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：US20210345279A1

公开(公告)日：2021-11-04

申请号：US17286217

申请日：2019-10-24

Applicant: Apple Inc.

Inventor： Dawei YING ,  Geng WU ,  Lili WEI ,  Qian LI

IPC: H04W56/00 ,  H04W74/08

Abstract: Embodiments of an integrated access and backhaul (IAB) node, a User Equipment (UE), and methods of communication are generally described herein. An IAB node may operate as a relay between an IAB donor and a UE. The IAB node may receive, from the IAB donor, first signaling that indicates a first timing advance (TA) offset between the IAB donor and the IAB node. The IAB node may determine a second TA offset between the IAB node and the UE. The second TA offset may be based on a timing difference between a transmission time of a downlink frame transmitted to the UE and a reception time of an uplink frame from the UE. The IAB node may transmit, to the UE, second signaling that indicates the first TA offset and the second TA offset.