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    Method and equipment for handover
    134.
    发明授权
    Method and equipment for handover 有权

    公开(公告)号：US11696199B2

    公开(公告)日：2023-07-04

    申请号：US17535876

    申请日：2021-11-26

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Lixiang Xu ,  Hong Wang

    IPC: H04W36/00 ,  H04W36/08 ,  H04W76/12 ,  H04W76/11 ,  H04W8/08 ,  H04W28/02 ,  H04W48/16 ,  H04W80/10

    CPC classification number: H04W36/08 ,  H04W8/08 ,  H04W28/0268 ,  H04W48/16 ,  H04W76/11 ,  H04W76/12 ,  H04W80/10

    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. The method includes informing, by a source base station, a source core network whether a direct data forwarding path is available, determining, by the source core network, whether to use direct data forwarding or indirect data forwarding, informing, by the source core network, a target core network of information of direct data forwarding, indirect data forwarding or data forwarding being not possible, informing, by the target core network, a target base station of the information of direct data forwarding, indirect data forwarding or data forwarding being not possible, and allocating, by the target base station, tunnel information for data forwarding.

    Method for supporting handover in mobile communication network
    135.
    发明授权
    Method for supporting handover in mobile communication network 有权

    公开(公告)号：US11611917B2

    公开(公告)日：2023-03-21

    申请号：US16947231

    申请日：2020-07-23

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Lixiang Xu ,  Hong Wang ,  Xiaoning Ma ,  Weiwei Wang

    IPC: H04W36/00 ,  H04W36/08

    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). According to embodiments, an access and mobility management function (AMF) comprises at least one transceiver; and at least one processor, wherein the at least one processor is configured to receive, a mobility management entity (MME) for an evolved node B (eNB), a message associated with a handover required message for an inter-system handover from an evolved packet system (EPS) to 5G system (5GS) with a secondary gNB (SgNB) used as a target next generation node B (gNB), wherein the SgNB and the target gNB are co-located and the eNB is associated with the SgNB in a dual connectivity; transmit, to the target gNB, a handover request message for the inter-system handover from the EPS to 5GS with the SgNB used as the target gNB; and receive, from the target gNB, an acknowledge of the handover request message. The handover required message includes an SgNB user equipment (UE) X2 application protocol ID (SgNB UE X2AP ID) for identifying a UE over X2 interface in the SgNB. The handover request message includes the SgNB UE X2AP ID, and the SgNB UE X2AP ID is allocated at the SgNB.

    Inter-MeNB handover method and device in a small cell system
    136.
    发明授权
    Inter-MeNB handover method and device in a small cell system 有权

    公开(公告)号：US11596009B2

    公开(公告)日：2023-02-28

    申请号：US17497486

    申请日：2021-10-08

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang

    IPC: H04W76/00 ,  H04W76/11 ,  H04W36/00 ,  H04W36/08 ,  H04W36/18 ,  H04W36/38 ,  H04W76/15

    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.

    Method and eNB equipment for supporting seamless handover
    137.
    发明授权
    Method and eNB equipment for supporting seamless handover 有权

    公开(公告)号：US11589282B2

    公开(公告)日：2023-02-21

    申请号：US17449427

    申请日：2021-09-29

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Lixiang Xu ,  Xiaowan Ke ,  Hong Wang ,  Gert Jan Van Lieshout

    IPC: H04W36/18 ,  H04W76/20 ,  H04W36/02 ,  H04W76/14 ,  H04W76/27 ,  H04W8/22 ,  H04W24/08 ,  H04W52/02 ,  H04W80/02 ,  H04W74/08 ,  H04W80/08

    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.

    Method for UE context and UE connection resume
    138.
    发明授权
    Method for UE context and UE connection resume 有权

    公开(公告)号：US11582824B2

    公开(公告)日：2023-02-14

    申请号：US17228570

    申请日：2021-04-12

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Lixiang Xu ,  Hong Wang ,  Xiaowan Ke

    IPC: H04W76/19 ,  H04W76/10 ,  H04W76/20 ,  H04W76/27 ,  H04W84/04

    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 disclosure provides a method for controlling a user equipment (UE) context and a UE connection, which includes: a first node obtains resume requirement information of a UE; the first node determines whether to resume the UE context, and/or, the UE connection, based on the resume requirement information of the UE. The present disclosure also provides a device for controlling UE context and UE connection.

    NODES IN WIRELESS COMMUNICATION SYSTEM AND METHOD PERFORMED THEREBY
    140.
    发明申请
    NODES IN WIRELESS COMMUNICATION SYSTEM AND METHOD PERFORMED THEREBY 有权

    公开(公告)号：US20220353748A1

    公开(公告)日：2022-11-03

    申请号：US17732909

    申请日：2022-04-29

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yu Pan ,  Weiwei Wang ,  Hong Wang ,  Lixiang Xu

    IPC: H04W36/00

    Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method performed by a first node in a wireless communication system is provided. The method includes transmitting a first message to a second node, the first message indicating a migration request to migrate a third node, which is connected to the first node, to the second node, receiving a second message in response to the first message from the second node, the second message indicating a response to the migration request, and determining whether the third node can migrate to the second node based on the received second message.

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