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    HANDOVER WITHOUT SECONDARY CELL GROUP (SCG) CHANGE
    31.
    发明申请
    HANDOVER WITHOUT SECONDARY CELL GROUP (SCG) CHANGE 审中-公开

    公开(公告)号：WO2023044825A1

    公开(公告)日：2023-03-30

    申请号：PCT/CN2021/120494

    申请日：2021-09-24

    Applicant: APPLE INC. ,  HU, Haijing

    Inventor： SIROTKIN, Alexander ,  PALLE VENKATA, Naveen Kumar R. ,  NUGGEHALLI, Pavan ,  VANGALA, Sarma V. ,  CHEN, Yuqin ,  WU, Zhibin ,  GURUMOORTHY, Sethuraman ,  XU, Fangli ,  ROSSBACH, Ralf

    IPC: H04W36/00

    Abstract: Methods, systems, apparatuses, and computer programs for enhancing UE handover. In one aspect, the method can include obtaining a request for a handover event from a UE, wherein the request includes at least (i) a request for access to a primary cell group and (ii) data indicating capabilities of the UE, determining, based on the UE capabilities, that the UE is capable of maintaining communication with a secondary cell group of a base station during handover of the UE to the primary cell group of the first base station, generating based on the determined UE capability, a handover command that instructs the UE to maintain communication with the secondary cell group of the base station during handover of the UE to the primary cell group, encoding the generated handover command for transmission to the UE, and transmitting the generated handover command to the UE.

    CONDITIONAL HANDOVERS FOR NON-TERRESTRIAL NETWORKS
    34.
    发明申请
    CONDITIONAL HANDOVERS FOR NON-TERRESTRIAL NETWORKS 审中-公开

    公开(公告)号：WO2023010312A1

    公开(公告)日：2023-02-09

    申请号：PCT/CN2021/110457

    申请日：2021-08-04

    Applicant: APPLE INC. ,  XU, Fangli

    Inventor： VANGALA, Sarma V. ,  SIROTKIN, Alexander ,  XU, Fangli ,  HU, Haijing ,  PALLE VENKATA, Naveen Kumar R. ,  NUGGEHALLI, Pavan ,  CHEN, Yuqin ,  WU, Zhibin ,  GURUMOORTHY, Sethuraman ,  ROSSBACH, Ralf

    IPC: H04W36/30

    Abstract: A UE may perform a location-based conditional handover (CHO) based on a region information and size parameter associated with a serving cell of a non-terrestrial network (NTN). In time-based CHO, the UE may perform CHO in response to expiration of a network-configured wait time. Alternatively, the UE may perform CHO by randomly selecting a wait time from a network configured time range. The selection may be randomized using a network provided seed or using a cell Radio Network Temporary Identifier (RNTI) value. In elevation-based CHO, the UE may perform CHO in response to the elevation angle of a satellite being less than a network configured threshold. When the UE is configured with multiple cells of the NTN, and the CHO criteria for two or more of the cells are satisfied, the UE may select a target cell for CHO based on network indicated prioritization of the cells.

    UPLINK IN-ORDER DELIVERY FOR QOS FLOW OFFLOADED IN 5GC MULTI-RAT DUAL CONNECTIVITY
    36.
    发明申请
    UPLINK IN-ORDER DELIVERY FOR QOS FLOW OFFLOADED IN 5GC MULTI-RAT DUAL CONNECTIVITY 审中-公开

    公开(公告)号：WO2020068952A1

    公开(公告)日：2020-04-02

    申请号：PCT/US2019/052915

    申请日：2019-09-25

    Applicant: APPLE INC.

    Inventor： HAN, Jaemin ,  ZHANG, Yujian ,  SIROTKIN, Alexander ,  PALAT, Sudeep K.

    IPC: H04W28/08 ,  H04W28/02 ,  H04W76/16 ,  H04W76/11

    Abstract: Systems and methods of providing uplink in-order packet delivery of a QoS flow offloaded in a 5G network are described. An uplink forwarding tunnel is established between a source and target node after a determination is made to offload a QoS flow of a UE to the target node. The source node receives a SDAP PDU from the UE that contains an end marker and, in response, sends a GTP-U end marker packet to the target node via the uplink forwarding tunnel. The target node buffer packets associated with the QoS flow received from the UE after establishment of the uplink forwarding tunnel until the GTP-U end marker packet is received from the target node via the uplink forwarding tunnel and, in response, sends the buffered packets to the 5GC.

    SPLIT PROTOCOL DATA UNIT (PDU) SESSION INDICATION FOR MULTI-RAT DUAL CONNECTIVITY (MR-DC) WITH 5GC
    40.
    发明公开
    SPLIT PROTOCOL DATA UNIT (PDU) SESSION INDICATION FOR MULTI-RAT DUAL CONNECTIVITY (MR-DC) WITH 5GC 审中-公开

    公开(公告)号：EP4440234A2

    公开(公告)日：2024-10-02

    申请号：EP24194765.4

    申请日：2020-04-24

    Applicant: Apple Inc.

    Inventor： HAN, Jaemin ,  YANG, Feng ,  SIROTKIN, Alexander ,  PALAT, Sudeep

    IPC: H04W76/15

    CPC classification number: H04W76/15

    Abstract: There is provided a method performed by a master node (MN) comprising: determining a protocol data unit (PDU) session to be served is to be a split PDU session between the MN and a secondary node (SN); generating a request message to be transmitted to the SN to setup PDU session resources on the SN comprising a split session indicator information element (IE) with an enumerated field configured to indicate whether the PDU session is to be the split PDU session. The message is one of a S-Node Addition Request message or a S-Node Modification Request message. The method further comprising transmitting the request message to the SN using an XN application protocol (XnAP).

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