US 12,477,592 B2
Method for dual connectivity handover, terminal, and network device
Yue Ma, Chang'an Dongguan (CN); and Yumin Wu, Chang'an Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Chang'an Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO.,LTD., Guangdong (CN)
Filed on Mar. 25, 2021, as Appl. No. 17/212,720.
Application 17/212,720 is a continuation of application No. PCT/CN2019/106672, filed on Sep. 19, 2019.
Claims priority of application No. 201811134407.8 (CN), filed on Sep. 27, 2018.
Prior Publication US 2021/0211951 A1, Jul. 8, 2021
Int. Cl. H04W 36/00 (2009.01); H04W 36/08 (2009.01); H04W 76/10 (2018.01)
CPC H04W 76/10 (2018.02) [H04W 36/083 (2023.05); H04W 36/0069 (2018.08)] 20 Claims
OG exemplary drawing
 
1. A method for dual connectivity handover from a source node to a target node, applied to a terminal side and comprising:
receiving, by the terminal side not in dual connectivity, a handover command sent from the source node, wherein the handover command carries both dual connectivity DC configuration information for establishing a dual connectivity with the source node and the target node and single connectivity SC configuration information for establishing a single connectivity with the target node;
determining, by the terminal side not in dual connectivity, whether the DC configuration information is supported by the terminal side;
in case that the DC configuration information is supported by the terminal side, establishing, by the terminal side not in dual connectivity, dual connectivity with the source node and the target node based on the DC configuration information; and
based on the SC configuration information, disconnecting, by the terminal side in the established dual connectivity with the source node and the target node, the connection with the source node in the dual connectivity and maintaining a single connection with the target node;
wherein after the step of receiving, by the terminal side not in dual connectivity, a handover command sent from a source node, the method further comprises:
sending, by the terminal side, first confirmation information to the source node based on the handover command, wherein the first confirmation information is used to confirm at least one of the following:
whether the SC configuration information is valid,
whether the SC configuration information is applied.