System and method for providing voice service in a multimedia mobile network

A method for user equipment to establish a voice service, the method comprising:

• wherein the user equipment is operating in an Evolved Universal Mobile Telecommunications System Radio Access Network (eUTRAN) cell with one or more packet services but with no ongoing voice service;
• receiving a handover command for handover from the eUTRAN cell to a circuit switched cell;
• and
• performing circuit switched call establishment procedures after the user equipment has arrived in the circuit switched cell during a handover procedure.

A method for providing voice service to User Equipment (UE), the method comprising:

• wherein the UE is operating in a packet switched domain of an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (eUTRAN) cell with one or more packet services but with no ongoing voice service;
• generating a voice service requirement;
• determining a circuit switched cell;
• and
• establishing voice service between said UE and said circuit switched cell in a circuit switched domain based on the generating and the determining after the UE has arrived in the circuit switched cell during a handover procedure.

A network comprising:

• a plurality of circuit switched cells;
• an Evolved Packet System (EPS) comprising:
• a plurality of Evolved Universal Mobile Telecommunications System Terrestial Radio Access Network (eUTRAN) cells;
• and
• at least one Evolved Packet Core (EPC);
• wherein the EPC is configured to handover a User Equipment (UE) operating in at least one of said eUTRAN cells, wherein the UE is operating with one or more packet services but with no ongoing voice service to at least one of said plurality of circuit switched cells in response to a voice service requirement for the UE, such that the voice service can be established in a circuit switched domain of at least circuit switched cell among the plurality of circuit switched cells after the UE has arrived in the circuit switched cell during a handover procedure.

A method for an Evolved Packet Core to establish a voice service for a user equipment (UE), the method comprising:

• wherein the UE is operating in an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (eUTRAN) cell with one or more packet services but with no ongoing voice service;
• identifying a voice service requirement;
• and
• performing a handover from from the eUTRAN cell to a circuit switched cell, such that the voice service can be established in a circuit switched domain of the circuit switched cell after the user equipment has arrived in the circuit switched cell during a handover procedure.