METHODS OF AND NODES FOR SELECTING A TARGET CORE NETWORK FOR HANDING OVER A VOICE SESSION OF A TERMINAL

摘要

A method of selecting a target core network (110) of a communication network (100) for handing over a voice session of a terminal (118) from a packet switched source radio access network (104) of the communication network (100) to a target radio access network of the communication network (100) is described. The voice session is anchored in an Internet Protocol Multimedia Subsystem of the communication network (100), and the selected target core network (110) comprises a circuit switched domain which is associated with the target radio access network and supports voice session continuity allowing to hand over the voice session from the packet switched source radio access network (104) to the target radio access network. The target radio access network is associated with a network identification of the target core network (110). The method is executed by a node (112) of the source radio access network (104). The method comprises receiving (126) a network identification of at least one target core network (110) associated with at least one target radio access network. The network identification indicates support for voice session continuity. The method comprises selecting (138) the target core network (110) based on the indicated support of voice session continuity indicated by the received network identification. Thus, a successful handover of the terminal (118) from the packet switched source radio access network (104) to the target radio access network employing voice session continuity may be accomplished.