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    Data forwarding in MR-DC with 5GC operations involving SN change
    31.
    发明授权
    Data forwarding in MR-DC with 5GC operations involving SN change 有权

    公开(公告)号：US12167230B2

    公开(公告)日：2024-12-10

    申请号：US17311749

    申请日：2020-03-18

    Applicant: Apple Inc.

    Inventor： Jaemin Han ,  Feng Yang ,  Alexander Sirotkin ,  Sudeep Palat

    IPC: H04W40/36 ,  H04W36/00 ,  H04W36/08

    Abstract: Apparatuses, systems, and methods for a network node to inter-connect with a first secondary node (SN) within a core network. The network node may be a master node and may serve a UE. The first SN may be a source SN. The network node may initiate a change from the first SN to a second SN, which may be a target SN. The network mode may determine data forwarding from the first SN to the second SN and may request, from the first SN, data forwarding intentions prior to initiating the change from the first SN to a second first SN to the second SN. The network node may send, to the first SN, data forwarding instructions (e.g., based, at least in part, on the data forwarding intentions of the first SN) and the data forwarding instructions may include a requirement for the first SN to follow the data forwarding instructions.

    Separation of Control Plane and User Plane in New Radio (NR) Systems
    34.
    发明公开
    Separation of Control Plane and User Plane in New Radio (NR) Systems 审中-公开

    公开(公告)号：US20230232471A1

    公开(公告)日：2023-07-20

    申请号：US18119463

    申请日：2023-03-09

    Applicant: Apple Inc.

    Inventor： Alexander Sirotkin ,  Yifan Yu ,  Min Huang ,  Jaemin Han ,  Feng Yang

    IPC: H04W76/12

    CPC classification number: H04W76/12 ,  H04W80/02

    Abstract: Embodiments of a Next Generation Node B (gNB) are described herein. The gNB may be configured with logical nodes, including a gNB central unit (gNB-CU) and a gNB distributed unit (gNB-DU). The gNB-CU may include a gNB-CU control plane (gNB-CU-CP) for control-plane functionality, and a gNB-CU user plane (gNB-CU-UP) for user-plane functionality. The gNB may initiate an E1 interface setup procedure, a bearer context setup procedure, and a UE context setup procedure to establish a UE context that includes a signaling radio bearer (SRB) and a data radio bearer (DRB) configuration. The UE context setup request message may be configured to include quality-of-service parameters for the DRB configuration.

    Integrity protection for frequent small data transmission
    35.
    发明授权
    Integrity protection for frequent small data transmission 有权

    公开(公告)号：US11678191B2

    公开(公告)日：2023-06-13

    申请号：US17299532

    申请日：2019-11-27

    Applicant: Apple Inc.

    Inventor： Bharat Shrestha ,  Jaemin Han ,  Abhijeet Ashok Kolekar

    IPC: H04W12/106 ,  H04L9/08 ,  H04L9/32 ,  H04L47/34

    CPC classification number: H04W12/106 ,  H04L9/0894 ,  H04L9/3242 ,  H04L47/34 ,  H04L2209/80

    Abstract: Packet protection is described. Data of a group of packets is concatenated with a security key and a sequence number of the packet. A hash mark of the concatenated data is calculated and sent with data or control information in a packet. If each packet has reserved bits, at least some of the packets each has data, a least a portion of the hash mark, and a header having: a first bit that indicates if the hash mark is present, and a second bit that indicates if the packet is used to determine the hash mark. Otherwise, a separate control packet is sent that contains the hash mark, a first sequence number of the group of packets, and a PDU type indicating that the control packet is an integrity protection packet for the group of PDCP packets.

    E1 interface setup in NG-RAN
    36.
    发明授权
    E1 interface setup in NG-RAN 有权

    公开(公告)号：US11412554B2

    公开(公告)日：2022-08-09

    申请号：US16393753

    申请日：2019-04-24

    Applicant: Apple Inc.

    Inventor： Feng Yang ,  Alexander Sirotkin ,  Jaemin Han ,  Xu Zhang

    IPC: H04W76/10 ,  H04W80/04 ,  H04W92/16

    Abstract: Systems and methods of setting up an E1 interface for a gNB are described. A transmitting entity of the gNB-CU-CP and gNB-CU-UP initiates the first TNL association between the gNB-CU-CP and gNB-CU-UP, and is also limited to initiating the E1 Setup procedure. The transmitting entity sends an E1 SETUP REQUEST message to set up the E1 interface. Afterwards, a message is received from the receiving entity. The transmitting entity determines that the setup of the E1 interface is successful if the message contains IEs of an E1 SETUP RESPONSE message. The types of IEs include a message type IE and a name of the transmitting entity.

    Flexible Flow Control Mechanism for NG-RAN Interfaces
    38.
    发明申请
    Flexible Flow Control Mechanism for NG-RAN Interfaces 审中-公开

    公开(公告)号：US20200314963A1

    公开(公告)日：2020-10-01

    申请号：US16859673

    申请日：2020-04-27

    Applicant: Apple Inc.

    Inventor： Jaemin Han ,  Alexander Sirotkin

    IPC: H04W88/10 ,  H04W92/12 ,  H04W88/08 ,  H04W76/27 ,  H04W72/04 ,  H04W28/10

    Abstract: An apparatus of a RAN node in which flexible feedback for user data transferred between RAN nodes is described. The DL PDCP PDUs to be delivered to a UE is transmitted over an Xn or X2 interface between RAN and NG-RAN nodes, respectively. Feedback received allows transmitting RAN node to control downlink user data flow. The feedback contains a DDDS frame that includes a highest transmitted and delivered PDCP SN indicator parameter that respectively indicates whether a highest transmitted and successfully delivered PDCP PDU is present in the DDDS message and a highest transmitted and successfully delivered PDCP SN PDU parameter that provides feedback respectively about a transmitted status of the PDU sequence and an in-sequence delivery status of the PDUs to the UE. Buffered PDUs reported by the DDDS message are removed from memory as transmitted or successfully delivered PDUs.

    PDCP and ROHC handling for multi-connectivity handover
    39.
    发明授权
    PDCP and ROHC handling for multi-connectivity handover 有权

    公开(公告)号：US12262262B2

    公开(公告)日：2025-03-25

    申请号：US17968044

    申请日：2022-10-18

    Applicant: Apple Inc.

    Inventor： Candy Yiu ,  Yujian Zhang ,  Yi Guo ,  Jaemin Han

    IPC: H04W36/00 ,  H04W12/037 ,  H04W12/0431 ,  H04W28/06 ,  H04W36/18 ,  H04W36/28 ,  H04W76/15 ,  H04W76/30 ,  H04W74/0833

    Abstract: Techniques to configure a user equipment (UE) for a multi-connectivity handover with a source base station (SBS) and a target base station (TBS) include encoding a measurement report for transmission to the SBS. The measurement report is triggered based on a measurement event configured by the SBS. Radio resource control (RRC) signaling from the SBS is decoded, the RRC signaling including a handover command in response to the measurement report. The handover command includes an indication for multi-connectivity support by the SBS and the TBS during the handover. A first protocol stack associated with the SBS and a second protocol stack associated with the TBS are configured at the UE. A packet data convergence protocol (PDCP) protocol data unit (PDU) received at the UE during the handover is processed using the first protocol stack or the second protocol stack.

    Signaling for MAC-I verification in RNAU without anchor relocation
    40.
    发明授权
    Signaling for MAC-I verification in RNAU without anchor relocation 有权

    公开(公告)号：US12156276B2

    公开(公告)日：2024-11-26

    申请号：US17309161

    申请日：2019-10-30

    Applicant: Apple Inc.

    Inventor： Jaemin Han ,  Yi Guo ,  Alexander Sirotkin

    IPC: H04W76/27 ,  H04W12/106 ,  H04W36/00 ,  H04W48/20 ,  H04W76/19

    Abstract: An apparatus of a next generation NodeB (gNB) comprises one or more baseband processors to process a radio resource control (RRC) resume request (RRCResumeRequest) from a user equipment (UE) in an inactive state (RRC_INACTIVE), and to send a UE context request (Retrieve UE Context Request) to a last serving gNB, wherein the UE context request includes a physical cell identifier (PCI) and cell radio network temporary identifier (C-RNTI) of the gNB. The apparatus can include a memory to store the RRC resume request at the gNB and the UE context request at the last serving gNB.

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