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: 20220022118
    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: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Inventors: Lixiang XU, Xiaowan KE, Hong WANG, Gert Jan VAN LIESHOUT
  • Publication number: 20220015159
    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 performed by a first entity in a wireless communication system is provided. The method includes transmitting connection assistance information to a second entity in the wireless communication system.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Inventors: Lisi LI, Weiwei WANG, Lixiang XU, Hong WANG
  • Publication number: 20220015058
    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 relates to a method for positioning, which includes sending a positioning information request by a first entity to one or more second entities, receiving positioning information response by the first entity. In addition, the disclosure further relates to a method for positioning, which includes sending a request message related to positioning by a first entity to a second entity, and receiving a response message from a second entity by the first entity.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 13, 2022
    Inventors: Lisi LI, Hong WANG, Lixiang XU, Weiwei WANG
  • Publication number: 20210410108
    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 application provides a method for light connection control for a User Equipment (UE), comprising the following steps of: acquiring, by a first radio access network node, light connection information for a UE; storing, by the first radio access network node, the acquired light connection Information; and, performing, by the first radio access network node, light connection control of the UE based on the acquired light connection information for the UE.
    Type: Application
    Filed: September 10, 2021
    Publication date: December 30, 2021
    Inventors: Xiaowan KE, Hong WANG, Lixiang XU
  • Patent number: 11212714
    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 for supporting handover and a corresponding base station and network node for performing the method is provided. The method includes forwarding data to a target base station, receiving a first end marker packet from a core network, and transmitting, for a quality of service, quality of service (QoS), flow for which the data forwarding has been completed, a second end marker packet to the target base station, the end marker packet containing a QoS flow identity (QFI).
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: December 28, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Weiwei Wang
  • Patent number: 11212048
    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 present disclosure discloses a system, a data transmission method and a network equipment supporting a Packet Data Convergence Protocol (PDCP) duplication function. The data transmission method supporting a PDCP duplication function comprises the steps of: transmitting, by a first network equipment, a configuration instruction message of a radio bearer supporting a PDCP duplication function to a second network equipment; and, performing, by the first network equipment and the second network equipment, transmission of a data packet of the radio bearer configured with the PDCP duplication function.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: December 28, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Weiwei Wang, Lixiang Xu, Xiaowan Ke, Hong Wang
  • Patent number: 11206591
    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: December 3, 2019
    Date of Patent: December 21, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang
  • Patent number: 11206613
    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.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: December 21, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Xiaowan Ke
  • Publication number: 20210392538
    Abstract: The present disclosure provides a method and device for configuring a node to transmit and receive data. A second node receives a first message by a first node, wherein the first message comprises at least one of information for determining a channel used by the second node to transmit data received by the second node, or information for determining a radio bearer to transmit data received. Also, the second node transmits the received data mapped to at least one of the channel or the radio bearer used to transmit the data.
    Type: Application
    Filed: September 25, 2019
    Publication date: December 16, 2021
    Inventors: Weiwei WANG, Hong WANG, Lixiang XU
  • Publication number: 20210392704
    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 embodiments of the disclosure provide a session setup method, including: receiving a message for creating a session management context; selecting a user plane functional entity (UPF) for redundant session processing in response to the message; and setting up a packet data unit (PDU) session corresponding to the UPF. There are further provided a session setup method for a base station and related devices. The above technical solutions can realize reliability of service transmission.
    Type: Application
    Filed: November 1, 2019
    Publication date: December 16, 2021
    Inventors: Lixiang XU, Weiwei WANG, Hong WANG, Xiaoning MA
  • Publication number: 20210385055
    Abstract: The present invention relates to the technical field of radio communications, and particularly to a method and apparatus for processing activation/deactivation of inter-eNodeB carrier aggregation. Embodiments of the present invention provide a method for processing activation/deactivation of inter-eNodeB carrier aggregation, comprising the steps of: receiving, by UE, an MAC CE for activation/deactivation of an SCell sent by a master eNodeB or a secondary eNodeB; determining, by the UE, the corresponding SCell; and performing, by the UE, activation/deactivation to the corresponding SCell according to the indication information in the MAC CE for activation/deactivation.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Inventors: Yu QIU, Lixiang XU, Xiaowan KE, Hong WANG
  • Patent number: 11197207
    Abstract: The present application discloses a switch supporting method comprising: an eNB sends a path switching request message to an MME to notify the MME of information on a bearer remaining unchanged; the MME reserves the bearer remaining unchanged and does not trigger a deactivation process for the bearer remaining unchanged; the MME sends a modify bearer request message to an SGW. With the present application, data loss can be avoided and service continuity is ensured when a UE moves in a small cell scenario.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: December 7, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Xiaowan Ke
  • Publication number: 20210377818
    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. According to an aspect of the embodiments of the present disclosure, a method for supporting handover is provided, comprising: receiving a message from a central unit control plane entity of a target base station; receiving a data packet from a source base station; and discarding a packet data convergence protocol (PDCP) service data unit (SDU) including the PDCP sequence number (SN) in the received data packet according to the indication of the message.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 2, 2021
    Inventors: Lixiang XU, Hong WANG, Weiwei WANG
  • Patent number: 11190969
    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: August 10, 2018
    Date of Patent: November 30, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Xiaowan Ke, Hong Wang, Lixiang Xu
  • Patent number: 11190968
    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 present disclosure provides a method for connection set-up and corresponding master base station and secondary base station. The method includes: transmitting a secondary base station setup request message to a secondary base station, and receiving a secondary base station setup response message which comprises mapping information from a quality of service (QoS) flow to a data radio bearer (DRB). The present disclosure further provides a method of requesting a secondary cell group (SCG) configuration and corresponding master base station and secondary base station.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: November 30, 2021
    Inventors: Xiaowan Ke, Lixiang Xu, Hong Wang
  • Patent number: 11160002
    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: August 13, 2018
    Date of Patent: October 26, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Xiaowan Ke, Weiwei Wang
  • Patent number: 11153787
    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: May 4, 2018
    Date of Patent: October 19, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Hong Wang, Xiaowan Ke
  • Publication number: 20210321474
    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: Application
    Filed: May 7, 2021
    Publication date: October 14, 2021
    Inventors: Lixiang Xu, Hong Wang
  • Patent number: 11147111
    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: Grant
    Filed: June 16, 2020
    Date of Patent: October 12, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Lixiang Xu, Xiaowan Ke, Hong Wang
  • Publication number: 20210314823
    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: Application
    Filed: June 15, 2021
    Publication date: October 7, 2021
    Inventors: Lixiang XU, Hong WANG, Huarui LIANG