US 12,464,415 B2
System and method for iab handovers
Wei Luo, Shenzhen (CN); and Lin Chen, Shenzhen (CN)
Assigned to ZTE Corporation, Shenzhen (CN)
Filed by ZTE CORPORATION, Guangdong (CN)
Filed on Sep. 23, 2021, as Appl. No. 17/482,933.
Application 17/482,933 is a continuation of application No. PCT/CN2019/080247, filed on Mar. 28, 2019.
Prior Publication US 2022/0014976 A1, Jan. 13, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 36/12 (2009.01)
CPC H04W 36/0044 (2013.01) [H04W 36/0064 (2023.05); H04W 36/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method, comprising:
sending, by a central unit (CU) to a target distributed unit (DU), a user equipment (UE) context setup request configured to cause the target DU to create a UE context and to set up at least one bearer for a handover preparation procedure, wherein the UE context setup request comprises a radio link control (RLC) to-be-setup list, including a backhaul RLC channel level quality-of-service (QOS) profile, a UE bearer level QoS profile, a QoS flow-level QoS profile for user plane backhaul RLC channel, or a signaling radio bearer (SRB) QoS profile;
receiving, by the CU from the target DU, a UE context setup response in the handover preparation procedure, responsive to the UE context setup request, wherein the UE context setup response includes results for the at least one bearer set up by the target DU, wherein the results for the at least one bearer set up by the target DU include a RLC setup failure list, wherein the RLC setup failure list includes a list of backhaul RLC channels; and
determining, by the CU, whether to modify configurations corresponding to the target DU to support the RLC channel to-be-setup list according to the UE context setup response.