Patents by Inventor Xiangkai Guan

Xiangkai Guan 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).

  • Indirect Single Radio Voice Call Continuity
    Patent number: 11963045
    Abstract: Methods, systems, and devices for wireless communications are described. An access and mobility management function (AMF) associated with a first radio access network (RAN) may identify a user equipment (UE) connected to a source base station of the first RAN. The AMF may receive a handover message including a voice call continuity handover trigger message indicating a handover of the UE to a target base station associated with a second RAN. In some examples, the AMF may transmit a bypass handover message to a second network device based a on the received handover message. In some cases, the bypass handover message may include the voice call continuity handover trigger message. In some examples, the second network device is a mobility management entity (MME) associated with an Evolved Universal Terrestrial Radio Access Network (E-UTRAN).
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: April 16, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Juan Zhang, Xipeng Zhu, Haris Zisimopoulos, Xiangkai Guan
  • INDIRECT SINGLE RADIO VOICE CALL CONTINUITY
    Publication number: 20210185567
    Abstract: Methods, systems, and devices for wireless communications are described. An access and mobility management function (AMF) associated with a first radio access network (RAN) may identify a user equipment (UE) connected to a source base station of the first RAN. The AMF may receive a handover message including a voice call continuity handover trigger message indicating a handover of the UE to a target base station associated with a second RAN. In some examples, the AMF may transmit a bypass handover message to a second network device based a on the received handover message. In some cases, the bypass handover message may include the voice call continuity handover trigger message. In some examples, the second network device is a mobility management entity (MME) associated with an Evolved Universal Terrestrial Radio Access Network (E-UTRAN).
    Type: Application
    Filed: October 26, 2018
    Publication date: June 17, 2021
    Inventors: Juan Zhang, Xipeng Xhu, Haris Zisimopoulos, Xiangkai Guan