IMPROVEMENTS IN AN EHSPA ARCHITECTURE

摘要

A telecommunications network, including an evolved base station node having a node controller and a first radio network controller (RNC), the node controller configured to communicate with user terminals, and the first radio network controller configured to communicate with a packet switched component of a core network, but not with a circuit switched component, may further include a second RNC that communicates with the node controller and also communicates with the packet switched component of the core network and a circuit switched component. A method of establishing communication between a user terminal and the core network via the second RNC, when the user terminal has a control plane connection with the evolved base station node, such that the first RNC is the serving RNC (SRNC), may include tunnelling communication set up messages over the control plane between the node controller and the core network via the second RNC.