Abstract: In an embodiment, there is provided an architecture for the support of user plane transactions over a mobile network between an User Equipment UE and an IP network, said mobile network comprising at least one node, referred to as control plane node, supporting control plane transactions between said UE and said mobile network over control plane bearer, said architecture comprising: said UE and said control plane node adapted to support user plane transactions over said mobile network between said UE and said control plane node, over control plane bearer, said control plane node adapted to support user plane transactions over said mobile network between said control plane node and said IP network without need of user plane bearer in said mobile network, said control plane node interfacing, with or without IP tunneling, with a gateway function interfacing with said IP network.