I am not sure whether my understanding is correct or not. As per my knowledge, UL-TFT at UE side takes care of IP packet to bearer mapping. I have seen many reference of LTE UE stack for user plane and found IP layer is just above the PDCP layer.
Packet filters are communicated to UE from the network using NAS signalling.
I just want to know where exactly/which layer is responsible to do bearer mapping at UE side.