FIELD: information technology.
SUBSTANCE: present serving base station commands the mobile communication device to measure neighbouring cells of a second communication network. The measurements are sent along with a handover request from the serving base station to a radio network controller of the second network, which decides the cell to which the call will be handed. A grant message including an identifier to be used by the mobile communication device and an identifier of the base station receiving the handover is transmitted back to the first network, and used by the mobile communication device in handing over the call.
EFFECT: improved call handover performed in a first communication network to a second network using a different wireless interface.
16 cl, 3 dwg
