User plane function (UPF) duplication based make before break handover

A method of handover in wireless communication for a user equipment (UE) comprising:

• transmitting, via a first radio or a second radio of the UE, a connection reconfiguration complete message to a target base station for completing a make before break handover of a user equipment (UE) from a source base station to a target base station;
• and
• for uplink transmissions, subsequent to transmitting the connection reconfiguration complete message,
• transmitting, via the first radio, a first packet data unit (PDU) to the source base station;
• transmitting, via the second radio, a second PDU to the target base station,
• wherein the first PDU and the second PDU have a same sequence number (SN);
• and
• for downlink transmissions, subsequent to transmitting the connection reconfiguration complete message,
• receiving, via the first radio, one or more PDUs from the source base station, each received PDU having at least one corresponding SN;
• receiving, via the second radio, one or more PDUs from the target base station, each received PDU having at least one corresponding SN;
• deciphering the received one or more PDUs from the source base station and the target base station respectively and storing the received one or more PDUs in a buffer;
• discarding duplicative PDUs in the buffer based on the at least one corresponding SN for each received PDU;
• and
• re-ordering remaining PDUs based on the at least one corresponding SN.