US 11,751,272 B2
Method and apparatus for supporting RLC UM mode operation in next generation mobile communication system
Donggun Kim, Seoul (KR); Soenghun Kim, Suwon-si (KR); and Sangbum Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jan. 15, 2021, as Appl. No. 17/150,589.
Application 17/150,589 is a continuation of application No. 16/825,223, filed on Mar. 20, 2020, granted, now 11,265,952.
Application 16/825,223 is a continuation of application No. 16/003,743, filed on Jun. 8, 2018, granted, now 10,602,563, issued on Mar. 24, 2020.
Claims priority of application No. 10-2017-0072581 (KR), filed on Jun. 9, 2017; and application No. 10-2017-0079480 (KR), filed on Jun. 23, 2017.
Prior Publication US 2021/0144795 A1, May 13, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 76/20 (2018.01); H04L 69/22 (2022.01); H04L 47/34 (2022.01); H04W 28/06 (2009.01); H04L 47/36 (2022.01)
CPC H04W 76/20 (2018.02) [H04L 47/34 (2013.01); H04L 69/22 (2013.01); H04W 28/065 (2013.01); H04L 47/36 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of processing a radio link control (RLC) unacknowledged mode (UM) protocol data unit (PDU) based on an RLC UM service data unit (SDU) in a wireless communication system, the method comprising:
identifying whether the RLC UM PDU contains a segment of the RLC UM SDU or the RLC UM SDU without segmentation;
in case that the RLC UM PDU contains the RLC UM SDU without segmentation, determining not to include a sequence number (SN) field in a header of the RLC UM PDU containing the RLC UM SDU without segmentation;
in case that the RLC UM PDU contains the segment of the RLC UM SDU, setting an SN in a header of the RLC UM PDU to a variable value, wherein the variable value is for the RLC UM PDU and is increased when the RLC UM PDU contains a last segment of the RLC UM SDU;
identifying whether the RLC UM PDU contains the last segment of the RLC UM SDU; and
in case that the RLC UM PDU contains the last segment of the RLC UM SDU, increasing the variable value by one.