Method and apparatus for transmitting a handover report and an RLF report

A method by a second base station in a second radio access technology (RAT), the method comprising:

• transmitting, to a first base station in a first RAT, a first message requesting an inter-RAT handover, the first message including location information and a cell identifier (ID) of a cell of the second base station;
• and
• receiving, from the first base station, based on the location information and the cell ID, a second message indicating that the inter-RAT handover is unnecessary if the inter-RAT handover is unnecessary,
• wherein the second message is transmitted from the first base station based on a result of measuring the second RAT while a terminal is connected to the first RAT.

A first base station in a first radio access technology (RAT), the first base station comprising:

• a transceiver for transmitting and receiving a signal;
• and
• a processor configured to control for:
• receiving, from a second base station in a second RAT, a first message requesting an inter-RAT handover, the first message including location information and a cell identifier (ID) of a cell of the second base station,
• instructing a terminal to measure the second RAT while being connected to the first RAT,
• identifying whether the inter-RAT handover is unnecessary based on a result of measuring the second RAT, and
• transmitting, to the second base station, based on the location information and the cell ID, a second message indicating that the inter-RAT handover is unnecessary if the inter-RAT handover is unnecessary.

A second base station in a second radio access technology (RAT), the second base station comprising:

• a transceiver for transmitting and receiving a signal;
• and
• a processor configured to control for:
• transmitting, to a first base station in a first RAT, a first message requesting an inter-radio access technology (RAT) handover, the first message including location information and a cell identifier (ID) of a cell of the second base station, and
• receiving, from the first base station, based on the location information and the cell ID, a second message indicating that the inter-RAT handover is unnecessary if the inter-RAT handover is unnecessary,
• wherein the second message is transmitted from the first base station based on a result of measuring the second RAT while a terminal is connected to the first RAT.