US 12,414,024 B2
Reducing service disruption in handover scenarios
Zhongming Chen, Guangdong (CN); He Huang, Guangdong (CN); Xiaojuan Shi, Guangdong (CN); and Jing Liu, Guangdong (CN)
Assigned to ZTE Corporation, Shenzhen (CN)
Filed by ZTE Corporation, Guangdong (CN)
Filed on Apr. 29, 2022, as Appl. No. 17/732,855.
Application 17/732,855 is a continuation of application No. PCT/CN2019/114224, filed on Oct. 30, 2019.
Prior Publication US 2022/0256427 A1, Aug. 11, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 36/38 (2009.01)
CPC H04W 36/38 (2013.01) 12 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
transmitting, from a communication node to a source base station, a first message that comprises an information associated with a Protocol Data Unit (PDU) session, the first message further indicating a resource assignment for the PDU session;
performing, by the communication node, a handover procedure from a source base station to a target base station based on the information associated with the PDU session, wherein the information includes a mapping rule that indicates that at least one tunnel in a list of tunnels that carry user data has a one-to-one correspondence with a Quality of Service (QOS) flow, that the PDU session has a one-to-one correspondence with the QoS flow, and that the QoS flow has a one-to-one correspondence with a Data Radio Bearer (DRB); and
transmitting, by the communication node for the handover procedure, downlink data to both the source base station and the target base station,
the method further comprising:
receiving, by the communication node, a request from the source base station, the request comprising an indicator indicating a support for a core-network (CN) split function that allows interworking between multiple radio access technologies at a core network level.