US 12,256,458 B2
Method and apparatus for small data transmission in RRC inactive state in MR-DC
Seokjung Kim, Seoul (KR); Jian Xu, Seoul (KR); and Daewook Byun, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/797,596
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jan. 14, 2021, PCT No. PCT/KR2021/000541
§ 371(c)(1), (2) Date Aug. 4, 2022,
PCT Pub. No. WO2021/157895, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10-2020-0015127 (KR), filed on Feb. 7, 2020.
Prior Publication US 2023/0067158 A1, Mar. 2, 2023
Int. Cl. H04W 76/27 (2018.01); H04W 28/06 (2009.01); H04W 76/16 (2018.01)
CPC H04W 76/27 (2018.02) [H04W 28/06 (2013.01); H04W 76/16 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method performed by a Master Node (MN) in a Dual Connectivity (DC) for a wireless device in a wireless communication system, the method comprising,
suspending a Radio Resource Control (RRC) connection with the wireless device;
receiving, from a Secondary Node (SN) in the DC, a first message related to a downlink (DL) data;
transmitting, to the wireless device, a paging message including an indication related to an Early Data Transmission (EDT) procedure for the SN;
receiving, from the wireless device, an Access Stratum-Release Assistance Information (AS-RAI) related to the EDT procedure for SN;
deciding whether to continue the EDT procedure to the wireless device for the DL data or to transit the wireless device to the RRC-CONNECTED state based on the received AS-RAI; and
transmitting the DL data to the wireless device based on the decision.