Separation of control plane and user plane in new radio (NR) systems

    公开(公告)号:US12096498B2

    公开(公告)日:2024-09-17

    申请号:US18119463

    申请日:2023-03-09

    Applicant: Apple Inc.

    CPC classification number: H04W76/12 H04W80/02 H04W92/20

    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.

    Apparatus and method for congestion handling in radio access network

    公开(公告)号:US12010548B2

    公开(公告)日:2024-06-11

    申请号:US17274116

    申请日:2019-09-05

    Applicant: Apple Inc.

    CPC classification number: H04W28/0284 H04W28/0273 H04W28/0862 H04W88/14

    Abstract: Provided herein is an apparatus and a method for congestion handling in RAN. The disclosure provides an apparatus for a relay node in a RAN including the relay node and a donor node providing an interface to a core network and a backhaul link to the relay node. The apparatus includes a RF interface to receive and transmit downlink data for one or more UEs or UE bearers; and a processing circuitry coupled with the RF interface. The processing circuitry is to determine a downlink congestion occurs at the relay node; and generate a downlink congestion indication to identify a UE or a UE bearer or a backhaul RLC channel affected by the downlink congestion. The RF interface is to transmit the downlink congestion indication to the donor node. In addition to the downlink congestion handling, the relay node can also be to handle uplink congestion in a similar way.

    Devices and Methods for Flow-Control Triggering and Feedback

    公开(公告)号:US20240080799A1

    公开(公告)日:2024-03-07

    申请号:US18379382

    申请日:2023-10-12

    Applicant: Apple Inc.

    CPC classification number: H04W68/005 H04L1/1642 H04W28/06 H04W80/08 H04W84/18

    Abstract: Devices, methods, communication nodes, base stations, storage media, and other embodiments are provided for managing associations in a communication network. In one example embodiment, a New Radio (NR) node is configured for NR user-plane protocol communications between a master node (MN) and a secondary node (SN). The NRnode is configured to generate a downlink (DL) user data message with downlink user data, initiate transmission of the DL user data message to a second node, and process a DL data delivery status message from the second node in response to the DL user data message. In various embodiments, polling and SCG split-bearer configurations are supported by such messaging. In some embodiments, packet data convergence protocol (PDCP) serial numbers are communicated for transmission and retransmission management. In some embodiments, DL configurations initiated by an SN are enabled, as well as UL configurations initiated by either an MN or an SN.

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