US 11,856,452 B2
Method and device for identifying security key based on PDCP layer device in next-generation mobile communication system
Donggun Kim, Suwon-si (KR); and Soenghun Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/294,045
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Dec. 19, 2019, PCT No. PCT/KR2019/018103
§ 371(c)(1), (2) Date May 14, 2021,
PCT Pub. No. WO2020/130673, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10-2018-0165242 (KR), filed on Dec. 19, 2018; application No. 10-2019-0041817 (KR), filed on Apr. 10, 2019; application No. 10-2019-0047065 (KR), filed on Apr. 23, 2019; application No. 10-2019-0088346 (KR), filed on Jul. 22, 2019; application No. 10-2019-0095151 (KR), filed on Aug. 5, 2019; and application No. 10-2019-0096318 (KR), filed on Aug. 7, 2019.
Prior Publication US 2022/0014966 A1, Jan. 13, 2022
Int. Cl. H04W 28/06 (2009.01); H04W 12/037 (2021.01); H04L 69/04 (2022.01); H04L 69/22 (2022.01); H04L 9/06 (2006.01)
CPC H04W 28/06 (2013.01) [H04L 69/04 (2013.01); H04L 69/22 (2013.01); H04W 12/037 (2021.01); H04L 9/0618 (2013.01); H04L 2209/80 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of controlling a transmitter, the method comprising:
receiving a packet data convergence protocol (PDCP) service data unit (SDU) from an upper layer;
performing, by a PDCP layer, uplink data compression (UDC) on data of the PDCP SDU to generate a UDC block and a UDC header for the UDC block, based on the PDCP SDU including the data and a service data adaptation protocol (SDAP) header;
performing ciphering on the UDC header and the UDC block;
generating a PDCP header; and
transmitting a PDCP protocol data unit (PDU) including the PDCP header, the SDAP header, and the ciphered UDC header and UDC block to a lower layer,
wherein the SDAP header is positioned after the PDCP header, and
wherein the ciphered UDC header and UDC block are positioned after the SDAP header.