April 12, 2022
    Assignee: Pulsethera, Inc.
    Inventors: Pu-Ting Dong, Jie Hui, Ji-Xin Cheng, Yifan Zhu
  • Patent number: 11284318
    Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may determine that it does not have cellular service and determine first information based on a last camped cell. A time period during which the first information was acquired may be determined and one or more frequency scans may be performed. The frequency scans may be limited to a set of frequencies based in part on the time period. Thus, if the time period is less than a first value, the set of frequencies may include a first set of frequencies and if the time period is greater than the first value but less than a second value, the set of frequencies may include the first set of frequencies and a second set of frequencies.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Jianxiong Shi, Lakshmi N. Kavuri, Madhusudan Chaudhary, Thanigaivelu Elangovan, Viswanath Nagarajan, Yifan Zhu
  • Patent number: 11259161
    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE), manufacturer server, and/or cellular network to perform radio capability signaling. A new type of UE radio capability identifier is provided which may allow a network to distinguish between similar UEs that have or have not implemented a capability update. In order to perform a forced capability update, a manufacturer may issue information about the update to a cellular network (and receive acknowledgement of the information) prior to pushing the update to UEs. In response to an unforced capability update, a cellular network may maintain multiple UE radio capability identifiers for similar UEs which have or have not implemented the update. A UE radio capability identifier may be adjusted dynamically in response to temporary changes in the UE's capability.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: February 22, 2022
    Assignee: Apple Inc.
    Inventors: Alosious Pradeep Prabhakar, Mohammed Sadique, Vijay Venkataraman, Krisztian Kiss, Jordi Agud Ruiz, Yip Pong Herbert Wong, Kok Yin Chan, Srinivasan Nimmala, Lakshmi N. Kavuri, Yifan Zhu, Utkarsh Kumar
  • Patent number: 11252203
    Abstract: A computer device receives a session message in a group session on a social networking application. The session message includes a child application identifier corresponding to a child application. The device determines a session identifier corresponding to the group session to which the session message belongs. The device transmits the session identifier to the child application and receives from the child application a request for page data corresponding to the session identifier. In accordance with the request, the device obtains the page data corresponding to the child application identifier. The device renders a child application page in a child application according to the obtained data. In accordance with detecting a trigger event corresponding to the child application identifier on the session message, the device invokes the child application in the social networking application.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: February 15, 2022
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Weibang Luo, Jisheng Huang, Haojun Hu, Qingjie Lin, Wenxiao Zheng, Yi Duan, Zhaowei Wang, Chao Lin, Canhui Huang, Hao Hu, Zhe Cheng, Yu Wu, Xuyu Gui, Zhaopeng Liang, Yifan Zhu, Yuyang Peng, Kunli Deng
  • Patent number: 11252780
    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to determine whether or not a mobile alert message is in effect. Such a determination may be based on a cancellation message (or other message(s) received from the network, possibly in response to a query from the UE. Alternatively or additionally, such a determination may be based on monitoring rebroadcasts of the alert and/or determining that no rebroadcast has been received for a period of time.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 15, 2022
    Assignee: Apple Inc.
    Inventors: Utkarsh Kumar, Srinivasan Nimmala, Yifan Zhu, Lakshmi N. Kavuri, Vijay Venkataraman, Krisztian Kiss