US 12,225,612 B2
Dual connection re-establishment method, readable storage medium, and base station
Juntao Wang, Shenzhen (CN); Gaopeng Du, Shenzhen (CN); Xueying Huang, Shenzhen (CN); Wei Si, Shenzhen (CN); and Rui Liu, Shenzhen (CN)
Assigned to ZTE CORPORATION, Shenzhen (CN)
Appl. No. 17/776,128
Filed by ZTE Corporation, Shenzhen (CN)
PCT Filed Oct. 29, 2020, PCT No. PCT/CN2020/124988
§ 371(c)(1), (2) Date May 11, 2022,
PCT Pub. No. WO2021/093599, PCT Pub. Date May 20, 2021.
Claims priority of application No. 201911107547.0 (CN), filed on Nov. 13, 2019.
Prior Publication US 2022/0304095 A1, Sep. 22, 2022
Int. Cl. H04W 76/19 (2018.01); H04W 76/15 (2018.01); H04W 76/20 (2018.01)
CPC H04W 76/19 (2018.02) [H04W 76/15 (2018.02); H04W 76/20 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A dual connection re-establishment method, which is applied to a master node (MN) side, the method comprising:
sending a configuration information request to a target secondary node (SN) in response to a radio resource control (RRC) connection re-establishment completion instruction sent by a user equipment (UE);
receiving first configuration information fed back by the target SN; and
sending the first configuration information, and second configuration information corresponding to the MN to the UE for the UE to complete the RRC connection reconfiguration with the MN and the target SN according to the first configuration information and the second configuration information;
prior to sending a configuration information request to a target SN, the method further comprising:
determining a source SN to which the UE was connected previously as the target SN in response to the UE not needing to switch the SN;
wherein in response to the source SN being determined as the target SN, sending a configuration information request to a target SN comprises:
sending the configuration information request and a first instance maintenance request to the target SN for the target SN to feed back the first configuration information and maintain a UE instance.