Patents by Inventor Xiliang Liu

Xiliang Liu 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: 20240073856
    Abstract: Embodiments are disclosed for one-to-many and many-to-many ranging using narrowband assisted (NBA)-multi-millisecond (MMS) ultra wideband (UWB) protocols. Some embodiments include an initiator device that communicates with many responder devices. For example, the initiator device can transmit a control/initialization poll message via NB signaling that identifies a ranging cycle, and transmit a first set of MMS segments corresponding to the control/initialization poll message. The initiator device can receive a plurality of report frames from two or more responder devices via NB signaling subsequent to transmitting the first set of MMS segments, and transmit within the ranging cycle, a ranging results report message based at least on the plurality of report frames via narrowband signaling.
    Type: Application
    Filed: June 21, 2023
    Publication date: February 29, 2024
    Applicant: Apple Inc.
    Inventors: Jinjing JIANG, Robert GOLSHAN, Yong LIU, Alexander KREBS, Lochan VERMA, Xiliang LUO, Su Khiong YONG
  • Patent number: 11741092
    Abstract: Provided are a method and apparatus for providing a big data analysis service, and a computer readable storage medium. The method for providing a big data analysis service includes: generating, by network data analytics, big data information according to network operation and maintenance data, and sending the big data information to an application through a network exposure function.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 29, 2023
    Assignee: ZTE Corporation
    Inventors: Lin Chen, Zhongyi Cao, Chunxiao Wang, Fangting Zheng, Xiliang Liu
  • Publication number: 20230269627
    Abstract: A method and system for adjusting a service priority of a user, and a storage medium are provided. The method for adjusting a service priority of a user includes: an AF sends service priority change information of UE to a PCF; the PCF notifies an SMF corresponding to an activated PDU Session to deactivate a PDU Session activated by the UE, and to notify the UE to reestablish a PDU Session; an AMF receives a PDU Session establishment request sent by the UE and sends a service authorization request message to the PCF; the PCF modifies a first S-NSSAI into a changed S-NSSAI corresponding to the service priority change information, sends a service authorization response message to the AMF, and establishes a new PDU Session for the UE, wherein an S-NSSAI of the new PDU Session is the changed S-NSSAI.
    Type: Application
    Filed: May 24, 2021
    Publication date: August 24, 2023
    Inventors: Xiaoyong TU, Xiliang LIU, Jianhua LIU
  • Publication number: 20200218715
    Abstract: Provided are a method and apparatus for providing a big data analysis service, and a computer readable storage medium. The method for providing a big data analysis service includes: generating, by network data analytics, big data information according to network operation and maintenance data, and sending the big data information to an application through a network exposure function.
    Type: Application
    Filed: September 22, 2017
    Publication date: July 9, 2020
    Inventors: Lin CHEN, Zhongyi CAO, Chunxiao WANG, Fangting ZHENG, Xiliang LIU
  • Patent number: 8280381
    Abstract: The present invention provides an intra-system handoff method, comprising the following steps: S302, when deciding a handoff of UE to a target base station, a source base station issues a handoff request to the target base station; S304, in response to the handoff request from the source base station, the target base station informs the source base station to conduct handoff for the UE; S306, after the completion of the handoff, the target base station issues an update request to an MME; and S308, in response to the update request from the target base station, the MME conducts Serving GW selection, and further fulfils the intra-system handoff. By the present invention, the target eNodeB need not determine whether access to the Serving GW is available, and accordingly the target eNodeB can avoid from configuring Serving GW.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: October 2, 2012
    Assignee: ZTE Corporation
    Inventors: Jinguo Zhu, Zalfeng Zong, Xiliang Liu, Minya Ye
  • Publication number: 20120069733
    Abstract: The present invention provides a method for processing abnormalities between non-adjacent nodes. which is applied to network element nodes supporting a GPRS Tunneling Protocol (GTP). The GTP node sends a network element-level node abnormality message to other adjacent GTP nodes once the abnormality of an adjacent GTP node is detected. The message comprises information about the abnormal GTP node. The method of the present invention enables the non-adjacent GTP nodes to obtain each other's abnormality therebetween and perform relative processing by introducing the network element-level node abnormality message, thus solves the problem when the GTP is used in the 3GPP system that the resources cannot be recycled in time because of each other's unknown recovery between the non-adjacent nodes, or the problem of a message storm that may caused by the user-level message notification through the intermediate node.
    Type: Application
    Filed: November 23, 2009
    Publication date: March 22, 2012
    Applicant: ZTE CORPORATION
    Inventors: Minya Ye, Yanjing Ding, Xiliang Liu
  • Patent number: 8116272
    Abstract: A method for dealing with the packet domain gateway support node errors, including: a Radio Network Controller (4) sends a notification message to a Serving GPRS Support Node (2) according to an error indication message; in the case of a direct tunnel, the Serving GPRS Support Node initiates a process of deactivating a packet data protocol context to a user equipment (1) according to the received notification message, so as to make the states of the packet data protocol contexts in the user equipment, the Serving GPRS Support Node and a Gateway GPRS Support Node (3) consistent.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: February 14, 2012
    Assignee: ZTE Corporation
    Inventors: Jinguo Zhu, Jiannan Cai, Xiliang Liu
  • Publication number: 20110194406
    Abstract: A method for processing bearer reestablishment failure is disclosed in the present invention for preventing a SGW from doing error processing due to the bearer reestablishment failure in a SAE network. The method comprises the following steps: a mobility management entity (MME) sending a notification message to a service gateway (SGW) after reestablishment of a bearer, the notification message carrying effectiveness parameters indicating the effectiveness state of the bearer, and the SGW storing the effectiveness parameters; the SGW not delivering data packets if the effectiveness state of the bearer is failure when the SGW is to deliver data packets.
    Type: Application
    Filed: December 25, 2008
    Publication date: August 11, 2011
    Inventors: Minya Ye, Yanjing Ding, Xiliang Liu
  • Publication number: 20100182953
    Abstract: The present invention discloses a method for informing Home Subscriber Server (HSS) of Packet Data Network Gateway (PDN GW) address information to be stored in the HSS in the System Architecture Evolution. The method comprises: the Mobility Management Node acquires that the PDN GW address information is not stored in the HSS, or the Mobility Management Node selects another PDN GW; the Mobility Management Node informs the HSS of the PDN GW address information to store. According to the present invention, the HSS can obtain the PDN GW address information directly from the MME without the help of the 3GPP AAA Server and the roaming interface between the PDN GW and the HSS.
    Type: Application
    Filed: December 29, 2007
    Publication date: July 22, 2010
    Applicant: ZTE CORPORATION
    Inventors: Jinguo Zhu, Zaifeng Zong, Min Fang, Xiliang Liu
  • Publication number: 20100046362
    Abstract: “A method for dealing with the packet domain gateway support node errors, including: a Radio Network Controller (4) sends a notification message to a Serving GPRS Support Node (2) according to an error indication message; in the case of a direct tunnel, the Serving GPRS Support Node initiates a process of deactivating a packet data protocol context to a user equipment (1) according to the received notification message, so as to make the states of the packet data protocol contexts in the user equipment, the Serving GPRS Support Node and a Gateway GPRS Support Node (3) consistent.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 25, 2010
    Inventors: Jinguo Zhu, Jiannan Cai, Xiliang Liu
  • Publication number: 20090257402
    Abstract: The present invention provides an intra-system handoff method, comprising the following steps: S302, when deciding a handoff of UE to a target base station, a source base station issues a handoff request to the target base station; S304, in response to the handoff request from the source base station, the target base station informs the source base station to conduct handoff for the UE; S306, after the completion of the handoff, the target base station issues an update request to an MME; and S308, in response to the update request from the target base station, the MME conducts Serving GW selection, and further fulfils the intra-system handoff. By the present invention, the target eNodeB need not determine whether access to the Serving GW is available, and accordingly the target eNodeB can avoid from configuring Serving GW.
    Type: Application
    Filed: June 2, 2009
    Publication date: October 15, 2009
    Inventors: Jinguo ZHU, Zalfeng ZONG, Xiliang LIU, Minya YE