US Patent No. 10,602,563

METHOD AND APPARATUS FOR SUPPORTING RLC UM MODE OPERATION IN NEXT GENERATION MOBILE COMMUNICATION SYSTEM


Patent No. 10,602,563
Issue Date March 24, 2020
Title Method And Apparatus For Supporting Rlc Um Mode Operation In Next Generation Mobile Communication System
Inventorship Donggun Kim, Seoul (KR)
Soenghun Kim, Suwon-si (KR)
Sangbum Kim, Suwon-si (KR)
Assignee Samsung Electronics Co., Ltd., Suwon-si (KR)

Claim of US Patent No. 10,602,563

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.