US 11,895,217 B2
Method for transmitting data, and device therefor
Junsuk Kim, Suwon-si (KR); Soomin Lee, Suwon-si (KR); Sangho Lee, Suwon-si (KR); Hyerim Lee, Suwon-si (KR); Hyejeong Kim, Suwon-si (KR); and Suyoung Park, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/601,021
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Mar. 25, 2020, PCT No. PCT/KR2020/004068
§ 371(c)(1), (2) Date Oct. 1, 2021,
PCT Pub. No. WO2020/204452, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 10-2019-0038821 (KR), filed on Apr. 3, 2019.
Prior Publication US 2022/0174135 A1, Jun. 2, 2022
Int. Cl. H04L 69/321 (2022.01); H04L 1/1867 (2023.01); H04L 69/16 (2022.01); H04W 36/02 (2009.01); H04W 80/02 (2009.01)
CPC H04L 69/321 (2013.01) [H04L 1/1874 (2013.01); H04L 69/16 (2013.01); H04W 36/023 (2013.01); H04W 80/02 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electronic device comprising:
at least one wireless communication circuit configured to provide a first radio access technology (RAT) and a second RAT;
a processor operatively connected to the at least one wireless communication circuit; and
a memory operatively connected to the processor, wherein the memory stores instructions, and the processor is configured to:
detect a packet data convergence protocol (PDCP) change from a first PDCP to a second PDCP at least by detecting a change in a PDCP version and/or in a PDCP key,
identify, in response to detected PDCP change, at least one first data packet that is delivered from a PDCP layer to a lower layer and has not been transmitted by the electronic device, and
when a transmission protocol of the at least one first data packet is a user datagram protocol, UDP, determine to reprocess the at least one first data packet by:
storing the at least one first data packet in a buffer,
changing at least a portion of the first data packet to at least one second data packet related to the second PDCP, and
transmitting the at least one second data packet.