CPC H04W 36/08 (2013.01) [H04W 36/0066 (2013.01); H04W 72/23 (2023.01); H04W 74/0833 (2013.01)] | 12 Claims |
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, by a medium access control (MAC) layer, from a radio link control (RLC) layer, a MAC service data unit (SDU) including an RLC header, a packet data convergence protocol (PDCP) header, and a PDCP payload;
receiving, by the MAC layer, from the RLC layer, information on an expiry of a timer corresponding to the MAC SDU;
in case that the MAC SDU is stored with a MAC subheader and the MAC SDU is considered expired based on the information, generating a MAC protocol data unit (PDU) by discarding the MAC subheader and the PDCP payload part from the MAC SDU, and updating the MAC subheader based on the PDCP header and the RLC header; and
transmitting, by the MAC layer, to a lower layer, the MAC PDU including the updated MAC subheader, the RLC header, and the PDCP header.
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