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 |
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.
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