US 10,602,563 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, Gyeonggi-do (KR)
Filed on Jun. 8, 2018, as Appl. No. 16/3,743.
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 2018/0359801 A1, Dec. 13, 2018
Int. Cl. H04W 76/20 (2018.01); H04L 29/06 (2006.01); H04L 12/801 (2013.01); H04W 28/06 (2009.01); H04L 12/805 (2013.01)
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) by a transmitter in a wireless communication system, the method comprising:
identifying whether at least one RLC UM PDU contains a segment of an RLC UM SDU;
in case that the RLC UM SDU is segmented into a plurality of segments, setting a sequence number (SN) in a header of an RLC UM PDU of the at least one RLC UM PDU that contains a segment of the plurality of segments based on a variable value of the SN associated with the at least one RLC UM PDU;
identifying whether the segment that the RLC UM PDU contains maps to a last byte of the RLC UM SDU;
in case that the segment that the RLC UM PDU contains maps to the last byte of the RLC UM SDU, increasing the variable value of the SN associated with the at least one RLC UM PDU; and
in case that the RLC UM SDU is not segmented into the plurality of segments, determining not to set the SN in a header of a RLC UM PDU that contains the RLC UM SDU completely.