Patent ID: 11895217
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An electronic device comprising:
at least one wireless communication circuit configured to provide a first radio access technology (RAT) and a second RAT;
a processor operatively connected to the at least one wireless communication circuit; and
a memory operatively connected to the processor, wherein the memory stores instructions, and the processor is configured to:
detect a packet data convergence protocol (PDCP) change from a first PDCP to a second PDCP at least by detecting a change in a PDCP version and/or in a PDCP key,
identify, in response to detected PDCP change, at least one first data packet that is delivered from a PDCP layer to a lower layer and has not been transmitted by the electronic device, and
when a transmission protocol of the at least one first data packet is a user datagram protocol, UDP, determine to reprocess the at least one first data packet by:
storing the at least one first data packet in a buffer,
changing at least a portion of the first data packet to at least one second data packet related to the second PDCP, and
transmitting the at least one second data packet.