Method and apparatus for performing inter-MeNB handover without SeNB change in wireless communication system

    公开(公告)号:US11044655B2

    公开(公告)日:2021-06-22

    申请号:US16788010

    申请日:2020-02-11

    Abstract: A method and apparatus for performing an inter-master eNodeB (MeNB) handover procedure without secondary eNB (SeNB) change in a wireless communication system is provided. A source MeNB transmits a handover request message including a first indication of a SeNB to a target MeNB. The first indication may correspond to a SeNB identifier (ID). Upon receiving the handover request message including the first indication, the target MeNB transmits a SeNB addition request message including a second indication of a UE, served by the SeNB, to the SeNB. The second indication may correspond to an old SeNB UE X2AP ID, which was allocated by the SeNB. Upon receiving the SeNB addition request message including the second indication, the SeNB may transmit a SeNB addition acknowledge message including a third indication of keeping bearers of the SeNB from the SeNB.

    Method and apparatus for performing V2X communication on basis of cell group information

    公开(公告)号:US10771929B2

    公开(公告)日:2020-09-08

    申请号:US16085952

    申请日:2017-03-20

    Abstract: Provided are a method for performing, by a multi-cell coordination entity (MCE), a vehicle-to-everything (V2X) communication in a wireless communication system, and an apparatus for supporting the same. The method comprises the steps of: receiving, from an MME, information on a cell group and an indication which instructs the MCE to perform either of a multicast broadcast single frequency network (MBSFN) operation or a single-cell point-to-multipoint (SCPTM) operation; determining to perform either of the MBSFN operation or the SCPTM operation on the basis of the indication; and transmitting, to a base station, the information on the cell group received from the MME, on the basis of the information on the cell group and the determined operation, wherein the information on the cell group may be information related to a cell group to which a V2X message is to be delivered, and the base station may be a base station that manages cells which belong to the cell group to which the V2X message is to be delivered.

    Method for resuming connection in wireless communication system and device for same

    公开(公告)号:US10716161B2

    公开(公告)日:2020-07-14

    申请号:US16071474

    申请日:2017-01-19

    Abstract: Disclosed are a method for resuming a connection in a wireless communication system and a device for same. More particularly, a method for executing a procedure of resuming a connection by a network node in a wireless communication system can comprise the steps of: receiving a message, which comprises a tracking area update request (TAU request) of a user equipment (UE), from an eNodeB (eNB), wherein the message comprises a result that determines the validity with regard to whether or not resumption of a connection of the UE is possible by means of the eNB; determining whether or not an E-UTRAN radio access bearer (E-RAB) setup for the UE is required; and determining a message to be transmitted to the eNB on the basis of whether or not the E-RAB setup for the UE is required and/or whether or not resumption of a connection of the UE is possible.

    Method and apparatus for performing inter-MeNB handover without SeNB change in wireless communication system

    公开(公告)号:US10588065B2

    公开(公告)日:2020-03-10

    申请号:US16255732

    申请日:2019-01-23

    Abstract: A method and apparatus for performing an inter-master eNodeB (MeNB) handover procedure without secondary eNB (SeNB) change in a wireless communication system is provided. A source MeNB transmits a handover request message including a first indication of a SeNB to a target MeNB. The first indication may correspond to a SeNB identifier (ID). Upon receiving the handover request message including the first indication, the target MeNB transmits a SeNB addition request message including a second indication of a UE, served by the SeNB, to the SeNB. The second indication may correspond to an old SeNB UE X2AP ID, which was allocated by the SeNB. Upon receiving the SeNB addition request message including the second indication, the SeNB may transmit a SeNB addition acknowledge message including a third indication of keeping bearers of the SeNB from the SeNB.

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