Patents by Inventor Lixiang Xu

Lixiang Xu 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: 20230284079
    Abstract: Methods and apparatuses are provided in a wireless communication system. A first message is transmitted, to a secondary base station, for querying a first secondary cell group (SCG) configuration associated with the secondary base station. A second message is received from the secondary base station after transmitting the first message. The first message includes information indicating that the master base station requests the first SCG configuration, and the second message includes information on the first SCG configuration.
    Type: Application
    Filed: May 12, 2023
    Publication date: September 7, 2023
    Inventors: Xiaowan KE, Lixiang XU, Hong WANG
  • Publication number: 20230284076
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method for supporting data transmission, comprising: transmitting, by a first node, a first message including a leg identity and a quality of service (QoS) parameter to a third node; and receiving, by the first node, a second message from the third node; wherein the second message is obtained by the third node based on the first message and a third message for reporting status of transmission leg.
    Type: Application
    Filed: June 18, 2021
    Publication date: September 7, 2023
    Inventors: Xiaoning MA, Yanru WANG, He WANG, Hong WANG, Lixiang XU, Weiwei WANG
  • Patent number: 11743788
    Abstract: A method for supporting fast recovery of a User Equipment (UE) includes performing, by a serving base station, UE context synchronization for one or more other base stations in a related small cell cluster when a UE accesses the serving base station, performing, by a base station that the UE performs a radio resource control (RRC) connection re-establishment, the RRC connection re-establishment for the UE according to UE context saved in a synchronization process. The present also discloses another method and system for supporting UE fast recovery. By applying the technical solution disclosed by the present disclosure, when the UE moves in a small cell scenario, the UE can be recovered quickly in the case of a failure, so as to avoid the UE returns to an idle mode, avoid data loss, guarantee business continuity, and improve UE experience.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: August 29, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Huarui Liang
  • Patent number: 11736971
    Abstract: The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The disclosure provides a method and apparatus for configuring a relay node. A first node transmits to a second node a message that carries information on a radio bearer for a user accessing the second node. Configuration of the radio bearer for data transmission in a multi-hop network is realized through the above method and apparatus.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: August 22, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weiwei Wang, Hong Wang, Lixiang Xu
  • Publication number: 20230262555
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and equipment for handover are provided.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 17, 2023
    Inventors: Lixiang XU, Hong WANG
  • Patent number: 11729693
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention provides a method of a base station for supporting an inter-system handover from an evolved packet system (EPS) system to a 5th generation (5G) system.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: August 15, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Xiaowan Ke, Weiwei Wang
  • Patent number: 11722933
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE).
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: August 8, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Xiaowan Ke
  • Publication number: 20230247466
    Abstract: The present application discloses a node, a UE and methods thereof. A method performed by a third node in a communication system includes receiving information about a first measurement from a first node; and in response, sending configuration information of the first measurement to the first node; or sending a first measurement report received from a UE to a fourth node.
    Type: Application
    Filed: January 30, 2023
    Publication date: August 3, 2023
    Inventors: Lisi LI, Lixiang Xu, Hong Wang
  • Publication number: 20230239745
    Abstract: A radio access network handover method of a base station in a 5G radio access network (5G-RAN) is are disclosed. The method comprising: determining handing over a user equipment (UE) to an Evolved Universal Terrestrial Radio Access Network (E-UTRAN); transmitting a handover requirement message to an Access and Mobility Management Function (AMF); receiving a handover command message from the AMF and transmitting the handover command message to the UE, the handover message such that the UE is handed over from the 5G-RAN to the E-UTRAN; and performing indirect data forwarding to a base station in the E-UTRAN.
    Type: Application
    Filed: March 27, 2023
    Publication date: July 27, 2023
    Inventors: Xiaowan KE, Hong WANG, Lixiang XU
  • Publication number: 20230239947
    Abstract: The present application relates to a method for adding a node in a mobile communication system. A method performed by a first node in a mobile communication system is provided. User equipment (UE) is connected to the first node and a second node. The method comprises: sending a message used for requesting or requiring an addition of a third node; and receiving an acknowledge message in response to the message.
    Type: Application
    Filed: January 24, 2023
    Publication date: July 27, 2023
    Inventors: Yu PAN, Lixiang XU, Hong WANG
  • Publication number: 20230232203
    Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first entity in a wireless communication network is provided. The method includes sending a first message including a user equipment (UE) model information request to a second entity, and receiving a second message including UE model information from the second entity in response to sending the first message.
    Type: Application
    Filed: January 18, 2023
    Publication date: July 20, 2023
    Inventors: Yanru WANG, Hong WANG, Lixiang XU, Weiwei WANG, Xiaoning MA
  • Patent number: 11706829
    Abstract: A method for data forwarding in a small cell system comprises: sending by a master base station (MeNB) to a target secondary base station (SeNB) information of a source SeNB or a source SeNB cell where a user equipment (UE) is located; determining by the target SeNB whether a direct data forwarding is feasible; notifying, by the target SeNB, the MeNB whether the direct data forwarding is feasible; and determining by the MeNB whether it is a direct data forwarding or an indirect data forwarding. The method for data forwarding provided in the present application may support both the direct data forwarding and the indirect data forwarding based on actual situation of the network, reduce data loss and failure of data forwarding, and improve the efficiency of data forwarding.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: July 18, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang
  • Patent number: 11700552
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method and device for switching a serving cell.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: July 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weiwei Wang, Xiaowan Ke, Hong Wang, Lixiang Xu
  • Publication number: 20230217514
    Abstract: An embodiment of the present disclosure may provide an inter-MeNB handover method in a small cell system, including: making, by a source MeNB and/or target MeNB, a determination as to whether to maintain a SeNB when handover is performed; and triggering different handover processes according to a result of the determination as to whether to maintain the SeNB. Another embodiment of the present disclosure may further provide an inter-MeNB handover device in a small cell system. With the inter-MeNB handover method and device in a small cell system provided by the present disclosure, unnecessary deletion and re-establishment of the bearers at the SeNB for the UE may be reduced. False bearer deletion may be avoided and data forwarding may be reduced. Furthermore, the SeNB may be maintained according to network deployment and SGW re-selection may be supported. Therefore, system capacity and transmission speed of the data may be improved.
    Type: Application
    Filed: February 24, 2023
    Publication date: July 6, 2023
    Inventors: Lixiang XU, Xiaowan KE, Hong WANG
  • Publication number: 20230216893
    Abstract: A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes generating a report, and transmitting the report to an access node in the wireless communication system, wherein the report is generated in or after an Internet Protocol (IP) Multimedia Subsystem (IMS) voice related process of the UE.
    Type: Application
    Filed: January 4, 2023
    Publication date: July 6, 2023
    Inventors: Xiaoning MA, Lixiang XU, Hong WANG, Weiwei WANG
  • Patent number: 11696199
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and equipment for handover are provided.
    Type: Grant
    Filed: November 26, 2021
    Date of Patent: July 4, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang
  • Patent number: 11696169
    Abstract: Methods and apparatuses are provided in a wireless communication system. A first message is transmitted, from a master base station, to a secondary base station, for requesting the secondary base station to allocate resources for a dual connectivity (DC) operation. A second message is received from the secondary base station, after transmitting the first message. A third message is transmitted to the secondary base station, after receiving the second message. The first message includes a quality of service (QoS) flow identifier (ID) and available data radio bearer (DRB) IDs. The second message includes the QoS flow ID and a DRB ID corresponding to the QoS flow ID. The third message includes tunnel information for the DRB ID including an Internet protocol (IP) address and a tunnel endpoint identifier (TEID).
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: July 4, 2023
    Inventors: Xiaowan Ke, Lixiang Xu, Hong Wang
  • Patent number: 11696132
    Abstract: The present invention provides a method of how the serving base station notifies UE of the encryption information used in the re-establishment process, how the serving base station finds the UE context information and authenticates the UE, in the 5G architecture. By means of the method of the present invention, the message between the RRC message and the base station can be optimized, the UE is correctly authenticated, and the re-establishment failure is avoided.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: July 4, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong Wang, Lixiang Xu, Weiwei Wang
  • Publication number: 20230209396
    Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system. A method performed by a first integrated access and backhaul (IAB) node which is a F1-terminating IAB donor node in a wireless communication system is provided. The method includes receiving, from a second IAB node which is a non-F1-terminating IAB donor node, a first message including backhaul (BH) related information for at least one IAB node of a non-F1-terminating topology associated with the second IAB node and transmitting, to a third IAB node which is an IAB node connected with the first IAB node and the second IAB node, a second message including configuration information for the third IAB node.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventors: Weiwei WANG, Hong WANG, Lixiang XU
  • Publication number: 20230199541
    Abstract: The present disclosure provides a method and device for configuration of minimization of drive tests, in which a first node sends MDT status information to a second node; and the second node decides whether it is possible to configure a management-based logged MDT measurement for a UE. It is avoided that the MDT configuration information that is currently still valid is erroneously overwritten when the network reconfigures the MDT for the UE.
    Type: Application
    Filed: May 21, 2021
    Publication date: June 22, 2023
    Inventors: Hong WANG, Lixiang XU, Weiwei WANG