US 12,273,769 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)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 22, 2023, as Appl. No. 18/394,878.
Application 18/394,878 is a continuation of application No. 17/294,045, granted, now 11,856,452, issued on Dec. 26, 2023, previously published as PCT/KR2019/018103, filed on Dec. 19, 2019.
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 2024/0129795 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 28/06 (2009.01); H04L 9/06 (2006.01); H04L 69/04 (2022.01); H04L 69/22 (2022.01); H04W 12/037 (2021.01)
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)] 14 Claims
OG exemplary drawing
 
1. A method performed by a transmitter, the method comprising:
receiving a packet data convergence protocol (PDCP) service data unit (SDU) from an upper layer;
in case that a service data adaptation protocol (SDAP) control protocol data unit (PDU) is included in the PDCP SDU, determining, by a PDCP layer, to not perform uplink data compression (UDC) and not perform ciphering on the SDAP control PDU;
in case that a SDAP data PDU is included in the PDCP SDU, performing, by the PDCP layer, UDC on the data of the PDCP SDU to generate a UDC block and a UDC header for the UDC block;
performing ciphering on the UDC header and the UDC block;
generating a PDCP header; and
submitting, to a lower layer, a PDCP protocol data unit (PDU) including the PDCP header, a SDAP header, and the ciphered UDC header and UDC block, based on the SDAP data PDU being included in the PDCP SDU,
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.