US 12,232,176 B2
Methods for random access channel (RACH) configuration for relay node
Honglei Miao, Munich (DE)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/436,469
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Mar. 9, 2020, PCT No. PCT/US2020/021743
§ 371(c)(1), (2) Date Sep. 3, 2021,
PCT Pub. No. WO2020/181287, PCT Pub. Date Sep. 10, 2020.
Claims priority of provisional application 62/815,007, filed on Mar. 7, 2019.
Prior Publication US 2022/0191934 A1, Jun. 16, 2022
Int. Cl. H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) 19 Claims
OG exemplary drawing
 
1. A method of operating an integrated access and backhaul (IAB) node in a wireless network, comprising:
determining, at the IAB node, a first random access channel (RACH) configuration for a child node served by the IAB node;
transmitting, by the IAB node, a RACH configuration request message including the first RACH configuration to a parent IAB node;
receiving, from the parent IAB node, a second RACH configuration complete message that includes a second RACH configuration that is based on the first RACH configuration for the child node; and
performing a backhaul communication with the parent IAB node using the second RACH configuration.