US 12,452,942 B2
Dual-connectivity establishment method and device
Hong Wang, Beijing (CN); Lixiang Xu, Beijing (CN); and Xiaowan Ke, Beijing (CN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 31, 2024, as Appl. No. 18/680,291.
Application 18/680,291 is a continuation of application No. 17/122,435, filed on Dec. 15, 2020, granted, now 12,028,916.
Application 17/122,435 is a continuation of application No. 16/743,557, filed on Jan. 15, 2020, granted, now 10,880,940, issued on Dec. 29, 2020.
Application 16/743,557 is a continuation of application No. PCT/KR2018/009177, filed on Aug. 10, 2018.
Claims priority of application No. 201710683643.4 (CN), filed on Aug. 11, 2017.
Prior Publication US 2024/0324042 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 76/15 (2018.01); H04W 28/02 (2009.01); H04W 76/11 (2018.01); H04W 76/12 (2018.01); H04W 76/27 (2018.01); H04W 80/08 (2009.01); H04W 84/20 (2009.01)
CPC H04W 76/15 (2018.02) [H04W 28/0257 (2013.01); H04W 76/11 (2018.02); H04W 76/12 (2018.02); H04W 76/27 (2018.02); H04W 80/08 (2013.01); H04W 84/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a central unit (CU) entity of a secondary base station in a wireless communication system, the method comprising:
receiving, from a master base station, secondary base station setup request information;
transmitting, from a control plane (CP) of the CU entity to a user plane (UP) of the CU entity, a first setup request message based on the secondary base station setup request information;
receiving, from the UP to the CP, a first setup response message as a response to the first setup request message; and
transmitting, to a distributed unit (DU) entity of the secondary base station, a second setup request message for bearer setup in response to the first setup response message;
wherein the first setup request message includes duplication activation information on state of downlink (DL) packet data convergence protocol (PDCP) duplication.