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

Claim 2:
3. A data transmission method of an electronic device, comprising:
detecting a packet data convergence protocol (PDCP) change from a first PDCP to a second PDCP by detecting a change in a PDCP version or in a PDCP key,
identifying, in response to the 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;
when a transmission protocol of the at least one first data packet is a user datagram protocol, UDP, determining to reprocess the at least one first data packet; and
reprocessing the at least one first data packet by storing the at least one first data packet in a buffer, changing at least 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.