US 12,010,548 B2
Apparatus and method for congestion handling in radio access network
Murali Narasimha, Lake Osweg, OR (US); Jaemin Han, Portland, OR (US); Candy Yiu, Portland, OR (US); and Alexander Sirotkin, Hod Hasharon (IL)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/274,116
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Sep. 5, 2019, PCT No. PCT/CN2019/104556
§ 371(c)(1), (2) Date Mar. 5, 2021,
PCT Pub. No. WO2020/048510, PCT Pub. Date Mar. 12, 2020.
Claims priority of provisional application 62/728,649, filed on Sep. 7, 2018.
Prior Publication US 2021/0211928 A1, Jul. 8, 2021
Int. Cl. H04W 28/02 (2009.01); H04W 28/086 (2023.01); H04W 88/14 (2009.01)
CPC H04W 28/0284 (2013.01) [H04W 28/0273 (2013.01); H04W 28/0862 (2023.05); H04W 88/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A relay node in a Radio Access Network (RAN) comprising:
a radio frequency (RF) interface configured to receive and transmit downlink data for one or more User Equipments (UEs) or UE bearers; and
processing circuitry coupled with the RF interface,
wherein the processing circuitry is configured to:
determine whether a downlink congestion occurs at the relay node; and
generate a downlink congestion indication to identify a UE, a UE bearer, or a backhaul Radio Link Control (RLC) channel affected by the downlink congestion, wherein the downlink congestion indication comprises at least one of UE bearer specific ID, UE specific ID, or Route ID; and
the RF interface is configured to transmit the downlink congestion indication to a donor node in the RAN to alter prioritization of the UE, the UE bearer, or the backhaul RLC channel to reduce a downlink data rate for the UE, the UE bearer, or the backhaul RLC channel based on the downlink congestion indication, wherein the downlink congestion indication is transmitted in accordance with an adaptation layer protocol, wherein the adaptation layer protocol is below an RLC layer.