US 12,335,791 B2
Radio access network node, radio terminal, and method therefor
Hisashi Futaki, Tokyo (JP); and Sadafuku Hayashi, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on May 9, 2024, as Appl. No. 18/659,073.
Application 18/659,073 is a continuation of application No. 18/360,106, filed on Jul. 27, 2023, granted, now 12,022,329.
Application 18/360,106 is a continuation of application No. 17/419,643, granted, now 11,792,696, issued on Oct. 17, 2023, previously published as PCT/JP2019/042921, filed on Oct. 31, 2019.
Claims priority of application No. 2019-003563 (JP), filed on Jan. 11, 2019.
Prior Publication US 2024/0292282 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/00 (2009.01); H04W 36/36 (2009.01); H04W 76/15 (2018.01)
CPC H04W 36/0027 (2013.01) [H04W 36/00698 (2023.05); H04W 36/36 (2013.01); H04W 36/362 (2023.05); H04W 76/15 (2018.02)] 9 Claims
OG exemplary drawing
 
1. A method for a radio access network node, the method comprising:
acting as a secondary node of dual connectivity for a radio terminal;
transmitting, to a master node of the dual connectivity, a first Radio Resource Control (RRC) message comprising an information element identifying an execution condition of a conditional primary cell change of a primary cell of a secondary cell group from a first cell to a second cell; and
receiving, from the master node, a second RRC message that is transmitted from the radio terminal in response to a satisfaction of the execution condition.