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).

  • 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
  • Publication number: 20230199582
    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: Application
    Filed: February 14, 2023
    Publication date: June 22, 2023
    Inventors: Lixiang XU, Hong WANG, Xiaoning MA, Weiwei WANG
  • Publication number: 20230199558
    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). The method for operating a primary base station in a wireless communication system is provided. The method includes transmitting, to a secondary base station, an addition request message, wherein the addition request message carries information of a secondary cell group (SCG) split bearer; and receiving, from the secondary base station, a response message of the addition request message.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Inventors: Hong WANG, Lixiang XU, Xiaowan KE
  • Patent number: 11683736
    Abstract: The present application discloses a method and eNB equipment for supporting seamless handover. The method comprises the following steps of: receiving, by a target eNB, random access information or an RRC connection reconfiguration completion message from a UE; transmitting, by the target eNB, a data transmission stopping indication message to a source eNB; and, stopping, by the source eNB, transmitting downlink data to the UE, and/or stopping, by the source eNB, receiving uplink data from the UE. The present invention further provides several other methods and eNB equipments for supporting seamless handover. By the methods for supporting seamless handover provided by the present invention, the delay of data transmission and the unnecessary data transmission or unnecessary data monitoring of a source eNB can be avoided, the waste of resources and the power consumption can be reduced, and the missing and duplication transmission of data can be avoided.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: June 20, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Xiaowan Ke, Hong Wang, Gert Jan Van Lieshout
  • Patent number: 11677339
    Abstract: The present disclosure provides a start-up initialization circuit of motor drive system, including a power amplitude detecting and internal power supply module, a controlled delay module, a waveform shaping module and a power supply judging and adjusting module integrated on a same substrate, configured to detect and manage a voltage change of each node of a drive system in real time to cause a motor drive system to realize a start-up initialization process transit from an off state to a normal working state. The present disclosure finally forms the start-up initialization circuit of motor drive system by integrating the power amplitude detecting and internal power supply module, the controlled delay module, the waveform shaping module and the power supply judging and adjusting module and integrating on a single chip, which greatly ensures the reliability of power on and start-up of the motor drive system.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: June 13, 2023
    Assignee: Hefei Aichuangwei Electronic Technology Co., Ltd.
    Inventors: Jun Pan, Lixiang Xu, Lixiang Wen, Lei Qiu, Dianwu Li, Wei Wang, Lei Han, Ke Wang
  • Patent number: 11659450
    Abstract: A method for supporting indication of a failure event to a source access system is provided. The method includes notifying, by the source access system, information of a source cell to a target access system, routing, by the target access system, a message to the base station or the base station controller of the source access through a core network by use of the information of the source cell received from the source access system when the target access system needs to transmit a message to the source access system. By use of the method provided by the present disclosure, a problem of mobility robustness optimization (MRO) among different radio access technology (RAT) may be notified to the source access system, so as to avoid impact for a terminal, reduce operator configuration.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: May 23, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Huarui Liang
  • Patent number: 11653253
    Abstract: The disclosure provides a method and an apparatus for operating and controlling a data flow. The method includes steps of: acquiring, by a first node, information on a Quality-of-Service (QoS) flow and/or resource information on a node; and deciding, by the first node, whether to accept the QoS flow and/or performance result information for the QoS flow, according to the acquired resource information on the node and/or the acquired information on the QoS flow.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: May 16, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiaowan Ke, Hong Wang, Lixiang Xu