Patents by Inventor Lester K. CHAN

Lester K. CHAN 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).

  • Reduced power roaming by an accessory device
    Patent number: 11856510
    Abstract: A user equipment (UE) is configured to prioritize a plurality of Public Land Mobile Networks (PLMNs) from an aggregate roaming priority public land mobile network (RPPLMN) list containing the plurality of PLMNs into a plurality of prioritized PLMNs and connect to a selected PLMN from the plurality of prioritized PLMNs based on a priority of the selected PLMN. The UE is further configured to determine if an application processor (AP) assisted location service is available, wherein the AP-assisted service is configured to identify a plurality of deployed PLMNs and a plurality of frequencies used by the plurality of deployed PLMNs at a current geographical location of the UE and when the AP) assisted location service is available, determining if a registered PLMN (RPLMN) is valid in a current mobile country code (MCC).
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: December 26, 2023
    Assignee: Apple Inc.
    Inventors: Xiangpeng Jing, Sivaramachandran Ganesan, Karthik Anantharaman, Lester K. Chan, Qi He
  • Reduced Power Roaming by an Accessory Device
    Publication number: 20210400575
    Abstract: A user equipment (UE) is configured to prioritize a plurality of Public Land Mobile Networks (PLMNs) from an aggregate roaming priority public land mobile network (RPPLMN) list containing the plurality of PLMNs into a plurality of prioritized PLMNs and connect to a selected PLMN from the plurality of prioritized PLMNs based on a priority of the selected PLMN. The UE is further configured to determine if an application processor (AP) assisted location service is available, wherein the AP-assisted service is configured to identify a plurality of deployed PLMNs and a plurality of frequencies used by the plurality of deployed PLMNs at a current geographical location of the UE and when the AP) assisted location service is available, determining if a registered PLMN (RPLMN) is valid in a current mobile country code (MCC).
    Type: Application
    Filed: June 17, 2021
    Publication date: December 23, 2021
    Inventors: Xiangpeng JING, Sivaramachandran GANESAN, Karthik ANANTHARAMAN, Lester K. CHAN, Qi HE