公开(公告)号：US20230155658A1

公开(公告)日：2023-05-18

申请号：US17442456

申请日：2020-08-05

Applicant: Apple Inc.

Inventor： Yushu ZHANG ,  Haitong SUN ,  Yakun SUN ,  Weidong YANG ,  Wei ZENG ,  Dawei ZHANG ,  Rohit U. NABAR

IPC: H04B7/06 ,  H04W8/24

CPC classification number: H04B7/0695 ,  H04W8/24

Abstract: Methods and apparatuses are disclosed for performing fast beam tracking in a wireless communication environment. A UE signals to a gNB its capabilities for intra-symbol beam sweeping. Depending on configuration, the UE can either assume that the intra-symbol beam sweeping configuration will be implemented, or will await a response from the gNB before implementing intra-symbol beam sweeping. Although this is generally carried out during initial access between the UE and the gNB, the beam sweeping configuration can be dynamically updated by either the UE or the gNB during established communication. For example, the UE can signal a desired change via its MAC CE, and the gNB can signal its change to the UE via DCI.