Method and apparatus for avoiding packet fragmentation in mobile communications

An apparatus, comprising:

• a transceiver capable of wirelessly communicating with a plurality of nodes of a wireless network;
• and
• a processor communicatively coupled to the transceiver, the processor capable of:
• determining a first maximum transmission unit (MTU) configuration of a session via a first network interface;
• determining a second MTU configuration of the session via a second network interface;
• determining a tunnel overhead size between the second network interface and the first network interface;
• selecting a transport protocol to generate a packet according to the second MTU configuration and the tunnel overhead size;
• and
• transmitting, via the transceiver, the packet via the first network interface and the second network interface sequentially,
• wherein the first network interface is associated with a first radio access technology and the second network interface is associated with a second radio access technology different from the first radio access technology.