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：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：US20210176802A1

公开(公告)日：2021-06-10

申请号：US17250568

申请日：2019-08-06

Applicant: Apple Inc.

Inventor： Alexander SIROTKIN ,  Jaemin HAN ,  Feng YANG

IPC: H04W76/12 ,  H04W76/22 ,  H04W76/27 ,  H04W36/00 ,  H04L1/18

Abstract: An apparatus of a next generation NodeB (gNB) comprises one or more baseband processors to interconnect a gNB Central Unit control-plane entity (gNB-CU-CP) with a gNB Central Unit user-plane entity (gNB-CU-UP) via an E1 control plane interface and a gNB Distributed Unit (gNB-DU) via an F1 control plane interface. Rather than relying on multiple class-1 procedures initiated by gNB-CU-CP toward gNB-CU-UP and gNB-DU, the one or more baseband processors are configured to establish or modify a bearer context and to communicate data transport tunneling and/or packet data convergence protocol (PDCP) preservation status information for a specific user equipment (UE), utilizing the direct F1 user plane interface between gNB-DU and gNB-CU-UP to avoid relaying delay. The gNB can include a memory to store the bearer context and data transport tunneling information.