公开(公告)号：US20210392085A1

公开(公告)日：2021-12-16

申请号：US17309159

申请日：2019-10-29

Applicant: Apple Inc.

Inventor： Jaemin HAN ,  Feng YANG ,  Yujian ZHANG ,  Alexander SIROTKIN

IPC: H04L12/801 ,  H04L1/16

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：US20220159763A1

公开(公告)日：2022-05-19

申请号：US17593745

申请日：2020-04-24

Applicant: Apple Inc.

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

IPC: H04W76/15 ,  H04W12/033

Abstract: A master node (MN) that determines a manner of a protocol data unit (PDU) session to be served, wherein the manner of the PDU session includes a split PDU session between the MN and a secondary node (SN) or a whole PDU session served by the MN, generates a request message to be transmitted to the SN to setup PDU session resources on the SN based on the manner of the PDU session is to be served and indicates, to the SN, the manner of the PDU session to be served. A SN that receives, from a MN, a request message to setup PDU session resources, determines a manner of the PDU session to be served, and sets up the PDU session resources on the SN, based on at least the manner of the PDU session to be served.

公开(公告)号：US20210352666A1

公开(公告)日：2021-11-11

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: H04W72/04

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：US20240098823A1

公开(公告)日：2024-03-21

申请号：US18509784

申请日：2023-11-15

Applicant: Apple Inc.

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

IPC: H04W76/15 ,  H04W12/033

CPC classification number: H04W76/15 ,  H04W12/033 ,  H04W88/06

Abstract: A master node (MN) that determines a manner of a protocol data unit (PDU) session to be served, wherein the manner of the PDU session includes a split PDU session between the MN and a secondary node (SN) or a whole PDU session served by the MN, generates a request message to be transmitted to the SN to setup PDU session resources on the SN based on the manner of the PDU session is to be served and indicates, to the SN, the manner of the PDU session to be served. A SN that receives, from a MN, a request message to setup PDU session resources, determines a manner of the PDU session to be served, and sets up the PDU session resources on the SN, based on at least the manner of the PDU session to be served.

公开(公告)号：US20230037694A1

公开(公告)日：2023-02-09

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 ,  H04W76/30 ,  H04W12/037 ,  H04W12/0431 ,  H04W28/06

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.

公开(公告)号：US20220061121A1

公开(公告)日：2022-02-24

申请号：US17438869

申请日：2020-03-18

Applicant: Apple Inc.

Inventor： Jaemin HAN ,  Yi GUO ,  Alexander SIROTKIN ,  Sudeep PALAT

IPC: H04W76/27

Abstract: Techniques, systems, and devices to support small data transfers are described. A first node, such as a gNodeB or an eNodeB, can perform operations that include receiving a resume request from a user equipment (UE) that is in an inactive state, the resume request including a small data indication, where context information for the UE resides at a second node; transmitting a retrieve UE context request to the second node, the retrieve UE context request including the small data indication; receiving a UE context response from the second node; transmitting, by the first node, a resume response to the UE to cause the UE to switch to a connected state; processing uplink data from the UE; and transmitting a release message to the UE to cause the UE to switch to the inactive state. The release message can be based on RRC release information received from the second node.

公开(公告)号：US20220014979A1

公开(公告)日：2022-01-13

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

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：US20220038941A1

公开(公告)日：2022-02-03

申请号：US17276468

申请日：2019-09-25

Applicant: Apple Inc.

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

IPC: H04W28/02 ,  H04W76/12 ,  H04W76/15

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.

公开(公告)号：US20220007454A1

公开(公告)日：2022-01-06

申请号：US17309161

申请日：2019-10-30

Applicant: Apple Inc.

Inventor： Jaemin HAN ,  Yi GAO ,  Alexander SIROTKIN

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

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.

公开(公告)号：US20210211928A1

公开(公告)日：2021-07-08

申请号：US17274116

申请日：2019-09-05

Applicant: Apple Inc.

Inventor： Murali NARASIMHA ,  Jaemin HAN ,  Candy YIU ,  Alexander SIROTKIN

IPC: H04W28/02 ,  H04W28/08 ,  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.