Apparatus and method for handover between a heterogeneous communication system and a broadband wireless communication system

A method for performing handover by a terminal in a source radio access network, the method comprising:

• transmitting, by the terminal, a measurement report including a measured signal quality, to a base station;
• receiving, by the terminal, radio-related information that is required if the terminal accesses a target radio access network, from the base station;
• and
• attempting, by the terminal, the handover from the source radio access network to the target radio access network using the radio-related information of the target radio access network received from the base station of the source radio access network,
• wherein the source radio access network receives radio-related information from the target radio access network and transmits the radio-related information to the base station of the source radio access network,
• wherein the handover between the source radio access network and the target radio access network comprises an inter radio access technology (RAT) handover.

A base station for performing a handover in a source radio access network, the base station comprising:

• a transceiver for transmitting and receiving a signal;
• and
• a controller configured to receive, from a terminal, measurement report including measured signal quality,
• to determine a handover initiation to a target radio access network, based on the measured signal quality,
• to transmit a handover request message to the target radio access network via a core network and
• to receive radio-related information that is required if the terminal accesses the target radio access network, from the target radio access network via the core network,
• wherein the controller transmits the radio-related information of the target radio access network, to the terminal,
• wherein the handover between the source radio access network and the target radio access network comprises an inter radio access technology (RAT) handover.

A terminal for performing a handover in a source radio access network, the terminal comprising:

• a transceiver for transmitting and receiving a signal;
• and
• a controller configured to transmit a measurement report including a measured signal quality to a base station,
• to receive radio-related information that is required if the terminal accesses the target radio access network, from the base station and
• to attempt the handover from a source radio access network to the target radio access network using the radio-related information of the target radio access network received from the base station of the first communication system,
• wherein the source radio access network receives the radio-related information from the target radio access network and transmits the radio-related information to the base station of the source radio access network,
• wherein the handover between the source radio access network and the target radio access network comprises an inter radio access technology (RAT) handover.