公开(公告)号：US20220061110A1

公开(公告)日：2022-02-24

申请号：US17517182

申请日：2021-11-02

Applicant: Apple Inc.

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

IPC: H04W76/12

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 comprise 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.

公开(公告)号：US12041587B2

公开(公告)日：2024-07-16

申请号：US17286631

申请日：2019-10-29

Applicant: Apple Inc.

Inventor： Alexander Sirotkin ,  Qian Li ,  Lili Wei ,  Dawei Ying ,  Geng Wu ,  Jaemin Han ,  Murali Narasimha ,  Youn Hyoung Heo ,  Sudeep K Palat

IPC: H04W72/0446 ,  H04W28/02 ,  H04W40/22 ,  H04W88/08

CPC classification number: H04W72/0446 ,  H04W28/0263 ,  H04W40/22 ,  H04W88/08

Abstract: Embodiments of an integrated access and backhaul (IAB) donor, IAB node, and methods of communication are generally described herein. An IAB network may comprise a plurality of IAB nodes to operate as relays between the IAB donor and one or more User Equipment (UE). The IAB donor may, for each of the IAB nodes, allocate a plurality of subframes to the IAB node. Each allocated subframe may have a subframe type that is one of: a downlink subframe, an uplink subframe, a flexible subframe or a not available subframe. The IAB donor may transmit, from a central unit (CU) of the IAB donor to a distributed unit (DU) an IAB node over an F1 interface, a resource coordination request message that indicates the subframe types of the plurality of subframes.

公开(公告)号：US11991087B2

公开(公告)日：2024-05-21

申请号：US17309159

申请日：2019-10-29

Applicant: Apple Inc.

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

IPC: H04L47/34 ,  H04L1/1607

CPC classification number: H04L47/34 ,  H04L1/1642

Abstract: An apparatus of a next generation Node B (gNB) Distributed Unit (DU) comprises one or more baseband processors to transmit one or more retransmitted Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) received from a gNB Central Unit (CU) to a user equipment (UE), and to feed back not only a latest, in-sequence New Radio User-plane (NR-U) Sequence Number (SN) to the CU for Release 15, but also a highest, in-sequence successfully delivered/transmitted PDCP SN, optionally, with a NR-U SN up to which the reported PDCP SN should be applied, which can provide an exact range of successfully delivered/transmitted status for retransmitted packets even in case of DU's re-ordering based on PDCP SN before transmitting to the UE. The apparatus can include a memory to store the reported PDCP SN and NR-U SN.

公开(公告)号：US11457503B2

公开(公告)日：2022-09-27

申请号：US16487173

申请日：2018-03-16

Applicant: Apple Inc.

Inventor： Jaemin Han ,  Yujian Zhang ,  Alexander Sirotkin ,  Xu Zhang ,  Yifan Yu ,  Min Huang ,  Feng Yang ,  Sudeep Palat

IPC: H04W80/02 ,  H04W76/10 ,  H04L1/18 ,  H04L69/16 ,  H04W28/06

Abstract: A centralized RAN architecture that includes lower layer transmission nodes (referred to as distributed units (DUs) herein) that connect to an upper layer RAN node (referred to as a centralized unit (CU) herein). A centralized RAN architecture may include a functional split, between the CU and DU, corresponding to the Packet Data Convergence Protocol (PDCP) and Radio Link Control (RLC) layers. In one embodiment, a CU may store copies of downlink PDCP PDUs that are transmitted to a first DU. The CU may retransmit, to a second DU, those of the PDCP PDUs which were previously transmitted to the source DU but have not been acknowledged as successfully delivered by the source DU.

公开(公告)号：US20220201744A1

公开(公告)日：2022-06-23

申请号：US17441907

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Bharat Shrestha ,  Meghashree Dattatri Kedalagudde ,  Puneet Jain ,  Jaemin Han

IPC: H04W74/08 ,  H04W68/00 ,  H04W76/20 ,  H04W12/03

Abstract: This disclosure describes methods, systems, and devices for mobile terminated (MT) early data transmission (EDT). In one example, a method involves receiving, by a node of the RAN, an MT EDT indication and information indicative of downlink data for transmission to a user equipment (UE) served by the RAN. The method further involves based on the information indicative of the downlink data, determining to initiate MT EDT to transmit the downlink data to the UE. The method also involves generating a Radio Resource Control (RRC) paging message comprising: (i) the MT EDT indication, (ii) an indication of a contention free (CF) physical random access channel (PRACH) resource, and (iii) an indication of an EDT-radio network temporary identifier (EDT-RNTI). Further, the method involves transmitting the RRC paging message to the UE.

公开(公告)号：US20220159529A1

公开(公告)日：2022-05-19

申请号：US17440525

申请日：2019-05-02

Applicant: Apple Inc.

Inventor： Jaemin Han ,  Alexander Sirotkin ,  Bharat Shrestha ,  Yi Guo

IPC: H04W36/00 ,  H04W36/08

Abstract: One or more methods for enhancing inter-node handover (HO) signaling for conditional HO (CHO). At least one of the methods include: providing a message that comprises indications of a plurality of potential target cell identifiers that are applicable to a CHO operation; and performing a CHO operation based on the message.

公开(公告)号：US20220030488A1

公开(公告)日：2022-01-27

申请号：US17311749

申请日：2020-03-18

Applicant: Apple Inc.

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

IPC: H04W36/08 ,  H04W40/36

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.

公开(公告)号：US10966284B2

公开(公告)日：2021-03-30

申请号：US16859673

申请日：2020-04-27

Applicant: Apple Inc.

Inventor： Jaemin Han ,  Alexander Sirotkin

IPC: H04L12/26 ,  H04W88/10 ,  H04W92/12 ,  H04W88/08 ,  H04W76/27 ,  H04W72/04 ,  H04W28/10 ,  H04W28/12 ,  H04W80/02 ,  H04W80/08 ,  H04L12/801 ,  H04W4/70 ,  H04W28/02 ,  H04L5/00

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.

公开(公告)号：US12133120B2

公开(公告)日：2024-10-29

申请号：US17294313

申请日：2019-11-12

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Jaemin Han ,  Sudeep Palat ,  Yi Guo

IPC: H04W36/00

CPC classification number: H04W36/0058 ,  H04W36/0072 ,  H04W36/0077 ,  H04W36/0085

Abstract: Methods, systems, and storage media are described for command handling for simultaneous connectivity handovers. Other embodiments may be described and/or claimed.

公开(公告)号：US12108292B2

公开(公告)日：2024-10-01

申请号：US17276091

申请日：2019-09-23

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Yi Guo ,  Jaemin Han ,  Oluwaseyi Omotere

IPC: H04W36/00 ,  H04W74/0833 ,  H04W76/30

CPC classification number: H04W36/00837 ,  H04W36/0058 ,  H04W36/0069 ,  H04W36/0085 ,  H04W74/0841 ,  H04W76/30

Abstract: Techniques to configure a UE for time-division multiplexing (TDM)-based multi-connectivity handover with a source base station (SBS) and a target base station (TBS) include encoding UE capability information for transmission to the SBS. The UE capability information indicates the UE supports the TDM-based multi-connectivity handover. A measurement report is encoded for transmission to the SBS, the measurement report triggered based on a measurement event configured by the SBS. RRC signaling from the SBS is decoded, which includes a handover command in response to the measurement report. The handover command indicates a TDM pattern for multi-connectivity with the SBS and the TBS during the handover. UL data is encoded for transmission to the SBS. Transmission of the UL data to the SBS is time-division multiplexed with communications between the UE and the TBS during the handover based on the TDM pattern.