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.

公开(公告)号：US20200252997A1

公开(公告)日：2020-08-06

申请号：US16637478

申请日：2018-07-17

Applicant: Apple Inc.

Inventor： Alexander SIROTKIN ,  Candy YIU ,  Yang TANG ,  Youn Hyoung HEO ,  Jaemin HAN ,  Jie CUI

IPC: H04W88/10 ,  H04W24/10 ,  H04W36/00 ,  H04L1/00 ,  H04L5/00

Abstract: Embodiments of a generation Node-B (gNB), User Equipment (UE) and methods to configure measurement gaps are generally described herein. A serving cell gNB may transmit, to a neighbor cell gNB, a channel state information reference signal (CSI-RS) status request message and may receive, from the neighbor cell gNB 105, a CSI-RS status update message. The serving cell gNB may determine, based on timing information in the CSI-RS status update message, a measurement gap to be reserved for transmission of CSI-RS from the neighbor cell gNB to a UE that is served by the serving cell gNB. The serving cell gNB may transmit, to the UE, control signaling that indicates the measurement gap. The serving cell gNB may receive, from the UE, a measurement report that indicates a signal quality measurement based on the CSI-RS from the neighbor cell gNB.